Attachment A-Test Support Assumptions.pdf

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Attachment A - Test Support Assumptions For Self- Propelled Howitzer

Performance Evaluation Draft

Product Manager Self-Propelled Howitzer-Modernization

DISTRIBUTION STATEMENT A. Approved for public release: distribution unlimited.

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Table of Contents

1. Introduction

1.1. Summary

1.2. Test Objectives

1.3. Materials for Testing

2. Test Description

2.1. Phase 1 – Acceptance and Initial Inspections

2.2. Phase 2 – System Overview and Operations

2.3. Phase 3 – Physical Characteristics and Human Factors Evaluation

2.4. Phase 4 – Non-Firing Test

2.5. Phase 5 – Firing Test

2.6. Phase 6 – PM CAS Limited Ammunition Qualification Testing

2.7. Phase 7 – Mobility

2.8. Phase 8 – Soldier Touch Point

2.9. Phase 9 – Post Test Inspections

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1. Introduction

1.1. Summary

Background: Product Manager Self-Propelled Howitzer-Modernization (PdM SPH-M) needs to deliver a superior armored howitzer system. This evaluation is planned to result in a subsequent Request for Proposal (RFP) for a production contract award if a suitable and operationally acceptable solution is identified.

Program Description: Division Artillery requires significant and organic fire support capability with high levels of mobility, protection, rate of fire, and sustainment necessary to deliver dominant long range, massed and precision fires. The requirement is for vendors to participate, with their non-developmental self-propelled howitzer system of systems, in an Evaluation Test Event at Yuma Proving Ground (YPG), Arizona in FY26. The self-propelled howitzer system of systems should include but is not limited to 155 mm self-propelled artillery vehicle (wheeled or tracked), to include ammunition, resupply system (if available), special tools, and similar components as required to demonstrate the capability during test.

This is not a formal government test plan. These are assumptions to be used for planning purposes.

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1.2. Test Objectives

Test Phase Title Objective

Acceptance & Initial

Inspections (Duration: 10 days)

• Complete necessary maintenance/inspections and checkouts per vendor requirements to ensure system is fully operational before testing begins.

• Conduct gun tube inspections to ensure tube is in a safe serviceable state and establish a baseline condition.

• Install Basic Issue Items (BII), Components of End Item (COEI), Authorized Stockage List (ASL) (or vendor equivalent) to bring system to combat equipment loadout configuration.

• Install necessary test site instrumentation.

• Complete fire control alignment test (FCAT) on weapon system.

System Overview and Operations

Demonstration (Duration: 3 days)

• Vendor to provide overview/walkthrough of system.

• Vendor to provide/demonstrate system operations to test site crew

• Test site crew validate letter of instruction to safely operate system at test site.

Physical Characteristics/Human

Factors Evaluation (Duration: 10 days)

• Obtain system physical characteristics measurements (2 days).

• Obtain ammunition payload quantities and upload timing for Self-Propelled Howitzer (SPH), Resupply Vehicle (RSV), and resupply of SPH from RSV (3 days).

• Obtain human factors evaluation data (5 days).

4 Non-Firing Testing (Duration 30 days)

• Pointing accuracy (1 day): Evaluate SPH ability to accurately place gun tube (Quadrant Elevation (QE) & Azimuth) in commanded position.

• Fire Control Evaluation (1 day): Allow USG to evaluate fire control system operations and architecture.

• Cyber Test (5 days): Evaluate system cyber hardness (Cyber security vulnerability penetration assessment).

• Direct Fire Engagement (1 day): Evaluate system ability to execute direct fire missions.

• SPH Operation on Longitudinal Grades and Side Slopes (1 day): Evaluate the system ability to operate on graded and sloped terrains.

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• Ammunition resupply from RSV to SPH on various terrains (2 days): Evaluate system ability to conduct resupply on graded and sloped terrain.

• RSV Climatic Chamber Test (15 days): Evaluate RSV performance in hot/cold climatic conditions

5 Test Firing (Duration: 87 days)

• Accuracy and Range (20 days): Evaluate accuracy/precision of weapon system and accuracy at or near the maximum achievable range based on vendor provided ammunition.

• Limited Blast Over Pressure (10 days): Evaluate effects of the muzzle blast at crew locations with top zone propelling charge at varying quadrant elevations.

• Limited Toxic Fumes (10 days): Evaluate the effects of toxic fumes at crew locations while firing top zone propelling charges.

• Reliability, Availability, and Maintainability(RAM)/ Operational Mode Summary/Mission Profile (OMSMP) (20 days): Evaluate system performance and reliability while executing a USG PdM SPH-M defined OMSMP scenario.

• Mission Cycle Time (5 days): Evaluate system performance and ability to complete a USG PdM SPH-M defined operational scenario.

• Rate of Fire (2 days): Evaluate systems maximum achievable rate of fire with vendor provided ammunition components.

• SPH climatic chamber test (20 days): Evaluate SPH performance in hot/cold climatic conditions.

US Ammunition Compatibility (Optional

Test) (Duration: 5 days)

• Projectile Ram and Extract (5 days): Evaluate the systems projectile rammer performance with US projectiles.

• Compatibility Firing Test: Limited evaluation of system compatibility by firing current fielded US ammunition components.

PM CAS Limited Ammunition

Qualification Test (Duration: To Be

Determined (TBD))

• TBD

8 Mobility/Transportability (Duration: 29 days)

• Mobility o Max speed and acceleration (4 days):

Evaluate system maximum achievable speed and acceleration.

o Drawbar Pull (4 days): Evaluate system performance under load.

UNCLASSIFIED Page 6 of 32 o Limited Fuel Consumption (5 days):

Evaluate system fuel consumption under various conditions.

o Gradeability and Side Slopes (3 days):

Evaluate system ability to traverse vertical and side sloped and graded surfaces.

o Standard Obstacles (2 days): Evaluate system performance to traverse various obstacles (steps & trench).

o Towing (2 days): Evaluate system ability to tow or be towed by similar vehicle.

Determine compatibility with US Army towing provisions.

o Sand Grades (2 days): Evaluate system ability to traverse soft sand vertical graded slopes.

o Mud Course (2 days): Evaluate system ability to traverse muddy terrain.

• Transportability o Lifting and Tie Down (5 days): Evaluate performance of system lifting and tie provisions.

Soldier Touch Point/Operational

Demonstration (Duration: 5 days)

• Allow US soldiers hands-on time with system to evaluate system user operations and crew drill.

10 Post Test Inspections (Duration: 10 days)

• Determine the need for any unscheduled maintenance.

• Conduct scheduled maintenance and inspections after testing is completed.

• Conduct gun tube inspections to evaluate the post-test condition of gun tube.

• Prepare vehicle for shipment back to vendor site.

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1.3. Materials for Testing

Vendor Supplied Equipment

• 1 ea. SPH Vehicle

• 1 ea. RSV *Vendor provided RSV for testing is optional*

• 2 ea. Gun Tube

• Inert Ammunition (full payload set for SPH and RSV) o QTY: TBD

• Necessary equipment for SPH and RSV to be at combat configuration (US equivalent:

BII, COEI, ASL)

• Tools/specialty equipment for system maintenance

• Spare parts as needed

• Remote firing setup equipment

• Operator/Maintenance and Parts Technical Manual’s

Test Center Supplied Equipment/Facilities

• Maintenance Facility o Mechanic support (oversight only) o Overhead crane support

• Storage area for vendor equipment o Preferably covered storage for weapon system and resupply vehicle/platform o Space in maintenance bay to store tools/equipment o Outdoor space for equipment storage/Conex boxes

• Gun Position/Impact Areas o Standard Gun Position o SPH Operational Area o Impact areas with ability to collect impact data

• Mobility Courses o Paved Surface o Cross Country Terrian Course o Hills Terrian Course o Longitudinal Sand Grades o Longitudinal Grades o Side Slopes o Standard Obstacles (Step & Trench) o Mud Course

• Conditioning Chambers

• Lift and Tie Down Test Facility

Vendor Supplied Ammunition

• Fuze: TBD

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• Projectiles: TBD

• Propellant Charges: TBD

• Primers: TBD

US Government Supplied Ammunition (Dependent on US ammo compatibility)

• Fuze o Fuze: TBD

• Projectiles o Projectile: TBD

• Propelling Charges o Propelling charge: TBD

• Primer o Primer: TBD

Test Center Supplied Instrumentation

• Muzzle velocity radars

• Blast overpressure data collection equipment

• Tracking Radar

• Toxic fumes data collection equipment

• Pressure Transducers (for ported gun tube)

• Video Cameras o Wireless capability required for remote viewing of “crew operations” during test firing.

Required Views

• Fire Control Screen.

• Crew Compartment/Cab Interior (if applicable).

• Exterior front forward facing view (during mobility operations).

o Static cameras emplaced at gun position during testing Required Views

• Exterior full vehicle side view.

• Exterior overall rear 45 deg. view.

• GPS crash box (Position Navigation Time)

• Speed wheel

• Drawbar test equipment

• Load Cells

Reference Documents

• Operator manual (SPH & RSV): Vendor provided

• Maintenance manual (SPH & RSV): Vendor provided

• Parts Manual (SPH & RSV): Vendor provided

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• Firing Tables: Vendor provided

• Safety Assessment Report (SAR): Vendor provided

• Letter of Instruction (LOI): Test site provided

• Test Operations Procedure (TOP)and International Test Operations Procedure (ITOP)

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2. Test Description

2.1. Phase 1 – Acceptance & Initial Inspections

2.1.1. Initial Inspections

2.1.1.1. Required Vendor Personnel

• System Subject Matter Expert (SPH & RSV)

• System Operators (SPH & RSV)

• System Mechanics

2.1.1.2. Description

2.1.1.2.1. Vendor personnel with assistance from test site maintenance personnel will conduct post shipment of both SPH and RSV to ensure no damage to either system occurred shipment. Inspections will consist of both visual and system checkouts. Any deficiencies found will be documented and photographed if applicable by test site data collectors.

Vendor will also inspect any equipment that was shipped to test site to ensure all required equipment was received and is on-hand. Test site data collectors will also take photographs of both the SPH and RSV to include the following views: front, rear, and overall side view of both left and right sides. Test site data collectors will document the following information:

SPH & RSV S/N, Breech S/N, Gun Tube S/N, Muzzle Brake S/N, SPH & RSV current odometer reading, SPH & RSV current engine hours, Gun Tube round count, Gun Tube Equivalent Full Charge’s (EFC), Breech total round count, Breech EFC, SPH total round count, SPH total EFC’s.

2.1.1.3. Data Output

• Test Incident Reports (TIRs) documenting inspection results, and any deficiencies found

• Photos systems and any issues found during inspections

• System Serial Numbers (S/N), Round Counts, and EFC’s.

2.1.2. Maintenance

2.1.2.1. Required Vendor Personnel

• System Subject Matter Expert (SPH & RSV)

• System Operators (SPH & RSV)

• System Mechanics

2.1.2.2. Description

2.1.2.2.1. Vendor personnel with assistance from test site maintenance personnel will complete any necessary scheduled maintenance (e.g.:

Preventive Maintenance Checks and Service (PMCS), weekly, monthly, etc.)

on both the SPH and RSV per vendor maintenance requirements. If any deficiencies are found during inspections the vendor will execute corrective actions/unscheduled maintenance during this time. All maintenance operations conducted will be documented and time stamped by test site data collectors.

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2.1.2.3. Data Output

• TIR’s documenting maintenance types/results and time stamps for each maintenance event

• Photographs of maintenance activities as applicable

2.1.3. Cannon Tube Inspections

2.1.3.1. Required Vendor Personnel

• System Subject Matter Expert (SPH & RSV)

• System Operators (SPH & RSV)

• System Mechanics

2.1.3.2. Description

2.1.3.2.1. Vendor personnel with assistance from test site maintenance personnel will remove cannon tube from SPH along with the muzzle brake, in preparation for inspections. If necessary, vendor personnel will clean cannon tube. Test site inspection personnel will conduct the following inspections of cannon tube to establish a pre-test baseline condition:

magnetic particle inspection, laser bore map, borescope, pull-over, and star gauge. Test site inspection personnel will also conduct an MPI on the muzzle brake. After inspections are completed, vendor personnel with assistance from test site maintenance personnel will re-install the cannon tube into the SPH along with the muzzle brake. Vendor personnel will complete any necessary post cannon tube installation maintenance or checkouts. Test site data collectors will document tube removal/installation procedures along with timestamping the event.

2.1.3.3. Data Output

• Cannon tube baseline inspection reports.

• TIR’s documenting cannon tube removal/installation process with time stamps.

• Photographs of cannon tube removal/installation process as necessary.

2.1.4. Vehicle Preparation/Checkout

2.1.4.1. Required Vendor Personnel

• System Subject Matter Expert (SPH & RSV)

• System Operators (SPH & RSV)

• System Mechanics

2.1.4.2. Description

2.1.4.2.1. Vendor personnel will prepare both the SPH and RSV to enter active testing. Vendor personnel will install any components of end item, basic issue items, any other necessary equipment onto SPH and RSV to simulate a combat equipment configuration loadout. Test site data collectors will document any items/equipment that installed and take photos of the installed equipment.

2.1.4.2.2. Test site instrumentation personnel will install remote viewing capable cameras onto SPH with the following views: crew compartment, fire control screen, and forward-facing exterior view. Test site

UNCLASSIFIED Page 12 of 32 instrumentation personnel will install a GPS crashbox on both the SPH and RSV. Test site data collectors will take photos of the installed cameras and crashbox.

2.1.4.2.3. Vendor personnel with the assistance of test site gun crew personnel will conduct a fire control alignment test on the weapon system per vendor system requirements/procedures. Test site data collectors will document the fire control alignment process in TIR’s and record any offsets that are input into the fire control system.

2.1.4.2.4. Vendor personnel will conduct system checkouts by completing a minimum five dry run fire missions to verify weapon system functionality.

Vendor personnel will also conduct function checks on all sub-systems including a short test drive. Test site data collectors will document the checkout types and procedures along with any issues observed.

2.1.4.3. Data Output

• TIR’s documenting system combat configuration equipment, test site installed instrumentation, fire control alignment process, system checkout process and results.

• Photographs of installed system combat configuration equipment and test site installed instrumentation.

2.2. Phase 2 – System Overview and Operations Demonstration

2.2.1. System Overview

2.2.1.1. Required Vendor Personnel

• System Subject Matter Expert (SPH & RSV)

• System Operators (SPH & RSV)

2.2.1.2. Description

2.2.1.2.1. Vendor personnel will provide a system overview of both the SPH and RSV vehicles to the test site crew. The overview will consist of vendor personnel explaining system features, identifying major system components, identifying system control surfaces/operator interfaces, and an explanation of system operations.

2.2.1.3. Data Output

• Test site crew will gain a basic understanding of the overall SPH and RSV systems.

2.2.2. System Operation Walkthrough/Test Site LOI Validation

2.2.2.1. Required Vendor Personnel

• System Subject Matter Expert (SPH & RSV)

• Full System Operator Crew (SPH & RSV)

2.2.2.2. Description

2.2.2.2.1. Vendor personnel will demonstrate system operations for both the

SPH and RSV to test site crew. Vendor personnel will execute live operations on both systems to include the following: PMCS, power up and

UNCLASSIFIED Page 13 of 32 initialization, driving operations, SPH weapon operations, SPH dry fire missions, RSV re-supply system operations, system power down, and any typical troubleshooting/fault clearing procedures. During this time the test site crew will also compare their LOI procedures to the demonstrated procedures to ensure the LOI is correct. Vendor personnel will also review the LOI with test site personnel to ensure all operational procedures are captured and correct.

2.2.2.3. Data Output

• Test site crew will gain basic understanding of system operations for both SPH and RSV.

• Test site crew will validate their LOI procedures.

2.3. Phase 3 – Physical Characteristics/Human Factors Evaluation

2.3.1. Physical Characteristics

2.3.1.1. SPH/RSV system measurements

2.3.1.1.1. Required Vendor Personnel

• System Subject Matter Expert (SPH & RSV)

• System Operators (SPH & RSV)

2.3.1.1.2. Description

2.3.1.1.2.1. Test site mass properties personnel will measure and record the following physical characteristics on both the SPH and RSV with a full combat payload:

• Overall system length

• Overall system width

• Overall system height

• Cannon tube tip to ground (if applicable)

• Total system weight

• Angle of approach

• Angle of departure

• Ground clearance

• Ground pressure (tire or track as applicable)

• Axel/Road wheel spacing

• Towing/Tiedown provision locations

• SPH weapon system traverse limits (left and right)

• SPH weapon system elevation limits (min and max)

2.3.1.1.2.2. Test site mass properties and data collectors’ personnel will also take photos of the measure locations and measurement method setup.

2.3.1.1.3. Data Output

• SPH and RSV vehicle physical measurements

• Photos of measurement locations and measurement method setup.

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2.3.1.2. Timed SPH Ammunition Payload

2.3.1.2.1. Require Vendor Personnel

• System Subject Matter Expert (SPH)

• Full System Operator Crew (SPH)

2.3.1.2.2. Description

2.3.1.2.2.1. Vendor personnel will execute a full ammunition upload in the SPH. The SPH will be parked on a flat level surface with inert ammunition components staged by the vehicle in its normal shipment packaging configuration. Ammunition payload will include at least three simulated precision projectiles. Test site data collectors will take photos of the staged inert ammunition. The vendor SPH crew will start the ammunition upload at the command of the test site crew. Test site data collector personnel will record the time required for the crew to complete the full ammunition upload and document the quantities, types, and locations of the uploaded ammunition. Test site data collector personnel will document the storage configuration of the ammunition components in the SPH and take photos as necessary.

2.3.1.2.3. Data Output

• SPH ammunition payload quantities, types, locations, configuration.

• Photos of uploaded ammunition in SPH.

• Time needed execute a full ammunition upload in SPH.

• Average per round time to load.

2.3.1.3. Timed RSV Ammunition Payload

2.3.1.3.1. Required Vendor Personnel

• System Subject Matter Expert (RSV)

• Full System Operator Crew (RSV)

2.3.1.3.2. Description

2.3.1.3.2.1. Vendor personnel will execute a full ammunition upload in the RSV. The RSV will be parked on a flat level surface with inert ammunition components staged by the vehicle in its normal shipment packaging configuration. Ammunition payload will include at least six simulated precision projectiles. Test site data collectors will take photos of the staged inert ammunition. The vendor RSV crew will start the ammunition upload at the command of the test site crew. Test site data collector personnel will record the time required for the crew to complete the full ammunition upload and document the quantities, types, and locations of the uploaded ammunition. Test site data collector personnel will document the storage configuration of the ammunition components in the RSV and take photos as necessary.

2.3.1.3.3. Data Output

• RSV ammunition payload quantities, types, locations, configuration.

• Photos of uploaded ammunition in RSV.

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• Time needed execute a full ammunition upload in RSV.

2.3.1.4. Timed RSV to SPH Ammunition Full Ammunition Resupply

2.3.1.4.1. Required Vendor Personnel

• System Subject Matter Expert (SPH & RSV)

• Full System Operator Crew (SPH & RSV)

2.3.1.4.2. Description

2.3.1.4.2.1. Vendor personnel will execute a full ammunition resupply to the SPH from the RSV. The SPH and RSV will be parked on a flat level surface. The RSV will have a full ammunition payload already uploaded into the system from the previous RSV ammunition upload event and the SPH will have no ammunition onboard. The position of the RSV relative to the SPH will be dictated by vendor requirements for the resupply process. Test site data collector personnel will take photos of the resupply process overall setup. Vendor SPH and RSV crew will start ammunition resupply at the command of the test site crew. The vendor crew will complete the full resupply process per their operation manuals. Test site data collector personnel will record the time required for the crew to complete the full ammunition resupply and document the process for the resupply event along with the types and quantities of ammunition components uploaded into the SPH.

2.3.1.4.3. Data Output

• Ammunition resupply quantities, types, locations, configuration.

• Photos of resupply process setup.

• Document resupply process procedures.

• Time needed execute a full ammunition resupply from RSV to SPH.

2.3.2. Human Factors Evaluation

2.3.2.1. Require Vendor Personnel

• System Subject Matter Expert (SPH & RSV)

• System Operators (SPH & RSV)

2.3.2.2. Description

2.3.2.2.1. USG personnel will capture human factors evaluation data on both the SPH and RSV. Vendor personnel will assist as necessary to allow for the collection of the data such opening hatches/doors or operating the systems.

2.3.2.3. Data Output

• Human factors evaluation data on both SPH and RSV.

2.4. Phase 4 – Non-Firing Testing

2.4.1. Pointing Accuracy

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2.4.1.1. Required Vendor Personnel

• System Subject Matter Expert (SPH)

• System Operators (SPH)

2.4.1.2. Description

2.4.1.2.1. Vendor personnel will operate weapon system to demonstrate the systems cannon tube pointing accuracy. Vendor personnel will input pre-determined cannon tube position parameters, Quadrant Elevation (QE) & Azimuth of Fire (AoF) into the weapon systems onboard fire control computer. Vendor personnel will then command fire control system to move the cannon tube to the inputted position parameters. Test site personnel will then measure and record the actual tube position using a calibrated gunners quadrant and theodolite instrument to determine the QE and AoF, any breech corrections or offsets will accounted for. The recorded tube position data will then be compared to the position data displayed on the fire control system. Multiple iterations with varying cannon tube position parameters will be completed.

2.4.1.3. Data Output

• Actual cannon tube position vs the fire control systems position readout.

2.4.2. Fire Control Evaluation

2.4.2.1. Required Vendor Personnel

• System Subject Matter Expert (SPH)

• Fire Control System Subject Matter Expert

• System Operators (SPH)

2.4.2.2. Description

2.4.2.2.1. USG fire control team will be allowed on-vehicle time to evaluate the

SPH fire control system architecture and theory of operation. Vendor personnel will be on-site to provided explanations to any questions the USG team has about the overall fire control system and its operations. Vendor personnel will also provide demonstrations of the systems fire control operations as necessary. Test site data collectors will take photos of the fire control screen/hardware as necessary.

2.4.2.3. Data Output

• USG fire control team to gain an understanding the systems fire control architecture and theory of operation.

• Photos of fire control system as necessary.

2.4.3. Cyber Test

2.4.3.1. Required Vendor Personnel

2.4.3.1.1. System Subject Matter Expert

2.4.3.1.2. Fire Control System Subject Matter Expert

2.4.3.1.3. System Software Subject Matter Expert

2.4.3.1.4. System Operators

2.4.3.2. Description

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2.4.3.2.1. USG personnel will conduct a cooperative vulnerability penetration assessment on SPH. Vendor personnel will be on-site to provide system technical information and conduct any system operations as necessary.

2.4.3.3. Data Output

• Results of limited cyber penetration testing.

2.4.4. Direct Fire Engagement (If applicable)

2.4.4.1. Required Vendor Personnel

• System Subject Matter Expert (SPH)

• Full System Operator Crew (SPH)

2.4.4.2. Description

2.4.4.2.1. Vendor personnel will emplace the SPH at a test site designated location. Vendor personnel will complete any required pre-operation maintenance (PMCS or pre-fire checks) to prepare the system for operations. At the direction of test site, vendor personnel will conduct a dry run fire mission with the system in a direct fire configuration per vendor system operation requirements. Any traverse or elevation limits of the system in a dire fire configuration will be documented. Test site data collectors will document the time required to prepare the system for a dire fire mission along the time of the overall event. Multiple iterations of a direct fire mission will be completed at traverse angles to include off the right and left side of the chassis along with front and rear center line of chassis as applicable.

2.4.4.3. Data Output

• Documented procedures for conducting a direct fire mission.

• Time needed to prepare system for a direct fire mission.

• Photos of the weapon system in a direct fire configuration.

• TIR’s documenting any observed issues.

2.4.5. RSV Climatic Chamber Test

2.4.5.1. Required Vendor Personnel

• System Subject Matter Expert (RSV)

• Full System Operator Crew (RSV)

• System Maintainers/Mechanics

2.4.5.2. Description

2.4.5.2.1. The RSV will under climatic chamber testing in both hot (120 deg. F) and cold (-25 deg. F) conditions. Vendor personnel will conduct any pre-test maintenance on the RSV such as fluid/lubricant change out and installation of weather kits to prepare the RSV for the respective climatic conditions.

Vendor personnel will emplace the RSV in test site climatic chamber and the chamber/system will be temperature conditioned to respective climatic conditions. Once the desired climatic conditions are reached the system will undergo operational function checks to include system power up, sub-system function checks, and ammunition resupply system function checks.

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Vendor personnel will complete any pre-operation system maintenance (PMCS) before operational function checks are conducted. At the direction of test site, vendor personnel will conduct operational function checks while the system is in the chamber at the desired climatic conditions.

Multiple iterations of operational function checks will be completed on separate days with chamber at the desired climatic conditions.

2.4.5.3. Data Output

• Record of chamber climatic conditions throughout testing

• Documented maintenance required to prepare the system for respective climatic conditions.

• Results of operational function checks at the respective climatic conditions.

2.4.6. SPH Operation on Longitudinal Grades and Side Slopes

2.4.6.1. Required Vendor Personnel

• System Subject Matter Expert (SPH)

• Full System Operator Crew (SPH)

2.4.6.2. Description

2.4.6.2.1. The SPH will demonstrate the ability to operate on longitudinal grades and side sloped terrains. Under direction from test site, vendor personnel will position the SPH on a longitudinal graded surface. Vendor personnel will then execute 5 dry run fire missions using various mission parameters (AoF and QE). The SPH will conduct the same operations on a side sloped surface. The maximum percent of the grade of which the systems will positioned for the demonstration will be determined by the vendor system operation requirements.

2.4.6.3. Data Output

• Percent grade of surface operations took place on.

• Dry run fire mission parameters

• Video data of operations

• Photos of test setup

• TIR documenting any observed issues.

2.4.7. Ammunition Re-supply RSV to SPH on Longitudinal Grades and Side Slopes

2.4.7.1. Required Vendor Personnel

• System Subject Matter Expert (SPH & RSV)

• Full System Operator Crew (SPH & RSV)

2.4.7.2. Description

2.4.7.2.1. A limited ammunition resupply of the SPH from the RSV will be demonstrated on both a longitudinal graded surface and side sloped surface. The maximum percent of the grade at which the systems will positioned for the demonstration will be determined by the vendor system operation requirements. The SPH will have no ammunition components onboard, and the RSV will by payload with pre-determined quantities of

UNCLASSIFIED Page 19 of 32 ammunition components. Vendor personnel will complete any necessary pre-operation maintenance (PMCS). Under test site direction, Vendor personnel will then operate the SPH and RSV to position them on the respective graded/sloped surface in a resupply configuration. Under test site direction vendor personnel will conduct a limited ammunition resupply from the RSV to SPH.

2.4.7.3. Data Output

• Percent grade of surface resupply operation took place.

• Types and quantities of ammunition components used in resupply operation.

• Photos of overall resupply operation setup.

2.5. Phase 5 – Test Fring

2.5.1. Accuracy and Range

2.5.1.1. Required Vendor Personnel

• System Subject Matter Expert (SPH)

• Full System Operator Crew (SPH)

2.5.1.2. Description

2.5.1.2.1. The SPH will undergo precision/accuracy testing which consists of firing conventional, near precision, and precision ammunition at various target ranges. The target grid for each range will be pre-determined and given to the vendor to input into the weapon fire control system. The weapon fire control system will calculate the fire mission parameters to include weapon setting (QE & AoF) and propelling charge zone. Testing will be fired one round at a time, timing between shots will be at test site personnel discretion. Vendor personnel will conduct any pre-operation/pre-fire maintenance on the system and emplace it at a test site designated gun position. Under the direction of test site, vendor personnel will load and fire the weapon using remote fire operations. Target ranges, ammunition types, and quantities are given below.

o Conventional Ammunition (32 rounds per range, 160 total) Ranges: 4km, 9km, 21km, 80% of max range, Max range o Near Precision Ammunition (32 rounds per range, 64 total)

Ranges: 27km and Max range o Precision Ammunition (3 rounds per range, 6 total)

Ranges: Minimum acceptable range for given ammunition and Max range

2.5.1.3. Data Output

• Impact location data

• Muzzle velocities

• Record of test firing completed to include fire mission parameters.

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• Video recording of testing

• Hourly meteorological data up to 2km about projectile max ordinate during testing firing.

2.5.2. Limited Blast Overpressure

2.5.2.1. Required Vendor Personnel

• System Subject Matter Expert (SPH)

• Full System Operator Crew (SPH)

2.5.2.2. Description

2.5.2.2.1. The SPH will undergo limited blast overpressure testing which consists of main armament firing with blast overpressure detection instrumentation installed on the SPH. Test firing will be limited to the use of top zone propelling charge. Test site personnel will install blast overpressure detection instrumentation at the vendor designated crew locations for the SPH. Fire mission parameters will be pre-determined and given to vendor personnel to input into the weapon fire control system. Test firing will be completed one round at a time, timing between shots will be at test site personnel discretion. Vendor personnel will conduct any pre-operation/pre-fire maintenance on the system and emplace it at a test site designated gun position. Vendor personnel will load the weapon under the direction of test site. If applicable the crew compartment hatches will be closed/sealed once the weapon is loaded. Under the direction of test site, vendor personnel will fire the weapon using remote fire operations.

2.5.2.3. Data Output

• Blast over pressure data at crew locations.

• Record of test firing completed to include fire mission parameters.

• Video recording of testing

• Surface meteorological conditions at gun position.

2.5.3. Limited Toxic Fumes

2.5.3.1. Required Vendor Personnel

• System Subject Matter Expert (SPH)

• Full System Operator Crew (SPH)

• System Mechanics

2.5.3.2. Description

2.5.3.2.1. Man-Fire Inspections: Before onboard firing is permitted at the test site the cannon system must undergo a magnetic particle inspection per test center requirements. At minimum the cannon tube, breech ring, and breech block must under the inspection. Vendor personnel will disassemble and clean the cannon system components that require inspection. Test site inspection personnel will conduct a magnetic particle inspection on each component to ensure the components are free of

UNCLASSIFIED Page 21 of 32 cracks/damage and confirm they are safe for onboard firing operations.

After inspections are completed vendor personnel will reassemble the cannon system. Vendor personnel will conduct any required post cannon system assembly maintenance and complete system checkout by executing function checks and dry run fire missions. Before any onboard firing operations occur after a major weapon reassembly, a minimum of three remote fired checkout rounds will be fired.

2.5.3.2.2. The SPH will undergo limited toxic fumes testing which consists of main armament firing with toxic fume collection equipment installed on the SPH. Test firing will be limited to the use of top zone propelling charge. Test site personnel will install toxic fume collection equipment at the vendor designated crew locations for the SPH. Fire mission parameters will be pre-determined and given to vendor personnel to input into the weapon fire control system. Vendor personnel will conduct any pre-operation/pre-fire maintenance on the system and emplace it at a test site designate gun position. Vendor personnel will upload the necessary ammunition into the SPH. Under the direction of test site, vendor personnel will fire the weapon using onboard operations. If applicable the crew compartment hatches will be closed/sealed and ventilation systems turned on while firing in accordance with system the operation manual. Once the data collection is complete the vendor crew will exit the crew compartment at the direction of test site personnel.

2.5.3.3. Data Output

• Toxic fume levels at the crew locations

• Record of test firing completed to include fire mission parameters.

• Video recording of testing

• Surface meteorological conditions at gun position.

2.5.4. RAM/OMSMP

2.5.4.1. Required Vendor Personnel

• System Subject Matter Expert (SPH & RSV)

• Full System Operator Crew (SPH & RSV)

2.5.4.2. Description

2.5.4.2.1. The SPH and RSV will undergo limited RAM testing which includes firing and mobility operations. The testing will we be based on a USG PdM SPH-M determined operational mode summary and mission profile. The SPH will conduct multiple fire mission at various target ranges along with conducting simulated survivability moves accompanied by the RSV. Vendor personnel will conduct any pre-operation/pre-fire maintenance on the systems and emplace them at a test site designated gun position. Test site will provide target grids to vendor personnel, and they will input the data into the weapon fire control system allowing the fire control to calculate the fire mission parameters. Vendor personnel will then execute the fire

UNCLASSIFIED Page 22 of 32 mission after given clearance by test site personnel. Vendor personnel will also execute vehicle movement missions as directed by test site personnel.

Vehicle movement mission will be completed on pre-determined routes near the gun position. Remote fire operations will be used to conduct this test.

2.5.4.3. Data Output

• Record of test firing completed to include fire mission parameters.

• Record of vehicle movement missions completed.

• Video recording of testing.

2.5.5. Mission Cycle Time

2.5.5.1. Required Vendor Personnel

• System Subject Matter Expert (SPH & RSV)

• Full System Operator Crew (SPH & RSV)

2.5.5.2. Description

2.5.5.2.1. Man-Fire Inspections: Before onboard firing is permitted at the test site the cannon system must undergo a magnetic particle inspection per test center requirements. At minimum the cannon tube, breech ring, and breech block must under the inspection. Vendor personnel will disassemble and clean the cannon system components that require inspection. Test site personnel will conduct a magnetic particle inspection on each component to ensure the components are free of cracks/damage and confirm they are safe for onboard firing operations. After inspections are completed vendor personnel will reassemble the cannon system.

Vendor personnel will conduct any required post cannon system assembly maintenance and complete system checkout by executing function checks and dry run fire missions. Before any onboard firing operations occur after a major weapon reassembly, a minimum of three remote fired checkout rounds will be fired.

2.5.5.2.2. The SPH and RSV will complete a simulated operational scenario using vendor system requirement procedures such onboard firing crew drill, emplacement/displacement drill, ammunition resupply, vehicle driving operations, and other system operations as applicable. The scenario will be determined by USG PdM SPH-M and given to vendor personnel to execute.

All firing positions and vehicle movement routes will be determined by test site. The scenario will consist of executing multiple fire missions from different positions along with conducting vehicle survivability moves and an ammunition resupply from the RSV to the SPH. Target grid locations will be given to vendor personnel to input into the weapons fire control system. The fire mission parameters will be calculated by the fire control system.

Vendor personnel will determine the ammunition loadout based on the given scenario. Under direction of test site, vendor personnel will start the

UNCLASSIFIED Page 23 of 32 scenario and continue at their own pace until the scenario is completed.

Multiple iterations of the scenario will be completed.

2.5.5.3. Data Output

• Time to complete scenario with individual time stamps for each event

• Record of test firing completed to include fire mission parameters.

• Record of vehicle movement missions completed.

• Video recording of testing.

• Overhead drone video recording.

2.5.6. Rate Of Fire

2.5.6.1. Required Vendor Personnel

• System Subject Matter Expert (SPH)

• Full System Operator Crew (SPH)

2.5.6.2. Description

2.5.6.2.1. Man-Fire Inspections: Before onboard firing is permitted at the test site the cannon system must undergo a magnetic particle inspection per test center requirements. At minimum the cannon tube, breech ring, and breech block must under the inspection. Vendor personnel will disassemble and clean the cannon system components that require inspection. Test site personnel will conduct a magnetic particle inspection on each component to ensure the components are free of cracks/damage and confirm they are safe for onboard firing operations. After inspections are completed vendor personnel will reassemble the cannon system.

Vendor personnel will conduct any required post cannon system assembly maintenance and complete system checkout by executing function checks and dry run fire missions. Before any onboard firing operations occur after a major weapon reassembly, a minimum of three remote fired checkout rounds will be fired.

2.5.6.2.2. A rate of fire test will be conducted on the SPH to demonstrate the systems maximum achievable rate of fire in defined scenario. USG PdM SPH-M will determine fire mission parameters such as QE, projectile/propelling charge combination, propelling charge zone, and ammunition quantities that will be used during this test. Vendor personnel will conduct any pre-operation/pre-fire maintenance on the system and emplace the SPH at a test site designated gun position. Under test site direction vendor personnel will upload the SHP with the pre-determined ammunition components and enter the given fire mission parameters into the weapons fire control system. Under test site direction, vendor personnel will execute the fire mission with the intent to fire the weapon at the maximum rate of fire with the given parameters. Multiple iterations of the test will be completed with varying fire mission parameters.

2.5.6.3. Data Output

• Record of test firing completed to include fire mission parameters.

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• Rate of fire mission total time with individual time stamps for each shot.

2.5.7. SPH Climatic Chamber Test

2.5.7.1. Required Vendor Personnel

• System Subject Matter Expert (SPH)

• Full System Operator Crew (SPH)

• System Maintainers/Mechanics

2.5.7.2. Description

2.5.7.2.1. The SPH will undergo climatic chamber testing in both hot (120 deg.

F) and cold (-25 deg. F) conditions. Ammunition will be temperature conditioned to the same respective temperature. Vendor personnel will conduct any pre-test maintenance on the SPH such as fluid/lubricant change out and installation of weather kits to prepare the SPH for the respective climatic conditions. Vendor personnel will emplace the SHP in test site climatic chamber and the chamber/system will be temperature conditioned to respective climatic conditions. Once the desired climatic conditions are reached the system will undergo operational function checks to include full system power up, sub-system function checks, and main armament test firing. Vendor personnel will complete any pre-operation system maintenance (PMCS) before operational function checks and test firing are conducted. At the direction of test site vendor personnel will conduct the designated operational function checks along with loading and firing weapon system while the system is in the chamber at the desired climatic conditions. Multiple iterations of operational function checks and test firing will be completed on separate days with chamber at the desired climatic conditions.

2.5.7.3. Data Output

• Record of chamber climatic conditions throughout testing

• Documented maintenance required to prepare the system for respective climatic conditions.

• Record time for system to become fully functional.

• Results of operational function checks at the respective climatic conditions.

• Record of test firing completed to include ammunition types/combinations and weapon system parameters.

• Video recording on testing.

2.6. Phase 6 – US Ammuniton Compatibility (Optional Test)

2.6.1. Projectile Ram and Extract Test

2.6.1.1. Required Vendor Personnel

• System Subject Matter Expert (SPH)

• Full System Operator Crew (SPH)

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• System Maintainers/Mechanics

2.6.1.2. Description

2.6.1.2.1. Vendor personnel will emplace the SPH at test site designated gun position. Vendor personnel will complete any required pre-operation maintenance (PMCS or pre-fire checks) to prepare the system for operations. Under direction from the test site, vendor personnel will operate the weapon system to conduct ram and extract testing. Inert projectiles will be used during this test. Testing will consist of following procedures:

• The projectile will be rammed into cannon tube at a pre-determined loading

QE.

• Test site personnel will then measure and record the seating depth of the projectile.

• The cannon tube will then be elevated to max QE up to the upper bump stop (or software soft stop) at the maximum elevation rate of the weapon control system with two sudden stops during the path to max QE.

• The cannon tube will then be depressed to minimum QE down to the lower bump stop (or software soft stop) at the maximum rate of the weapon control system.

• The cannon tube will then be moved 0 Mils QE and test site personnel will measure and record the seating depth of the projectile.

• The projectile will then be extracted using a test site provided extraction kit capable of measuring the extraction force. The extract force will be recorded.

• The projectile will rotated 90 degrees in either direction and the above steps will be repeated. After completing the second ram and extract sequence with the same projectile, the projectile will be discarded.

2.6.1.2.2. Multiple iterations of ram and extract testing using a new projectile will be completed. Varying load QE’s will also be implemented into the test as applicable.

2.6.1.3. Data Output

• Projectile extraction force.

• Projectile seating depth.

• Photos of projectiles both pre and post ram and extraction.

• Document any projectile fallbacks if they occur.

2.6.2. Compatibility Firing Test

2.6.2.1. Required Vendor Personnel

• System Subject Matter Expert (SPH)

• Full System Operator Crew (SPH)

• Cannon System Subject Matter Expert

2.6.2.2. Description

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2.6.2.2.1. A limited US ammunition compatibility firing test will be completed with current field US ammunition components. Vendor personnel will dictate what US ammunition components will be fired in the system such as the maximum allowable propelling charge zone. Vendor personnel will complete any pre-operation/pre-fire maintenance on the system and emplace the system at the designated test site gun position. Under direction of test site, vendor personnel will load and fire the weapon system with the pre-determined US ammunition components and configuration.

Weapon system parameters (QE and AoF) will be determined by test site personnel.

2.6.2.3. Data Output

• Record of US ammunition components fired and configuration.

• Muzzle velocities.

• Chamber pressure via copper crusher gauges.

2.7. Phase 7 - PM CAS Limited Ammunition Qualification Testing

2.7.1. Propellant Safety Testing

2.7.2. Sequential Environmental Test For Safety

2.7.3. Sequential Environmental Test For Performance

2.8. Phase 8 – Mobility/Transportability Testing

2.8.1. Mobility

2.8.1.1. Max Speed and Acceleration

2.8.1.1.1. Required Vendor Personnel

• System Subject Matter Expert (SPH & RSV)

• System Operators (SPH & RSV)

2.8.1.1.2. Description

2.8.1.1.2.1. Both SPH and RSV will undergo maximum speed and

acceleration testing. Testing will be conducted in accordance with TOP 2-2-602A. Test site instrumentation personnel will install necessary instrumentation on vehicles to capture vehicle speed and acceleration data. A total of four runs will be completed on a flat paved surface vehicle course. Vendor personnel will complete any pre-operation maintenance on the systems. Vendor personnel will then operate the systems under direction from test site personnel.

2.8.1.1.3. Data Output

• System maximum speed and acceleration results.

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2.8.1.2. Drawbar Pull Test

2.8.1.2.1. Required Vendor Personnel

• System Subject Matter Expert (SPH & RSV)

• System Operators (SPH & RSV)

2.8.1.2.2. Description

2.8.1.2.2.1. Both SPH and RSV will undergo drawbar pull testing. Testing will be conducted in accordance with TOP 02-2-604 CN. Test site instrumentation personnel will install necessary instrumentation on vehicles. Vendor personnel will complete any pre-operation maintenance on the systems. Vendor personnel will then operate the systems under direction from test site personnel.

2.8.1.2.3. Data Output

• System drawbar pull test results.

2.8.1.3. Standard Obstacles

2.8.1.3.1. Required Vendor Personnel

• System Subject Matter Expert (SPH & RSV)

• System Operators (SPH & RSV)

2.8.1.3.2. Description

2.8.1.3.2.1. Both SPH and RSV will conduct a limited standard obstacles course. The obstacles will consist of step climb and trench crossing courses at test site. Step height and trench width will vary and be based on system capabilities. Vendor personnel will complete any pre-operation maintenance on the systems. Vendor personnel will then operate the systems over the obstacles course under direction from test site personnel.

2.8.1.3.3. Data Output

• Results of system ability to traverse obstacles.

2.8.1.4. Longitudinal Grades and Side Slopes

2.8.1.4.1. Required Vendor Personnel

• System Subject Matter Expert (SPH & RSV)

• System Operators (SPH & RSV)

2.8.1.4.2. Description

2.8.1.4.2.1. Both SPH and RSV will conduct longitudinal and side sloped graded surface operation testing. The percent grade will vary and depend on vendor system operation requirements. The available longitudinal grades range from 5% to 60% and the side slope grade range from 10% to 40%. Maximum grade at which the system is operated on will be based on system capabilities. Vendor personnel

UNCLASSIFIED Page 28 of 32 will complete any pre-operation maintenance on the systems. Vendor personnel will then operate the systems on the longitudinal grade and side slope course under direction from test site personnel. The vehicles will be operated on the grades/slopes starting with the smallest grade working up the vendor determined maximum grade.

2.8.1.4.3. Data Output

• Results of system ability to traverse longitudinal and side graded slopes.

2.8.1.5. Towing

2.8.1.5.1. Required Vendor Personnel

• System Subject Matter Expert (SPH & RSV)

• System Operators (SPH & RSV)

2.8.1.5.2. Description

2.8.1.5.2.1. SPH and RSV will both undergo limited towing testing. Testing will consist of each vehicle towing or being towed by one another or a similar vehicle. Testing will take place over various terrains at different test site vehicle courses, towing distances will be pre-determined.

Vendor personnel will use the towing provisions included in the systems BII kit (or similar kit) to hook up to the vehicle being towed.

Vendor personnel will complete any pre-operation maintenance on the systems.