SRD - TMRS Upgrade v14_DRAFT_Attachment 1. docx.pdf

CUI

SYSTEM REQUIREMENTS DOCUMENT

E-9A TELEMETRY RELAY SYSTEM (TMRS)

01 August 1, 2022

Prepared for:

Mobility Directorate, Legacy Training Aircraft Division Tinker AFB, OK E-9A Programs

Prepared by:

E-9A Integrated Product Team

Legacy Training Aircraft Division Program Office Tinker AFB, OK

Distribution Statement D: Distribution authorized to the Department of Defense and U.S. DoD contractors only; CUI unclassified documents; 23 November 2020. Other requests shall be referred to E-9A Program Office.

Controlled by: United States Air Force

Controlled by: E-9A Program Office

CUI Category: General Procurement and Acquisition

Distribution/Dissemination Control: D

POC: kelly.jordan.3@us.af.mil

Approved by:

MR. KEL ADAMS Date

ACC A589/A5TT

LT COL PAUL EINREINHOFER Date

82 ATRS/CC 53 WEG

MS. KELLY JORDAN Date Specialized Trainers Aircraft Branch Chief

Table of Contents

1. SCOPE

1.1. System Overview

2. APPLICABLE DOCUMENTS

2.1. General

2.2. Government Documents

2.2.1. Specifications, Standards, and Handbooks

2.2.2. Other Government Documents, Drawings, and Publications

2.3. Non-Government Publications

2.4. Order of Precedence

3. REQUIREMENTS

3.1. Required States and Modes

3.2. System Capability Requirements

3.3. System Interface Requirements

3.4. System Internal Data Requirements

3.5. Safety Requirements

3.6. System Environment Requirements

3.7. Computer Resource Requirements

3.8. System Quality Factors

3.9. Design and Construction Contraints

3.10. Personnel Related Requirements

3.11. Logistics Related Requirements

3.12. Other Requirements

3.13. Packaging Requirements

4. VERIFICATION PROVISIONS

4.1. Verification Methods

4.1.1. Demonstration

4.1.2. Test

4.1.3. Analysis

4.1.4. Inspection

5. REQUIREMENTS TRACEABILITY

5.1. Traceability to Capability Document or System Specification

5.2. Traceability to Subsystems Requirements

6. APPENDIX SECTION

6.1. Appendix A - Acronyms and Definitions

6.2. Appendix B - Key Performance Parameters/Key System Attributes

E-9A with TMRS Antenna

1. SCOPE

This Systems Requirement Document (SRD) describes attributes, performance parameters, processes, objectives, and other requirements needed for an E-9A Telemetry Relay System (TMRS) upgrade.

1.1. System Overview

The primary requirement for the E-9A is to receive S-Band telemetry (TM) for over-the-horizon (OTH) missions in order to track and record aerial S-band targets and relay them via L-band to ground stations. The telemetry relay system (TMRS) system consists of a Synthetic Beamforming Antenna (SBA) array mounted on the right side of the aircraft along the length of the fuselage. This system is based on digital beamforming for azimuth tracking and a re-configurable array for elevation coverage. It operates from 2.2 to 2.4 gigahertz (GHz).

The E-9A usually operates at 8,000-20,000 feet Mean Sea Level (MSL) for telemetry collection and relay. Performance characteristics of the E-9A’s original Telemetry Relay System was determined, published, and approved in Specification number SP8408 0001 (in 1986), and the modernized system as currently configured is documented in Telemetry Phased Array Antenna Specifications Document 0405-2001 (in 2004).

The original TMRS included the following subsystems: Telemetry Phased Array Antenna, Telemetry Receiver, Data Distribution, Record, Inter-range Instrumentation Group (IRIG) Timing, Telemetry Operator Console (TOC), Re-transmission, Diagnostic Equipment, and Auxiliary Rack. The original TMRS Tracking, Equipment Control, Platform Status, and Diagnostic Functions are part of the Airborne Platform/Telemetry (AP/TM) Control System. The control system is divided into three functional subsystems: Telemetry Operator Console (TOC), Antenna Control Computer (ANCC), and Beam Steering Processor (BSP).

2. APPLICABLE DOCUMENTS

This section lists the number, title, revision, and date of all documents referenced herein.

2.1. General

Documents listed in this section are specified in sections 3, 4, or 5 of this SRD. This section does not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document warfighter’s are cautioned that they should meet all specified requirements of documents cited in sections 3 or 4 of this specification, whether or not they are listed.

2.2. Government Documents

The following sections list government documentation applicable to this SRD.

2.2.1. Specifications, Standards, and Handbooks

The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract.

IRIG 106-01 Telemetry Standards, Range Commanders Council (Revised Feb 01) http://jcs.mil/RCC/PUBS/pubs.htm IRIG 118-02 Test Methods for Telemetry Systems and Subsystems, Volume II:

Test Methods for Telemetry RF Subsystems IRIG 118-03 Test Methods for Telemetry Systems and Subsystems, Volume I:

Test Methods for Vehicle Telemetry Systems MIL-DTL-5002F Surface Treatments and Inorganic Coatings for Metal Surfaces of

Weapons Systems MIL-HDBK-217F Reliability Prediction of Electronic Equipment MIL-HDBK-310 Global Climatic Data for Developing Military Products MIL-HDBK-454C General Guidelines for Electronic Equipment MIL-HDBK-5400 Electronic Equipment, Airborne General Guidelines for MIL-HDBK-808 Finish, Protective and Codes for Finishing Schemes for Ground and

Ground Support Equipment MIL-I-46058C Insulating Compound, Electrical (for Coating Printed Circuit

Assemblies) MIL-PRF-8625 Anodic Coatings for Aluminum and Aluminum Alloy MIL-STD-1285D Marking Of Electrical And Electronic Parts MIL-STD-130N Identification Marking of U.S. Military Property MIL-STD-1353C Electrical Connectors, Plug-In Sockets And Associated Hardware MIL-STD-1472H Human Engineering Design Criteria for Military Systems MIL-STD-1568D Materials and Processes for Corrosion Prevention and Control in

Aerospace Weapons Systems MIL-STD-1587E Material and Process Requirements for Aerospace Weapons Systems MIL-STD-202H Test Methods For Electronic And Electrical Component Parts

MIL-STD-27733 MODIFICATION AND MARKING REQUIREMENTS FOR TEST

EQUIPMENT IN AEROSPACE VEHICLES AND RELATED

SUPPORT EQUIPMENT

MIL-STD-461G Control of Electromagnetic Interference, Emissions, and Susceptibility

MIL-STD-461G Requirements For The Control Of Electromagnetic Interference Emissions

MIL-STD-464 Electromagnetic Environmental Effects Requirements for Systems MIL-STD-704F Aircraft Electric Power Characteristics MIL-STD-7179 Finishes, Coatings, and Sealants, for the Protection of Aerospace

Weapons Systems and Support Equipment MIL-STD-792F Identification Marking Requirements For Special Purpose

Components MIL-STD-810H Environmental Test Methods and Engineering Guidelines

MIL-STD-810H Environmental Engineering Considerations & Lab Tests MIL-STD-882E System Safety Program Requirements MIL-STD-883L Microcircuits MIL-STD-889D Galvanic Compatibility of Electrically Conductive Materials MIL-STD-981C Design, Manufacturing And Quality Standards For Custom

Electromagnetic Devices MIL-STD-1366 Transportability Criteria

2.2.2. Other Government Documents, Drawings, and Publications The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract.

Original required drawings are prepared in accordance with the standards defined in DRM- 31000. The original mounting details conform to drawing 8408-0005 and the DC power connectors and pin assignments are shown in drawing 8408-0005.

2.3. Non-Government Publications

The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract.

ASTM-D2000 Rubber Products in Automotive Applications

2.4. Order of Precedence

Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and the references cited herein (except for related specification sheets), the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.

3. REQUIREMENTS

In recent years the TMRS has been suffering from extremely high unreliability rates and poor data collection. The major contributing factor for these issues are the single points of failure contained within the system.

3.1. Required States and Modes

The TMRS upgrade shall meet the following requirements:

• Receive S-band and retransmit L-Band telemetry data

• Interface with existing antenna

• Provide interfaces specific to both operators and maintainers

• Eliminate unneeded equipment from equipment racks

• Eliminate unneeded equipment from the TOC

• Alleviate cooling issues in the rear of the aircraft

• Eliminate single points of failure with built in redundancy

• Support higher data rates and modern error correction methods

3.2. System Capability Requirements

The telemetry system consists of 6 sub-systems, the Antenna Assembly, the Processing System, the Conversion System, the Relay System, the Recording System, and the Telemetry Operators Console (TOC).

E-9A Telemetry Relay System (TMRS) block diagram

The auxiliary rack is configured with mission specific equipment, as needed, in accordance with temporary modification packages, submitted for local Aircraft Change Control Board (ACCB) approval.

3.3. System Interface Requirements

The TOC is the primary interface between the Telemetry System and the Telemetry Operator. It controls and monitors peripheral TM equipment and the ANCC. It also records all diagnostic and mission tracking data, and provides real-time displays of the aircraft position and all beam tracking data. The TOC interfaces to: TM receivers, instrumentation recorders, GPS sensor output, GPS IRIG time, and aircraft Aeronautical Radio, Inc. (ARINC)-429 data bus. Connections to these interfaces are made either directly to the TOC chassis or to connectors in the System Interface Drawer (SID).

3.4. System Internal Data Requirements

The original TOC provides single point control of the Telemetry (TM) receive and record function and provides the capability to record all TM control and diagnostic data. Power is controlled for the receivers and for instrumentation recorders.

3.5. Safety Requirements

All newly designed equipment items incorporated into TMRS are designed and fabricated to meet the requirements of MIL-HNBK-454C, Requirement 1 and MIL-STD-1472, as described below in section 3.9.

3.6. System Environment Requirements

The original equipment installed in and on the aircraft is designed to withstand the following environmental conditions:

Internal equipment External Equipment Temperature/ Altitude

Operating: 10°C (50°F) and 36°C (97°F); 0 to 10,000 feet Non-operating: -40°C (-40°F) to 70°C (158°F); 0 to 30,000 feet

Operating: -55°C (-67°F) and 71°C (160°F); 0 to 10,000 feet Non-operating: -55°C (-67°F) to 85°C (185°F); 0 to 30,000 feet

Humidity Operating: 75% humidity without condensation Non-operating: 95% humidity including condensation

100%, including condensation operating and non-operating

Shock Operating: 6 G's, 11 msec half sine pulse in each of the six principle axis directions Non-operating: 15 G' s, 11 msec half sine (crash safety) pulse in each of the six principle axis directions

Operating: 6 G's, 11 msec half sine pulse in each of the six principle axis directions.

Non-operating: 15 G's, 11 msec half sine pulse in each of the six principle axis directions

Vibration Continuous operation while sustaining aircraft induced vibrations inside the aircraft’s flight envelope and withstands normal flight motions, including takeoff and landing. In addition, this equipment meets the following sinusoidal vibration levels: 0.010 in., 1.5 G, 5-55 Hz

Continuous operation while sustaining aircraft induced vibrations inside the aircraft’s flight envelope and withstands normal flight motions, including takeoff and landing. In addition, this equipment meets the following sinusoidal vibration levels:

0.010 in., 1.5 G, 5-55 Hz

Explosion N/A N/A Waterproofness See Humidity requirement above. External equipment mounted to the aircraft fuselage within radome structures designed to continuously operate when exposed to dripping water and condensation in the course of normal aircraft operation.

Fluids Susceptibility

See Humidity requirement above. All externally exposed materials (radomes, radome gaskets, support structures, exposed antennas, etc.) shall not be affected by fluids (fuel, hydraulic fluid, lubricating oil, alcohol, de-icing fluid and water) commonly encountered in airborne and ground operations

Sand And Dust Continuous operation when exposed to:

150 ug/m^3 PM10 35 ug/m^3 PM2.5

Continuous operation when exposed to Gulf Range environmental conditions

Fungus Resistant to promotion or growth of fungus in accordance with MIL-

STD-810H

Resistant to promotion or growth of fungus in accordance with MIL-STD- 810H

Salt Spray See Humidity requirement above. Continuous operation when exposed to Gulf Range environmental conditions

Acoustic Environment

Inherent acoustic conditions in aircraft captive carriage.

The average acoustic level is 80 dB (dB referenced to 2 x 104 dynes /cm^2).

Inherent acoustic conditions in aircraft carriage. The acoustic level is 140 dB (dB referenced to 2 x 104 dynes /cm^2

3.7. Computer Resource Requirements

The original TOC provided the ability to execute all post mission analysis software as well as providing a compatible platform for software development and configuration control for the TOC, ANCC, and BSP software and firmware. The TOC incorporated processors that are pre-assembled and off-the-shelf. Microprocessors contained in the TOC are available from multiple sources, including an Electrical Erasable Programmable Read-Only Memory (EEPROM) programmer, a complete set of software development support tools (including a program text editor), linking loader and runtime support routines, and Peripheral Equipment compatible with the hardware and software. The original computer/processor provided memory throughput and input/output channel capacity.

3.8. System Quality Factors

Effective Mean Time Between Failure (EMTBF) of zero failures and zero system degradation in 100 hours as bench tested. Failure is defined as loss or corruption of data from processing system to telemetry re-transmit/recording system.

Availability - Calculated using the formula: Availability = Effective Mean Time Between Failures (EMTBF) + Mean Corrective Time (Mct). The system availability rate of 99% for a scheduled six hours per day, five days per week, and twelve months per year, not to exceed a total yearly time of 1000 hours. Failure is defined as loss or corruption of data from processing system to telemetry re-transmit/recording system.

Maintainability – Mean corrective maintenance time (MCMT) of 60 min and a maximum mean corrective maintenance time (MaxMCMT) of 120 min at the 90th percentile. Two maintenance technicians and a scheduled preventative maintenance (PM) period occurs no more frequently than once every five days.

3.9. Design and Construction Constraints

The original order of precedence in the design and development of the TMRS is as follows:

Equipment

• Existing equipment in the Department of Defense (DOD) inventory shall be considered for use to the fullest extent possible for any suitable application within the system.

• New equipment shall be considered if existing military or commercial equipment is not available to satisfy the performance requirements of this specification; new equipment shall be in accordance with the applicable military specification list.

• Selection of materials and processes for newly manufactured equipment shall be in accordance with (IAW) MIL-STD-1587 and MIL-STD-1568. Electronics shall conform to MIL-HDBK-5400. Printed circuit/printed wire boards shall be conformal coated per QPL- 46058-84 using Quality Products List (QPL) materials. The program office shall approve materials that are not specified in these standards.

• Interchangeability - The design of each assembly is such that the operation of that assembly is not be degraded when a Line Replaceable Unit (LRU) is replaced. In addition, the LRU is designed to operate without degradation when a component part of that LRU is removed and replaced by an identical spare part meeting the same procurement specification.

Interchangeability and replace-ability is compliant with requirements of MIL-HDBK-454, Requirement 7.

• The following limitations apply to electronic parts selected for use on newly designed equipment:

• All parts and circuits shall be representative of a general class available from more than one source.

• No germanium devices shall be used.

• Wet tantalum capacitors shall not be used in the design without specific written approval.

• Custom designed integrated and hybrid circuits shall be avoided unless no reasonable alternative exists.

• Electrical connectors requiring potting compound material shall not be used.

• Certain chemicals have been identified in the Occupational and Safety Health Act

(OSHA) as cancer producing substances (carcinogens). Before using any materials which might contain these chemicals, they should be evaluated IAW the Code of Federal Regulations, Title 29, Part 1990. Consideration of the toxicity of a substance shall be given priority in material selection. Materials that contain polychlorinated biphenols (PCBs) shall not be used.

• Edge card connectors shall not be used.

• Polyvinyl chlorides (PVC) shall not be used in any application including, but not limited to, insulation, wire/cable sheathing, sleeving and/or as a structural material for part or component fabrication. PVC insulated wire and/or cable shall not be used; rather, the contractor shall select one of the many suitable non-PVC insulated wires arid/or cables.

Electromagnetic Radiation/Compatibility/Interference

• Maintain standards of existing system without damage:

o Electromagnetic Radiation (EMR) - The Telemetry antenna is protected against radiation from other RF emitters aboard the aircraft. Band-pass filtering is provided within the TM antenna and protects it from external out-of-band emitters over the frequency range of 10 MHz to 18 GHz. Maximum in-band radiation should be kept to a maximum equivalent input of -30 dBm.

o Electromagnetic Compatibility (EMC) - TMRS instrumentation equipment is designed to be compatible with other electronic equipment installed in the aircraft and with the Gulf Range ground and sea electromagnetic environment (EME). The airborne (flight) environment includes the electromagnetic environment created by RF transmitters and receivers. The Gulf Range ground or sea EMC data will be furnished upon request.

o Electromagnetic Interference (EMI) - The TMRS upgrade shall comply with the EMI control requirements of MIL-STD-461G.

Materials

• Prohibited Materials: Vinyl, polyvinyl chloride, household/architectural type caulking compounds and corrosive type RTV (yields acetic acid during curing) materials are prohibited for use in all forms, interior or exterior.

• Flammable Materials - Flammable materials shall not be used except as permitted by MIL-HDBK-454, Requirement 3. Interior coated fabrics, seat cushion coverings, carpeting, etc., shall be self-extinguishing materials. Interior materials containing wool, polyvinyl chloride (PVC), PVC coated fabrics, modified Aramid, and phosphorous based fire retardant treated cotton are prohibited due to the toxic level of their thermal decomposition products should a fire occur.

• Arc-resistance Material - Material used for insulation of electrical power circuits, where arcing is possible (connector inserts, relays, circuit breakers, etc.) shall be IAW MIL- HDBK-454, Requirement 26.

• Fibrous Material, Organic - Selection and use of organic fibrous material shall be IAW MIL-HDBK-454, Requirement 44. Use of wood and wood products are prohibited in all structural applications, interior or exterior.

• Fungus Inert Material - Selection of materials for the control of moisture and fungus shall be IAW MIL-HDBK-454, Requirement 4.

• Insulating Materials, Electrical - Electrical insulating materials shall be selected and used IAW MIL-HDBK-454, Requirement 11.

• Lubrication - Criteria for the choice of lubricants shall be as established by MIL-HDBK- 454, Requirement 43.

• Magnesium - All magnesium alloys shall be subject to approval by the procuring activity.

• Rubber - Rubber materials shall conform to criteria defined in ASTM-D2000.

• Fasteners - Ferrous alloy components and inside/outside-threaded assemblies/fasteners shall be cleared and plated with cadmium per QQ-P-416 to a minimum of 0.0003 inches unless thread tolerances dictate a different thickness. Aluminum fasteners shall be anodized per MIL-PRF-8625.

• Sandwich Core Material - If polyurethane is used as a foamed, skin stabilizing sandwich core material in structural areas such as walls, only the polyether, non-reverting type shall be used.

Parts:

• Parts Standardization - For newly designed equipment, standard parts shall be selected IAW the requirements of MIL-STD-5400. The use of nonstandard parts, such as non-COTS items, shall require program office approval.

• Microelectronics for newly designed equipment shall be screened and qualified to a minimum quality level of Class B, IAW the requirements and procedures contained in MIL- M-38510. If micro-electronic devices are proposed for use that are not from MIL-M-38510 qualified sources, as listed on QPL-38510, the devices shall be screened IAW MIL-STD-883, Notice 5, Method 5004, Class 8, prior to use. All microelectronics used in the unit shall be packaged in hermetic packages, and no "plastic" (i.e., epoxy, silicone, phenolic, or other organic materials) encapsulated devices shall be used.

• Semiconductors for newly designed equipment shall be screened and qualified to a minimum quality level of Class Joint Army Navy (JANTX) or, IAW the requirements and procedures contained in MIL-S-19500. If semiconductor devices are proposed for use that are not selected from MIL-S-19500 qualified sources listed on QPL-19500, the devices shall have transition burn-in IAW MIL-S-19500 as a minimum. All semiconductors used in the unit shall be packaged in hermetic packages, and no "plastic" (i.e., epoxy, silicon, phenolic, or other organic material) encapsulated devices shall be used.

Processes

• Conformal Coating - Printed circuit/printed wire boards shall be conformal coated with coatings that meet the requirements of MIL-I-46058, using materials selected from sources listed in current QPLS.

• Brazing - Brazing shall be IAW MIL-HDBK-454, Requirement 59.

• Finishing - Surfaces shall be given a protective finish IAW MIL-HDBK-808, MIL-DTL-

5002 and MIL-STD-7179 for new equipment. The metals shall be of the corrosion resistant type treated to resist corrosion due to atmospheric conditions likely to be encountered in storage or normal service IAW MIL-STD-810 and MIL-HDBK-310.

Unless suitably protected against electrolytic corrosion, dissimilar metals shall not be used in contact with each other IAW MIL-STD-889.

• Soldering - Soldering shall be IAW MIL-HDBK-454, Requirement 5.

• Welding - Welding shall be IAW MIL-HDBK-454, Requirement 13.

• Aluminum Surface Treatments - Chemical conversion coating with anodizing of aluminum alloys shall conform to MIL-PRF-8625.

• Workmanship - Workmanship shall be IAW MIL-HDBK-454, Requirement 9.

• Nameplates and Product Marking - TMRS design is compliant with MIL-HDBK-454, requirement 67 and MIL-STD-27733. Marking does not adversely affect leakage paths between conductors or any other factor of equipment performance. Marking is in accordance with the requirements of MIL-STD-130.

• Electrical Bonding/Grounding/Lightning Protection - TMRS is designed IAW the requirements of MIL-STD-464 as it applies to the control of electrical bonding for current return paths, antenna installation, lightning protection, reduction of precipitation static, and corona discharge.

3.10. Personnel Related Requirements

Field level maintenance tasks are intended to be implemented by Air Force Instrumentation & Telemetry technicians or equivalent contractor personnel. Maintenance tasks requiring more than one person shall be minimized. Human engineering design criteria and principles shall be applied in the design of all new equipment items incorporated into the TMRS subsystem and allows effective performance by both operators and maintenance personnel.

3.11. Logistics Related Requirements

Maintenance:

The TMRS design is such that field level maintenance may be accomplished at existing facilities at Tyndall AFB. Maintenance is accomplished in the aircraft or in fixed shops as necessary and may consist of repairing, modifying, overhauling, reclaiming, or rebuilding parts, assemblies, subassemblies, components; and end items. Diagnostic commercial test equipment is calibrated in accordance with procedures and recommendations contained within the individual equipment manuals. Equipment for TMRS are based upon commercial off-the-shelf designs. These designs utilize plug-in module assemblies. Fault isolation is provided by Built-In Test (BIT) equipment and diagnostic capabilities provided by the TOC.

Maintenance and Repair Cycles - TMRS equipment requires a minimum of scheduled maintenance such as inspection, alignment, adjustment, and cleaning. These activities will be scheduled to minimize interference to operations. Provision will be made for scheduled downtime for preventive maintenance, Preventive maintenance that forces performance to drop below the specified level is classified as a relevant failure of the equipment. The equipment is designed to require a minimum of site or depot maintenance/overhaul.

Levels of Repair - The level of repair will normally be by replacement of the LRU. This is normally a printed circuit card, subassembly, or assembly. Repair of printed circuit boards will normally be accomplished off-line. Other functional elements such as modules that may be repaired by replacement in the field are "plug-in" designs. Non-Government Furnished Property (GFP) assemblies will be returned to the vendor for repair.

Failure Detection and Isolation - Capabilities are provided for fault detection and isolation to a LRU. Mission Tracking Data (MTD) files are generated from each operational mission and will enhance the capability to rapidly determine system discrepancies. MTD files will provide the capability to determine which combinations of tests are needed to further isolate faults. Tests will consist of automated, semi-automated, and manual procedures that permit compliance with the specified Mct. These techniques, in conjunction with operator observations, reported in post mission de-briefs, or discrepancies noted in aircraft forms, enable the following fault detection and isolation steps:

• Recognition that a fault exists.

• Isolation of the fault to a point of repair.

Service and Access - Equipment design and construction is such that it can be maintained within the specified maintainability requirements and IAW the Design for Maintainability requirements of MIL-STD-1472. The equipment is maintainable at the field level by normal maintenance techniques using U.S. Air Force Instrumentation & Telemetry technicians, or contractor personnel. To the maximum extent possible, the design facilitates maintenance as follows:

• Components and electrical contact points that require frequent servicing, repair, or replacement are readily accessible.

• Major and high-failure rate components and modules are removable from their enclosures without excessive disassembly when the equipment is installed in its operating location.

• Assemblies and subassemblies are removable from their enclosures without disassembly.

• Subassemblies are designed to permit maximum interchangeability and provide test accessibility.

• Test points are accessible without disassembly of the subassemblies.

• Access to subassemblies and circuit cards through the use of access doors, swing-out units, or pullout drawers having drawer slides.

• When required, cable extenders, cable retractors, cable supports, and circuit card extenders are provided as part of the individual equipment to allow operation in the open position.

• All components, connectors, and assemblies are identified with reference designations and locations.

• Circuit breakers are accessible from the front of the cabinet. Individual equipment fuses are accessible for replacement.

• A minimum of test equipment and special tools are required.

• Where possible, connectors are appropriately keyed to prevent improper insertion or connection to the wrong terminal.

3.12. Other Requirements

Existing commercial manuals, in conjunction with documents generated by the TMRS upgrade will be used to generate a TMRS system maintenance manual. A Telemetry Operator manual will also be generated that describes in detail the interaction with other aircraft systems and the mission specific procedures needed by the Telemetry Operator to successfully Receive, Record, and Relay telemetry data.

3.13. Packaging Requirements

Transportability - Equipment in the TMRS upgrade has been designed to meet the transportability requirements of MIL-STD-1366.

4. VERIFICATION PROVISIONS

Program requirements stated within this SRD must be verified to show they have been met. The following methods will be utilized to perform requirement verification in accordance with the Statement of Work (SOW).

4.1 Verification Methods

4.1.1. Demonstration

Verification by demonstration involves the operation, movement, or adjustment of an item. The item may be instrumented and its performance may be monitored, but only as an indirect function in support of the demonstration. Performance monitoring may have quantitative limits for satisfactory operation.

4.1.2. Test

Verification by test involves operation of the item with instrumentation to determine that specific quantitative performance requirements are met. These verifications will use special test equipment or instrumentation to obtain very accurate quantitative data for analysis. The analysis of data derived from tests is an integral part of the test program.

TMRS testing is performed IAW the requirements specified herein. System, subsystem, and equipment testing is performed IAW a Government approved system test plan and demonstrates compliance of TMRS equipment with all applicable performance specifications.

Vendor acceptance tests consist of in-plant tests performed at vendor facilities to verify compliance with the quality of material, workmanship and electrical performance requirements of the specification. Government representatives as applicable and/or O&M contractor representative verify all testing. Vendors provide test data to the O&M contractor for submission to the government as required.

Ground tests and Flight Tests provide validation of performance and capabilities of the TMRS.

All TMRS equipment is integrated into the aircraft and inspections/tests performed to verify the quality of workmanship and electrical performance prior to final flight tests. These tests are performed using approved test procedures. If the system, facility, or equipment is tested and fails any tests, the extent and cause of the failure is determined. After corrections have been made, all tests failed are then re-tested. In addition, any previously passed tests affected by corrections are repeated.

4.1.3. Analysis

Verification by analysis will show that the item meets specific requirements by technical evaluation of equations, charts, simulations, circuit diagrams, and other relevant data or by comparison with previously qualified equipment. The data evaluated may include specific parameters from component, module, or sub-assembly specifications, which may be subject to verification by other methods.

4.1.4. Inspection

Verification by inspection involves examination and review of descriptive documentation, including design documentation, and/or hardware or software listings to determine conformance with specified requirements.

Quality Assurance Provisions - TMRS upgrade quality assurance plan submitted at the Critical Design Review defined the responsibilities for inspection that is used during the implementation of the TMRS upgrade. If a major component is off-the-shelf and unmodified and has existing documented performance test data that satisfies the test requirements, this data may be offered.

Quality Conformance Inspection (In Process Inspection): The Operations & Maintenance (O&M) contractor provides in process inspection as required.

5. REQUIREMENTS TRACEABILITY

5.1. Traceability to Capability Document or System Specification Traceability to this SRD and contractual requirements shall be provided via a requirements correlation matrix to be delivered by the contractor.

5.2. Traceability to Subsystems Requirements

Traceability to this SRD and contractual requirements shall be provided via a requirements correlation matrix to be delivered by the contractor.

6. APPENDIX

6.1. Appendix A – Acronyms and Definitions

A/D Analog to Digital ANCC Antenna Control Computer ACCB Aircraft Change Control Board AM Amplitude Modulation AMD Advanced Micro Devices AGC Automatic Gain Control AP/TM Airborne Platform/Telemetry ARINC Aeronautical Radio, Inc.

BER Bit Error Rate BIT Built-In-Test BSP Beam Steering Processor CPU Central Processing Unit DOD Department of Defense ECU Environmental Control Unit Eb/N0 Signal to Noise Ratio EMC Electromagnetic Compatibility EME Electromagnetic Environment EMI Electromagnetic Interference EEPROM Electrical Erasable Programmable Read-Only Memory FM Frequency Modulation GFP Government Furnished Property GPS Global Positioning System I/O Input/Output IF Intermediate Frequency IPS Inches Per Second IRIG Inter-Range Instrumentation Group JAN Joint Army Navy LDPC Low Density Parity Check code LRU Line Replaceable Unit MaxMCMT Maximum Mean Corrective Maintenance Time MCMT Mean Corrective Maintenance Time Mct Mean Corrective Time MIL-HDBK Military Handbook MIL-STD Military Standard MSL Mean Sea Level MTBF Mean Time Between Failures MTD Mission Tracking Data NM Nautical Miles

O&M Operations & Maintenance OSHA Occupational and Safety Health Act PAM Phased Array Module PCB Polychlorinated Biphenols PCM / FM Pulse Code Modulation / Frequency Modulation PM Preventative Maintenance PVC Polyvinyl Chlorides QPL Quality Products List RF Radio Frequency R/T Receiver/Transmitter S/N Signal to Noise SBA Synthetic Beamforming Antenna SID System Interface Drawer SIU System Interface Unit SOQPSK Shaped-Offset Quadrature Phase Shift Keying SRD Systems Requirement Document STC Space Time Coding TM Telemetry TMRS Telemetry Relay System TOC Telemetry Operator Console VSWR Voltage Standing Wave Ratio

6.2. Appendix B – Key Performance/Key System Attributes

E-9A Key Performance Parameters (KPPs) # Capability Threshold Objective Justification 1 Airborne

Telemetry # of Sources

Receive TM data and track a minimum of 4 separate sources in S- Band (2200 – 2290 MHz) and relay in L- Band (1435 - 1535 MHz)

Receive TM data and track a minimum of 8 separate sources in S- Band (2200 - 2395 MHz) and relay in L- Band (1435 - 1535 MHz)

Necessary to create telemetry shoot box for air-to-air weapons

2 Antenna Receive Frequency Range: 2200 – 2290 MHz

Bandwidth: up to 18 MHz

Receive Frequency Range: 2200 - 2395 MHz.

Bandwidth: up to 25 MHz

To support WSEP over-the-horizon telemetry requirements

90% of TM missions are covered by lower (<2290 MHz) S-Band

3 Target Acquisition

Find 4 selected targets in 3 seconds or less at 40 nautical miles with a transmit power of 5W or less

Find 8 selected targets in 3 seconds or less at 40 nautical miles with a transmit power of 5W or less

Signal to noise ratio must be sufficient to track targets

4 Bit Error Rate

(BER)

Ability to select 4 data streams to track with a BER of 10-6

Eb/N0:

PCM/FM 13.5 dB SOQPSK 12 dB

Ability to select 8 data streams to track with a BER of 10-6

Eb/N0:

PCM/FM 13.5 dB SOQPSK 12 dB

BER of 10-6 is ideal BER of 10-5 is noisy BER of 10-2 is unusable

5 Antenna Field of View

-60 to +60 degrees from boresight

Greater than 60 degrees Necessary to create telemetry shoot box for air-to-air weapons

6 Data Rate Up to 12 Mb/Sec

SOQPSK

Up to 9 Mb/Sec

PCM/FM

Up to 20 Mb/Sec

SOQPSK

Up to 20 Mb/Sec

PCM/FM

Higher data rates required for new weapon systems; lower data rate required for current systems

7 Receive, Record and Re-transmit TM Data

Demodulate minimum of 4 channels

Digitally record minimum 4 channels

Analog: Retransmit minimum 4 S-band channels on L-band.

Ability to turn off retransmit system

Digital: Retransmit minimum 4 S-band channels on L-band.

Ability to turn off retransmit system.

Demodulate minimum of 8 channels

Digitally record minimum 8 channels

Analog: Retransmit minimum 4 S-band channels on L-band.

Ability to turn off retransmit system

Digital: Retransmit minimum 4 S-band channels on L-band.

Ability to turn off retransmit system.

Necessary to capture all data regardless of retransmit downlink availability

8 Supporting Documents

Technical information for technical orders and operations instructions.

Initial familiarization training and course ware for classroom instruction

Initial familiarization necessary for system operations and maintenance

9 Telemetry Operators Console

Provides operator with ability to control, monitor, analyze and correct system operation inflight

Higher speed - higher refresh rate console

Necessary for system operations and maintenance, and

DMSMS

10 Telemetry Range

100 NM for S band

G/T: 10.5 dB/K at the boresight

200 NM for L band 500 NM for S band

G/T: 10.5 dB/K at the boresight

To support over-the-horizon telemetry requirements Typical transmitter is 5W

11 Telemetry Source Altitude

Surface to 20,000 feet Greater than 20,000 feet Necessary to maximize antenna performance for over the horizon air-to-air weapon systems

12 Target Tracking Speed

Track a dynamic target at up to 30°/s at an acceleration at 30°/s2

Same as threshold Necessary to track targets at up to Mach 5

E-9A Key System Attributes (KSAs) # KSA Threshold Objective 1 Built-in-test Report Reports system status on demand Auto-reporting for system failures 2 Modulation

Capabilities Receive PCM / FM and

SOQPSK.

Downlink PCM/FM

Receive PCM / FM and SOQPSK.

Receive STC / LDPC.

Downlink PCM/FM and SOQPSK Downlink STC / LDPC

3 Controls and displays High System usability (Human machine interface) same as threshold

4 Software Capabilities Modular and upgradeable design Intuitively configurable same as threshold

5 Standards IRIG 106 capable / Chapter 10 compatible same as threshold

6 Removed Removed Removed 7 System Cooling

Constraints 70°C limitation within antenna control computer @ maximum environmental operating temperature of 36°C

50°C limitation within antenna control computer @ maximum environmental operating temperature of 36°C

8 System Quality System captures and processes data at defined quality factors same as threshold

9 Removed Removed Removed 10 System Stability System will process data at a consistent rate, will minimize data bit loss, and will not become unresponsive during a mission.

same as threshold

11 Target acquisition 3 seconds Less than 3 seconds 12 Removed Removed Removed 13 Telemetry Channel

Bandwidth 18 MHz per channel 25 MHz per channel

14 Telemetry Output Frequency

70 MHz same as threshold

15 Telemetry Recorder RMM to transfer data from airplane to TM shop and customers same as threshold