Attachment 1- Specifications.docx

SPECIFICATION

LBIS & LVDT Rigid Stage System for 155mm Cannon Gun Tube

1.0 SCOPE

This specification describes the requirement for a 35-foot-long horizontal Delivery Stage and Heavy-Duty Barrel Support Stand capable of supporting up to 30-foot-long 155mm howitzer tubes. The deliverable package shall include a 155mm LDVT chamber gauging kit.

The 155mm LDVT chamber gauging shall employ a set of opposed high-resolution LVDT sensors that can be automatically actuated to contact the chamber at several locations along its length. During normal operation, the LVDT sensors shall be in the retracted position. After the sensor has been driven to a location of interest, the LVDT sensors shall be activated and extend radially until contact is made with the chamber surface. The sensors shall then rotated 360 degrees in order to generate a highly accurate measurement of the chamber geometry. The sensors are not expected to operate in the “Swiss Notch” found in the M284 and M776 cannons. Data from these measurements shall be transmitted to a YPG-owned LP-5000™ series instrument and stored for processing and analysis using existing LaserViewer™ Analysis software.

The system shall be capable of operating with YPG-owned laser bore mapping scanners for non-contact bore measurement of 155mm cannon gun tubes.

The system shall be:

· Compatible with YPG’s existing LP-5000 controller

· Capable of precision profiling of 155mm chambers using LVDT technology, with typical accuracy +/-0.0005 inch (+/- 0.0127mm) or better.

· Compatible with Laser Bore Inspection Sensors (LBIS) for 155mm cannons

1.1 GENERAL DOCUMENTATION

The following documents shall be supplied with the system:

· Certification of calibration of the LDVT sensor

· Certification of weight carrying capacity of Heavy-Duty Support Stand

· Certifications of Warranty of any/all commercial OEM equipment

1.2 ENVIRONMENT

The system shall operate in a shop with:

· Ambient temperatures ranging from 10 to 45 degrees C

· Relative humidity between 10 and 95% (non-condensing)

· Available power 120-240 VAC (+/- 10%) at 50-60 Hz

2.0 GENERAL REQUIREMENT

The system deliverables shall include the following major components:

· 1 ea. 155mm chamber profiling LVDT Sensor (LPS) with Dual Opposing Sensors

· 1 ea. Rigid Sensor Delivery Unit (SDU)

· 1 ea. Heavy Duty Barrel Support Stand

· 2 ea. Adjustable Barrel Support Mounts

· 1 ea. Adjustable Barrel Support Mount (Extended)

· System Accessories

· Installation at YPG In addition, the vendor shall upgrade the YPG-owned LP-5000 controller to support 3-axes of motion, and integrate the instrument into the system.

3.0 PERFORMANCE SPECIFICAIONS

3.1 155mm UHR Chamber Gauge Scanning Module

· Gauge Type: Dual, opposed LVDT

· Gauge Measurement Resolution: 0.0025 mm (0.0001 inch)

· Gauge Linearity: 0.0051 mm (0.0002 inch)

· Accuracy Goal: +/- 0.0127mm (0.0005 inch)

· Measuring Range (diameter): 157.5 mm to 171.5 mm (6.20 inch to 6.750 inch)

· Angular Sampling Resolution: Variable – up to 0.1 degrees per sample (3,600 samples per revolution)

3.2 Rigid Sensor Delivery Unit (SDU)

· The total travel of the SDU shall be no less than 35 feet

· The SDU shall be capable of being interfaced with both Laser Profile Sensors and 155mm

· The SDU shall be capable of allowing data acquisition over the full length of the 155 mm bore and up to the edge of the muzzle.

· Axial positional resolution shall be at least ± 0.025mm (0.001 inch)

· Absolute axial position shall be at least ±0.5 mm (0.02 inch) or better in linear resolution

· Position repeatability shall be at least 0.25mm (0.010 inch) or better in unidirectional operation.

· Provision for shock-resistant and solid mounting to shop floor

3.3 Heavy-Duty Barrel Support Stand

The Heavy-Duty Stand shall include the following features:

· Design and certification shall be provided with safety factor 3 requirement.

· Certified to be capable of supporting gun tubes of a minimum weight of 10,000 lbs.

· Provided with 2 ea. heavy duty Adjustable Barrel Support Mount “V-blocks” that can be vertically adjusted and locked into a wide variety of positions along the axis of the Support Stand, and 1 ea. Adjustable Barrel Support Mount (extended)

· Capable of supporting 155 mm gun tubes of up to 31.5 feet (9.6 meters) in length

· Provisions for floor mounting

3.4 System Accessories

The LBIS-155mm UHR system shall include the following accessories:

· Shielded Cables for the LVDT Profiling Sensor and Rigid Delivery Stage

· Uninterruptible power supply (UPS) / Signal conditioner

3.5 Delivery and Setup

3.5.1 Contractor shall provide a layout floor drawing 45 days from delivery schedule.

3.5.2 Delivery schedule shall be no more than 150 days from acceptance contract.

3.5.2 Manufacturer shall provide no less than 3 1/2 days of on-site assistance for system set-up and functional testing

4.0 Quality Assurance and Warranty Provisions

Preservation, packaging and packing shall be in accordance with the manufacturer’s commercial practice Manufacturer shall warrant all components for one year from data of acceptance.