Thrust Measurement System for Test Stand 406

This is a sole-source procurement for a Thrust Measurement System for Test Stand 406 at the NASA White Sands Test Facility in Las Cruces, New Mexico, issued by the NASA Shared Services Center under solicitation number 80NSSC26936970Q. The requirement is for a commercial item acquisition governed by FAR Part 12, with Force Measurement Systems, Inc. identified as the exclusive vendor due to the specialized nature of the system and prior dependency on their technology. The system must measure up to 200-lbf in the primary axial direction with an accuracy of 0.15% or better, utilizing dual bridge load cells with a 1.5x overload safety factor and a PT02E-10-6P connector interface. An integrated, remotely controlled pneumatic calibration system using nitrogen at nominal 200 PSIG and maximum 250 PSIG is required, housed within a NEMA 4 enclosure and controlled via a 19-inch rack-mounted computer system with dedicated software. The system must operate reliably in environmental conditions ranging from 0°C to 65°C and 20% to 80% noncondensing humidity, while maintaining functionality under vacuum down to 0.01 psia, with all painted surfaces coated in Sherwin Williams two-part epoxy hypergolic-resistant paint. Performance milestones include final design completion by September 30, 2026, hardware procurement by November 30, 2026, system installation and verification by January 31, 2027, with full delivery and acceptance targeted for March 31, 2027. All welded components must be inspected by a qualified third party per ASTM E1444 (2026), and yield strength data must be provided for every component. Non-conforming items require formal approval from the Project Manager, Project Leader, and Design Review Committee. The Facilities Requirements Document PTO-406-TMS-FRD-001 dated June 5, 2026, governs technical specifications, and any changes must be processed through a Facilities Requirements Change Request. Documentation deliverables include fluid and wiring schematics, CAD models, operation manuals, data reduction equations, and a complete bill of materials, including the Sherwin Williams paint specification. The NASA FAR Supplement Clause 1852.215-84, Ombudsman, applies, and