MIL-DTL-32022

Abstract

This specification covers the requirements for the manufacture and acceptance of the GGU-16/A, GGU-17/A, GGU-18/A, GGU-19/A and GGU-20/A Generator, Gas, Fire Extinguishers, referred to herein as "gas generators". <b><u>Intended Use:</u></b> These gas generators are intended to be part of the Wing Fire Protection System installed in the MV-22, CV-22 and HV-22 variant aircraft. They are part of an automatic fire detection/suppression system designed to extinguish a fuel fire in the V-22 wing area composed of the midwing area, aft coves, tip rib bays and areas in-board of the wing feed tanks. Upon detection of a fire by any of the optical detector the generators can be singly discharged or discharged as part of an inter-connected system. The Wing Fire Protection Systems are only used in military aircraft, therefore the cartridge has no commercial application. In the event of a major change to facilities (new facility, transfer to new location, etc) or large turn-over in staff, the government may require the performance of the thermal-shock cycling and vibration test on the propellant to ensure it meets the requirements and performance of the propellant as qualified. These gas generators were developed to function in specific V-22 midwing area bays. The requirements addresses air flow into and out of these bays. Of major importance is the over pressure limits of each bay. Changes to the gas generators resulting in increased performance, faster burn times or greater pressure out put could result in the structural failure of wing components with the potential for catastrophic loss of the aircraft. Any changes effecting the ballistic functions of these gas generators require the approval of Naval Air Systems Command, AIR-4.3.5 and PM-275, and the Bell-Boeing Joint Program Office. <br>