With the design of the GAAS passing the 40 year mark, MERC was tasked to analyze all of the components of the system and determine replacement strategies for those parts that are obsolete. When suitable substitutes for components were not procurable, MERC re-engineered the subcircuits with modern technology and qualified the changes.
l Applied Mechanics Mechanical Design Information Systems Reliability and Human Engineering Electronic Systems Applied Systems Logistics Services
Electronic Systems Division © 1987-2010 Mercer Engineering Research Center 135 Osigian Blvd. • Warner Robins, GA 31088 info@merc-mercer.org • www.merc-mercer.org • 478.953.6800 C-5 Go-Around Attitude Subsystem Computer Presently, MERC is updating the Benchtop Reconfigurable Automatic Tester (BRAT) software for testing the GAAS circuit cards so that the repair facility can use the BRAT instead of an old dedicated tester that is also difficult to maintain. To prove the validity of the parts analysis and the technical data package, MERC built two new GAAS computers from the chassis up and passed all acceptance tests. C-5 Go-Around Attitude Subsystem Computer The GAAS project consists of parts analysis, sourcing, component redesign and general re-engineering as needed to improve the reliability of the C-5 Go-Around Attitude Subsystem computer. The two main functions of the GAAS computer are to compute angle of attack information for use in flight decisions to include producing a stall warning providing pitch commands to the pilots during a go-around.C-5 Go-Around Attitude Subsystem ComputerC-5 Go-Around Attitude Subsystem ComputerC-5 Go-Around Attitude Subsystem ComputerC-5 Go-Around Attitude Subsystem Computer