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The testing of a titanium matrix composite (TMC) F-15 nose gear outer cylinder is discussed. Two cylinders were fabricated. An entire F-15 nose gear was assembled using the first cylinder. This test gear underwent static structural tests to three critical loading conditions and functional evaluations including load-stroke, rebound snubbing, jig drops and strut stroke cycling. The TMC cylinder successfully completed both groups of testing with no signs of structural or functional degradation.

The Hydraulic Piping System of the DC-10 Airplane represents a break with the Military Standard tubes and fittings used for the previous quarter century. This paper summarizes the reasons for the selection of ARMCO 21-6-9 stainless steel tubing over several other candidate materials. Factors of weight, cost, availability and reliability were important, as well as compatibility with the various joining processes contemplated. Perhaps even more important were ease of fabrication of tube segments and assemblies, installation, and field repair. The McDonnell Douglas material specification is summarized, with emphasis on tube inspection requirements. The tubing is giving excellent service, and was introduced into production with relatively few problems.

McDonnell Aircraft Company (MCAIR) is currently conducting the STOL/Maneuver Technology Demonstrator (S/MTD) Program for the Air Force's Flight Dynamics Laboratory (AFFDL) under Contract F33615-84-C-30I5. This program involves the modification of an F-15B. S/N 71-290, to incorporate the following advanced technologies: Two dimensional, thrust vectoring/thrust reversing exhaust nozzles (2D TV/TR) An integrated flight/proputsion control (IFPC) system Modified rough field landing gear An advanced pilot/vehicle interface (PVI) system which includes an on-board landing guidance display system