Aeronautics and astronautics – Aircraft structure – Fuselage and body construction
Patent
1998-09-21
2000-10-03
Eldred, J. Woodrow
Aeronautics and astronautics
Aircraft structure
Fuselage and body construction
244 1711, 244 54, B64C 100
Patent
active
061261130
ABSTRACT:
A modular rotary wing aircraft includes a modular cockpit, central frame section, tailboom assembly, landing gear, flight control components and other modular parts so that those parts can be interchanged and interconnected to form differing helicopters to accommodate the requirement of differing tasks. A drive train platform is releasably mounted atop the fuselage formed by the interconnection of the cockpit, central frame section, and tailboom assembly. Modular hydraulic servos, a transmission and rotary propulsion unit, a gas turbine engine, and an engine oil cooling system are releasably mounted to the drive train platform. The drive train platform and all components mounted on it are removable as a unit from the fuselage so that inspection, repair, and maintenance can be performed at bench top level in a controlled environment. A helicopter requiring maintenance or repair spends little time out of service because its drive train platform and all flight-producing components mounted thereon can be replaced with a previously inspected and maintained drive train platform in a short period of time. Savings are substantial because the modular, replaceable drive train platform reduces down time for maintenance procedures and the modularity of the various helicopter parts obviates the need to purchase conventional fully integrated helicopters for different tasks.
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patent: 5562264 (1996-10-01), Bietenhader
patent: 5975464 (1999-11-01), Butan
Eldred J. Woodrow
Smith Ronald E.
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