Accession Number : ADD002619

Title :   Engine Mounting Tension Tie System.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Cook,William H

Report Date : 19 Apr 1976

Pagination or Media Count : 11

Abstract : The patent application relates to a system for adapting an under-wing mounted jet engine for over-wing mounting by adding four tension members, two on each side, to the mounting installation at a location below the thrust line. The tension in these members replaces in part the fan duct blow-off loading and their location below the thrust line introduces bending moments which counter those causing the engine to deflect. Bleed air which varies with the engine thrust is used to energize the tension tie members in the form of pneumatic springs to allow for thermal and other strains and to accommodate engine thrust variations.

Descriptors :   *Turbofan engines, *Mounting brackets, Bending moments, Bleed systems, Installation, Wings

Subject Categories : Aircraft
      Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE