Accession Number : AD0742376

Title :   Test Bench for High-Altitude By-Pass Engine,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Bokov,K. K.

Report Date : 25 FEB 1972

Pagination or Media Count : 7

Abstract : The invention pertains to the area of bench-testing of ducted fan engines under conditions close to those of flight. Test benches for high-altitude turbojet engines, including by-pass engines, consist of exhaust diffuser and pressure chamber with engine being tests, a turbo-cooling unit for supplying air to the engine under pressure and temperature corresponding to conditions of flight, and an exhaust unit with a cooler, connected to the pressure chamber exhaust diffuser with a line for removing and cooling exhaust gases. In testing by-pass engines with high by-pass ratio it is necessary to supply the engine with a considerably large volume of air than when testing a single-pass engine or by-pass engine with decreased by-pass level. Great technical difficulties are encountered in cooling and drying large volumes of air supplied to the bench and during the removal of the exhaust gases while ensuring the rarefaction corresponding to the simulated altitude of flight. (Author)

Descriptors :   (*TEST EQUIPMENT, *PATENTS), (*TURBOJET ENGINES, TEST EQUIPMENT), DUCTED FANS, AIR, COOLING, DRYING, EXHAUST SYSTEMS, CAPTIVE TESTS, USSR

Subject Categories : Test Facilities, Equipment and Methods
      Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE