Accession Number:

AD0759177

Title:

Experimental Study of the Effect of Subsonic Exhaust Gas Diffusers on the Test Cell Wall and TF39 Cold-Flow Model Engine Exhaust Nozzle Plug and Core Engine Cowl Surface Pressures

Descriptive Note:

Final rept. Jul 1971-Jun 1972

Corporate Author:

ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFB TN

Report Date:

1973-04-01

Pagination or Media Count:

92.0

Abstract:

An experimental investigation was conducted to determine the effects of exhaust gas collectorssubsonic diffusers on engine and test cell surface pressures during tests of high-bypass-ratio front-fan engines in ground test facilities. A one-tenth scale model of a TF39 turbofan engine installed in a one-tenth scale model of Propulsion Development Test Cell J-1 was employed. Engine cowl and plug surface pressure data were recorded during model engine operation with cold air at five simulated power settings without exhaust collector, with exhaust collector, with exhaust collector equipped with a conventional subsonic diffuser, and with exhaust collector equipped with a segmented subsonic diffuser which separately diffused the fan and core engine exhaust jets.

Subject Categories:

  • Thermodynamics
  • Jet and Gas Turbine Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE