Operating and Performance Characteristics of a Duct Burning Turbofan Engine with Variable Area Turbines.

Abstract

Several variable geometry/variable cycle concepts for aircraft gas turbine engines are being investigated by the industry in search for new propulsion systems with potential operating and performance benefits over conventional engines. This paper describes some of the operating and performance characteristics of one such concept in a fighter application: a separate flow duct burning turbofan with variable area turbines. An existing cycle performance and component matching simulation of a fixed turbine turbofan was extensively modified to incorporate the variable geometry. Data was generated for a representative fighter type cycle at several important flight conditions. Comparison was made to the fixed turbine version of the cycle. Installation drags were not calculated. (Author)

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1978
Accession Number
ADA061026

Entities

People

  • Edward K. Norvaisis

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Aircrafts
  • Engine Components
  • Exhaust Nozzles
  • Fighter Aircraft
  • Gas Turbines
  • High Pressure
  • Mach Number
  • Propulsion Systems
  • Sea Level
  • Simulations
  • Thermodynamic Properties
  • Turbine Components
  • Turbines
  • Turbofan Engines
  • Work Functions

Readers

  • Aerospace Engineering