Accession Number:

ADA053361

Title:

Variable Cycle Engine Evaluations for Supersonic V/STOL Fighters. Phase II and III Technical Report.

Descriptive Note:

Final rept. Jun 75-Mar 78,

Corporate Author:

MCDONNELL AIRCRAFT CO ST LOUIS MO

Personal Author(s):

Report Date:

1978-04-01

Pagination or Media Count:

153.0

Abstract:

Variable cycle engines VCE have been evaluated using advanced VSTOL fighter designs. The VCE payoffs were assessed in terms of total weapon system cost effectiveness and results indicate that they offer potential benefits in supersonic VSTOL fighters. A systematic engineairframe evaluation procedure was developed and used to assess interactions for advanced engine concepts in L LC aircraft designs. The evaluation procedure provdies a rapid and inexpensive technique for evaluating engine concepts considering a large matrix for engine and airframe design and sizing variables. The procedure was used to establish a parametric data base using both fixed cycle turbofans and variable geometry turbine turbojets. Specific engineairframe designs were then selected for detailed comparisons. Engineairframe design evaluations were also conducted using a variable cycle turbofan engine capable of being used with both L LC and LC aircraft. These aircraft designs were compared to the fixed cycle turbofan and variable geometry turbine turbojet aircraft designs in terms of TOGW, performance, life cycle cost and operational flexibility. Author

Subject Categories:

  • Attack and Fighter Aircraft
  • VSTOL
  • Jet and Gas Turbine Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE