F/A-18A inlet flow characteristics during maneuvers with rapidly changing angle of attack / Andrew J. Yuhas [and three others].

Format:

Book

Government document

Author/Creator:

Yuhas, Andrew J., author.

Contributor:

Analytical Services & Materials, Inc.

GE Aircraft Engines (Firm)

NASA Dryden Flight Research Center, issuing body.

United States. National Aeronautics and Space Administration, sponsoring body.

Series:

NASA technical memorandum ; 104327.

NASA technical memorandum ; 104327

Language:

English

Genre:

NASA Technical Memorandum

Physical Description:

1 online resource (18 pages) : illustrations

Place of Publication:

Edwards, California.: National Aeronautics and Space Administration, Dryden Flight Research Center, June 1997.

Summary:

The performance and distortion levels of the right inlet of the F/A-18A High Alpha Research Vehicle were assessed during maneuvers with rapidly changing angle-of-attack at the NASA Dryden Flight Research Center, Edwards, California. The distortion levels were compared with those produced by current inlet-engine compatibility evaluation techniques. The objective of these analyses was to determine whether the results obtained for steady aerodynamic conditions were adequate to describe the inlet-generated distortion levels that occur during rapid aircraft maneuvers. The test data were obtained during 46 dynamic maneuvers at Mach numbers of 0.3 and 0.4. Levels of inlet recovery, peak dynamic circumferential distortion, and peak dynamic radial distortion of dynamic maneuvers for a General Electric F404-GE-400 turbofan engine were compared with estimations based on steady aerodynamic conditions. The comparisons were performed at equivalent angle-of-attack, angle-of-sideslip, and Mach number. Results showed no evidence of peak inlet distortion levels being elevated by dynamic maneuver conditions at high angle-of-attack compared with steady aerodynamic estimations. During sweeps into high angle-of-attack, the peak distortion levels of the dynamic maneuvers rarely rose to steady aerodynamic estimations. The dynamic maneuvers were shown to be effective at identifying conditions when discrete changes in inlet behavior occur.

Notes:

Title from title screen (viewed April 5, 2016).

"June 1997."

"Under NASA Dryden Flight Research Center contract NAS 3-26617."

"Performing organization: Analytical Services & Materials, Inc., Edwards, California [and] General Electric Aircraft Engines, Cincinnati, Ohio"--Report documentation page.

Other Format:

Microfiche version: F/A-18A inlet flow characteristics during maneuvers with rapidly changing angle of attack

OCLC:

703661524