NASA Technical Paper

NASA Technical Paper
Author: United States. National Aeronautics and Space Administration
Publisher:
Total Pages: 922
Release: 1980
Genre: Aeronautics
ISBN:

Effects of Deflected Thrust on the Longitudinal Aerodynamic Chartacteristics of a Close-coupled Wing-canard Configuration

Effects of Deflected Thrust on the Longitudinal Aerodynamic Chartacteristics of a Close-coupled Wing-canard Configuration
Author: Long P. Yip
Publisher:
Total Pages: 100
Release: 1977
Genre: Aerodynamics
ISBN:

The effects of power on the longitudinal aerodynamic characteristics of a close-coupled wing-canard fighter configuration with partial-span rectangular nozzles at the trailing edge of the wing were investigated. Data were obtained on a basic wing-strake configuration for nozzle and flap deflections from 0 deg to 30 deg and for nominal thrust coefficients from 0 to 0.30. The model was tested over an angle-of-attack range from -2 deg to 40 deg at Mach numbers of 0.15 and 0.18. Results show substantial improvements in lift-curve slope, in maximum lift, and in drag-due-to-lift efficiency when the canard and strakes have been added to the basic wing-fuselage (wing-alone) configuration. Addition of power increased both lift-curve slope and maximum lift, improved longitudinal stability, and reduced drag due to lift on both the wing-canard and wing-canard-strake configurations. These beneficial effects are primarily derived from boundary-layer control due to moderate thrust coefficients which delay flow separation on the nozzle and inboard portion of the wing flaps.

Monthly Catalog of United States Government Publications

Monthly Catalog of United States Government Publications
Author: United States. Superintendent of Documents
Publisher:
Total Pages: 1250
Release: 1979
Genre: Government publications
ISBN:

February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index

Aeronautical Engineering

Aeronautical Engineering
Author:
Publisher:
Total Pages: 708
Release: 1979
Genre: Aeronautics
ISBN:

A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA).