NDLI: Vector thrust induced lift effects for several ejector exhaust locations on a v/stol wind tunnel model at forward speed

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Vector thrust induced lift effects for several ejector exhaust locations on a v/stol wind tunnel model at forward speed

Content Provider	NASA Technical Reports Server (NTRS)
Author	Sharon, A. D.
Copyright Year	1975
Description	The results and analysis of aerodynamic force data obtained from a small scale model of a V/STOL research vehicle in a low speed wind tunnel are presented. The analysis of the data includes the evaluation of aerodynamic-propulsive lift performance when operating twin ejector nozzles with thrust deflected. Three different types of thrust deflector systems were examined: 90 deg downward deflected nozzle, 90 deg slotted nozzle with boundary layer control, and an externally blown flap configuration. Several nozzle locations were tested, including over and underwing positions. The interference lift of the nacelle and model due to jet exhaust thrust is compared and results show that 90 deg turned nozzles located over the wing (near the trailing edge) produce the largest interference lift increment for an untrimmed aircraft, and that the slotted nozzle located under the wing near the trailing edge (in conjunction with a BLC flap) gives a comparable interference lift in the trimmed condition. The externally blown flap nozzle produced the least interference lift and significantly less total lift due to jet thrust effects.
File Size	3108412
Page Count	39
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19760005932
Archival Resource Key	ark:/13960/t7bs3k454
Language	English
Publisher Date	1975-08-01
Access Restriction	Open
Subject Keyword	Aerodynamics V/stol Aircraft Thrust Vector Control Nozzle Thrust Coefficients Interference Lift Wind Tunnel Models Aerodynamic Forces Aircraft Configurations Optimization Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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