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Free-Flight Evaluation of Forebody Blowing for Yaw Control at High Angels of AttackForebody blowing is a concept developed to provide yaw control for aircraft flying at high angles of attack where a conventional rudder becomes ineffective. The basic concept is fairly simple. A small jet of air is forced out of the nose of the aircraft. This jet causes a repositioning of the forebody vortices in an asymmetrical fashion. The asymmetric forebody vortex flows develop a side force on the forebody which results in substantial yawing moments at high angles of attack. The purpose of this project was to demonstrate the use of forebody blowing as a control device through free-flight evaluation. This unique type of testing was performed at the NASA-Langley 30- by 60-foot tunnel. From these tests, it could then be shown that forebody blowing is an effective method of maintaining yaw control at high angles of attack.
Document ID
19970003084
Acquisition Source
Langley Research Center
Document Type
Conference Paper
Authors
Kiddy, Jason
(Maryland Univ. College Park, MD United States)
Date Acquired
August 17, 2013
Publication Date
January 1, 1995
Publication Information
Publication: Technical Reports: Langley Aerospace Research Summer Scholars
Volume: Part 1
Subject Category
Aircraft Stability And Control
Accession Number
97N11849
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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