Exploratory Study of Aerodynamic Loads on a Fighter-Bomber at Spin Entry

An exploratory investigation was performed to examine the distribution of forces on a modern fighter-bomber aircraft at incipient spin entry. The flight condition considered is a high angle of attack (in the range of 30 to 40 degrees) at zero sideslip. The loads of principal interest are side force,...

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Bibliographic Details
Main Authors: Spangler,Selden B, Nielsen,Jack N
Format: Report
Language:English
Subjects:
AERODYNAMIC FORCES
AERODYNAMIC LOADING
Aerodynamics
ANGLE OF ATTACK
F-5 aircraft
FIGHTER BOMBERS
FLOW SEPARATION
POTENTIAL FLOW
SPINNING(MOTION)
VORTEX SHEDDING
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Summary:An exploratory investigation was performed to examine the distribution of forces on a modern fighter-bomber aircraft at incipient spin entry. The flight condition considered is a high angle of attack (in the range of 30 to 40 degrees) at zero sideslip. The loads of principal interest are side force, yawing moment and rolling moment. The general approach involves the use of aircraft and missile nonlinear, potential flow, vortex interference methods to examine the loads on the nose, wing-body, afterbody, and tail. Calculations were made for the F-5 configuration because of the availability of static force data at flight conditions of interest.