New semiempirical method for computing nonlinear missile aerodynamics

Autor:	T. Hymer, L. Devan, Frank G. Moore
Rok vydání:	1993
Předmět:	Engineering Wing Angle of attack business.industry Mathematical analysis Aerospace Engineering Aerodynamics Missile Space and Planetary Science Naval Surface Warfare Center Pitching moment Aeroprediction Aerospace engineering business Center of pressure (fluid mechanics)
Zdroj:	Journal of Spacecraft and Rockets. 30:696-706
ISSN:	1533-6794 0022-4650
DOI:	10.2514/3.26375
Popis:	A new semiempirical method has been developed to predict normal force, pitching moment, and center of pressure on missile configurations up to angles of attack of 30-deg and 0-deg roll angle. The method is based on linear theory and slender body techniques at low angle of attack and uses wind-tunnel data to derive nonlinear angle-of-attack corrections as angle of attack increases. The new improved theories include body alone, wing alone, and body-wing and wing-body interference. Although the new theory is databased, simple analytical formulas are derived that allow general use of the techniques. Comparison with the linearized approaches used in the former Naval Surface Warfare Center Dahlgren Division aeroprediction code shows significant reductions in errors of aerodynamics above about 5- to 10-deg angle of attack. Limited comparisons to other state-of-theart engineering codes show the new theory to be as good as or better than anything known to be available for computing planar aerodynamics up to 30-deg angle of attack.
Databáze:	OpenAIRE
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