89042 A-2012

Body effect on wing angle of attack and pitching moment at zero lift at low speeds


 

 

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标准号
89042 A-2012
发布日期
2012年09月01日
实施日期
2012年12月05日
废止日期
中国标准分类号
/
国际标准分类号
/
发布单位
ESDU - Engineering Sciences Data Unit
引用标准
28
适用范围
ESDU 89042 gives simple empirical methods of predicting the change in zero-lift angle and in pitching moment at zero-lift due to adding a fuselage of approximately circular section to a swept@ cambered and twisted wing. The effects of wing height and of body asymmetry in the aircraft plane of symmetry are considered. It was found that the effects of neither Mach number below 0.4 nor Reynolds number was important. Sketches compare both the predicted changes and the values for the wing-body combination with experimental results used in the correlation@ and it is found that zero-lift angle of attack is predicted to within 0.3 degrees and pitching moment coefficient (based on equivalent (gross) wing area and aerodynamic mean chord) to within 0.1. A worked example illustrates the use of the method@ using ESDU 87031 and 87001 to predict wing alone values of zero-lift angle of attack and pitching moment respectively@ although of course experimental values could be used if available. A computer program of the method is provided as ESDUpac A8942.




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