aerodynamic center (AC) Moment about the aerodynamic center is constant with angle of attack. Aerodynamic center does not move with angle of attack. The aerodynamic center is a point on the wing chord that results in a constant moment when the wing angle of attack is changed. An AC lies ap...
Aerodynamic study of a wing-fuselage combination employing a wing swept back 63 degrees : characteristics throughout the subsonic speed range with the wing cambered and twisted for a uniform load at a lift coefficient of 0.25No Abstract AvailableJones, J Lloyd...
(西北工业大学翼型研究中心,陕西西安710072)0ptimumAerodynamic esignof ransonicwingBasedonAdjointEIuations ethodYANGXu-dong, IAOZhi-de(TheCenterforAerodynamics esignandResearch,NorthWesternPolytechnicalUniversity,Xi/an710072,China)摘要:设计状态的机翼气动力特性是设计人员最为关心的指标,应用控制理论设计方法进行...
The changes in the mean location of center of pressure in the spanwise and chordwise directions resulting from the corrugation are no more than 3% of the wing chord length. The possible reason for the small aerodynamic effects of wing corrugation is that the wing operates at a large angle of...
The results showed that the wing corrugations of hovering insects at typical travel amplitudes and angles of attack reduce the average lift by approximately 5%, increase the average drag by approximately 3% and barely change the location of the center of pressure. Experiments and calculations [ 13,...
Aerodynamic Forces and Moments on a Large Ogive-Cylinder Store at Various Locations Below the Fuselage Center Line of a Swept-Wing Bomber Configuration at ... "A supersonic wind-tunnel investigation on store interference has been conducted in the Langley 4- by 4-foot supersonic pressure tunnel ...
NASA Langley Research Center, Hampton, VA, United States (2007) https://ntrs.nasa.gov/citations/20070010579 Google Scholar [13] J.E. Ffwocs Williams, D.L. Hawkings Sound generation by turbulence and surfaces in arbitrary motion Philos. Trans. R. Soc. Lond. Ser. A, Math. Phys. Sci.,...
(β = 20°) also shown. Aerodynamic forces are averaged over the whole wing for a flapping angle ofβ = 5° and considered to be acting at the wing’s center of mass (b). Representation of the wing as a series of cross-sections for each of the six flapping angles ...
General theory of aerodynamic instability and the mechanism of flutter, NACA Technical Report 496, Aeronautics General theory of aerodynamic instability and the mechanism of flutter. : NASA. Ames Res. Center; 1979.Theodorsen, T., 1935. General Theory of ... T Theodorsen 被引量: 33发表: 1979...
Each propulsor is made in form of horizontal hollow cylindrical housing with reduction gear mounted in center; reduction gear has front and rear horizontal shafts on which front and rear groups of variable-pitch propellers is secured. Air propellers are mounted at some distance from one another....