$\begingroup$ @Fred: I gutes you ask about the washout angle. Complicated. We combined washout with flap twist, so there is a 0.8 degree incidence decrease when the airfoil transitions from the HQ34 to the HQ36 at about 50% of span and then a linear -2° washout to the tip, IIRC.

2015年8月30日 · Here is a pictorial list of planforms. The different planforms are designed to produce the highest lift:drag ratio at various speeds while still being producible.

2015年11月8日 · Disadvantages of wing sweep. Lift curve slope is reduced by the cosine of the quarter chord sweep angle. This means more angle of attack for takeoff, which requires a longer take-off run and a longer landing gear to avoid a tail strike on rotation.

2015年2月23日 · What are the advantages of a forward-swept wing vs. a rearward swept one? Image credit: NASA Image credit: Paul Maritz / Wikimedia

2019年12月24日 · A winglet makes lift like a wing. That's why it's called a wing...let. It's basically a sail (originally they were called "tip sails") designed to exploit the otherwise wasted circulation of air from bottom to top around the tip, placed so that the local flow curling around the tip strikes it at a positive angle of attack.

2021年3月24日 · I'm a beginner in airfoil design. I just came across swept-back wings. There is a point that I couldn't understand that theory. Why is the only perpendicular component of the airflow to the wing(

2.1 A subsonic transport aircraft has a tapered, untwisted sweptback wing with straight leading and trailing edges. The wing tips are straight and parallel to the root chord. In the following, use the data of Appendix C and assume that the airfoil section local aerodynamic center is at the 1 …

2016年3月17日 · Swept wings are beneficial at transonic flight regimes (M=0.8-1.2). At transonic flight regimes there is a drastic increase in drag (CD is more or less constant up until that point) due to the effects of compressibility, which manifest themselves in local sonic regions on the wing (the plane itself can be flying at M=0.78, yet over some …

The sweptback triangular wings of an aircraft have the dimensions given in the figure shown to the right. Find the area of one wing in square feet. The area of one wing is approximately ft 2. (Do not round until the final answer. Then round to one decimal place as needed.)

The sweptback triangular wings of an aircraft have the dimensions given in the figure shown to the right. Find the length marked x in the figure. 1581 67° 850 (Do not round until the final answer. Then round to one decimal place as needed)