2015年9月19日 · The Boeing Bird of Prey is indeed a unique aircraft, wahich was an internal project rather than an X-Project funded by the government. It was primarily used as a technology demonstrator for low observable technologies.

2017年3月29日 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

2015年10月16日 · A good example is the Boeing Bird of Prey, where the chines produced (vortex) lift and thus a stabilizing force. The forces acting on the longitudinal axis of the aircraft look something like this, leading to a statically stable aircraft without any lifting surface except the wing.

What is the purpose of a dorsal fin such as on the Boeing 737? I've noticed that the 737 has a rather unusual vertical stabilizer, with an extension at the front. Is the 737 the only plane equipped with such a vertical stabilizer, and what is its purpose?

2024年2月25日 · I noticed this picture yesterday of the Bird of Prey and wondered about the wing design and what advantages would come with this unique wing design compared to other aircraft? Source:(www.wired.com)

2017年7月8日 · The downward pointing wingtips roll and yaw the plane into a cross wind gust, whereas the "classic" upward pointed vertical stabilizer design will tend to roll away from the gust, especially if the gust gets "under" the windward wing. For a very light model (or bird), the result is getting rolled and pushed downwind. Not a good day for that ...

2016年7月29日 · The idea behind this design seems to be that the principal cause of lift of a wing is that the top has a larger area than the bottom, so if we substitute a top surface with a different shape but the same area, we will still get similar lift.

2022年2月21日 · Is this an accurate description of the design process for modern jet airliners? If not, why not? What other factors come into play in determining the choice of dihedral angle?

Several pictures of the Concorde taking off, show a cloud of water droplets (fog) above the wings. Like this: I assume the fog is created due to low pressure over the wings. But, doesn't the size

2015年8月27日 · The purpose of the rudder is to control the heading of the aircraft. It turns the aircraft by creating an aerodynamic moment about the vertical axis of the aircraft.