3 votes

Y force of airplane in ground effect

Ground effect happens because the air cannot flow around the airplane as it would in free flight. The impenetrable ground gets in the way, and using the mirror image in CFD is done only to create an ...
Peter Kämpf's user avatar
1 vote

Airspeed indication in a forward slip C172?

In a slip, the pitot tube will not be directed into the relative wind, and so the pitot pressure will be lower. This will tend to cause the airspeed to read slower than your actual airspeed. A ...
Chris's user avatar
  • 14.6k
1 vote
Accepted

Simultaneous yaw damping and sideslip control of aircraft with rudder?

It's all a single activity. Yaw dampers provide a single function; provide an active automatic rudder input to keep the airplane aligned in the airflow when the airplane's static yaw stability, its &...
John K's user avatar
  • 130k
1 vote

Forward Slip - Which speed to maintain?

Vfe is quite fast to be flying on a landing approach slipping or not, although I suppose there's nothing stopping you from doing that if you need to dive that steeply. You still end up with excess ...
John K's user avatar
  • 130k
1 vote

Y force of airplane in ground effect

The mirror image won't cancel it out. To a first order, I would assume it is unaffected. I haven't ever run a detailed analysis to see if there was an effect, but I would be surprised to see one that ...
Rob McDonald's user avatar
  • 9,286
1 vote

How does conical camber decrease roll due to sideslip?

... using my desert cooler as a wind tunnel That's the spirit! Let's first evaluate the degrees sweep of the B-58 Hustler and F106 Delta Dart vs the NACA paper. The former are 60 degrees sweep and ...
Robert DiGiovanni's user avatar
1 vote

How does conical camber decrease roll due to sideslip?

I was reading Ray Whitford's Design for Air combat and came upon a passage that said that on the SR-71 conical camber "gives a useful reduction in the otherwise very high rolling moment due to ...
quiet flyer's user avatar
  • 22.3k

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