Why Stall Speed if it's all about Angle of Attack?! 

I'm glad it helped

glad I helped

Of course. It's an excellent app

That's a really good question. I'm going to think through this one here, not sure if it's the correct answer though. When the aircraft is in ground effect, it will experience less drag, and it should also experience a form of cushioning effect, which would mean that it needs less lift to stay level... So I believe that in ground effect the stall speed would be lower as the aircraft does not need as much lift to maintain level over the ground. I could be wrong though

No worries! thankfully most do! This is usually something private pilots tend to not quite understand

glad it helped!

glad it helped!

Glad it was helpful!

thanks :)

well in that case you would descend, no increase in AoA with a reduction in airspeed would mean just that. Look at videos of the hammerhead aerobatic maneouvre. Your speed reaches sub 5kt, but the stall horn never goes off, because the critical angle of attack is never exceeded

glad you liked it!

I'm glad this helped you

thank you for watching. glad it helped

nobody answered you but im suspecting by now in your training you have solved this, in case not..well higher stall speed is not the best when landing usually you want to come in at the POH published speed..all it means when we say higher stall speed is the aircraft needs to fly faster often because of surplus weight so instead of landing say a c172 at 55kts you need to fly in land at maybe 60kts (flying faster to maintain lift because of excess weight in this case)..conversely to land with lower stall speed we tend to add flaps which of course slows the aircraft down due to drag..slow stall speed is when the aircraft stalls with a lower number on your ASI where as a higher stall speed will be a higher number..coming in fast.One more scenario..you going flying heavy for some reason..you have a near miss with another aircraft you quickly had to turn right and you hit a big bank angle which also increases stall speed..double whammy..suddenly you are stalling at 65KTS and you wonder how the hell that happened..well, your stall speed was greatly increased.

Hi Naveen. The equation only applies to when the wing is producing lift. Going beyond the critical angle of attack will result in the stall. At the point the aircraft is no longer producing lift and the equation is therefore not relevant. That's the basis behind this video.

@@MerryfaceAviation actually I think I didn't convey my doubt properly . Let me try to explain once more. If we reduce the speed so much and increase the angle of attack more but still we are within the limit of critical angle of attack . But aircraft moving through air at low speed where is there a chance of boundary layer separation much before the critical angle attack and leading to stall since air won't have enough energy to stay attached to boundary layer?

@@naveenv4227 significant boundary layer seperation occurs at the stall speed. It's a vital part of the definition of the stall. If you keep reducing your speed and maintain close to the highest angle of attack before alpha crit, you'll still produce lift, you just won't be able to maintain level flight.

@@MerryfaceAviation thank you for the clarification. This means a lot.

@@naveenv4227 no sweat

good question! Well. ground effect reduces drag so.... :)

thanks man!