PPRuNe Forums - View Single Post - Air Asia Indonesia Lost Contact from Surabaya to Singapore
Old 7th Feb 2015, 11:46
  #3089 (permalink)  
Bleve
 
Join Date: Jun 2006
Location: Terra Firma
Posts: 224
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Pushing Over

I know that there are a LOT of posts as far (agreement is probably going too far) to the effect that pushing forward, or anything less than 1.00 positive G is uncomfortable, unfamiliar, non-intuitive, and frowned on by management. But it seems pretty clear that poster opinion agrees that there are circumstances when this action is appropriate and even immediately mandatory.
Aerodynamics 101: The stall speed at 0 'g' is 0 kts. Therefore if you have the elevator authority to push to zero 'g' you will unstall the wing at any airspeed. The nose will drop, the airspeed will increase and when comfortably above Vs1g, gently roll wings level and raise the nose to the horizon. If you don't have elevator authority to push forward enough to unstall the wing, ROLL the aircraft (90°+ bank if need be) and convert that pitching 'up' moment away from the horizon into a pitching 'up' moment across (or down from) the horizon to get the nose to drop and airspeed to increase.
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