As far as I understand it, a plane's velocity is measured by small tubes, which calculate the velocity of air traveling through them. The velocity of the air traveling through them gives an indication of the velocity of the plane.
What if there were 20 knot winds which were headwinds (opposite to the direction of travel) and a 747 is travelling at 160 knots (according to instruments) and is just about to land with 30 degree flaps. If the air travelling through the tubes is 160 knots, than the actual velocity of the plane is 140 knots surely and the plane would stall and crash.
What do pilots do in these situations? Would they be allowed to land? Would they actually travel faster than 160 knots for safety and land with a greater velocity?
Thanks for any answers
What if there were 20 knot winds which were headwinds (opposite to the direction of travel) and a 747 is travelling at 160 knots (according to instruments) and is just about to land with 30 degree flaps. If the air travelling through the tubes is 160 knots, than the actual velocity of the plane is 140 knots surely and the plane would stall and crash.
What do pilots do in these situations? Would they be allowed to land? Would they actually travel faster than 160 knots for safety and land with a greater velocity?
Thanks for any answers