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aerodynamics - When leaving ground effect, why is there a nose-up . . . The aircraft leaving ground effect will Require an increase in AOA to maintain the same CL Experience an increase in induced drag and thrust required Experience a decrease in stability and a nose-up change in moment Experience a reduction in static source pressure and increase in indicated airspeed I'm having a hard time understanding the
What is the indicated airspeed necessary to exit ground effect on takeoff? In this video the winds change from a headwind to a tailwind during takeoff and the plane is not able to leave ground effect The pilot ultimately aborts the takeoff The pilot was able to achieve about 60 knots indicated airspeed while in ground effect but the plane was not able to accelerate beyond that Looking at the specs on the Cessna 172, which was the airplane in the video, 60 knots is
Why is cabin pressure increased above ambient pressure on the ground . . . The variations in both air supply and air release, due to the aircraft leaving or entering the ground effect In particular this ground effect would force air into the cabin through the forward outflow valve when the angle of attack is increased for takeoff rotation or landing flare out
How high does the ground effect last? - Aviation Stack Exchange This should demonstrate that most of the ground effect happens when the ram pressure below the wing builds up Once the trailing edge is less than half the wing chord from the ground, this part of ground effect kicks in, and the aircraft sees a significant reduction in drag
Why is indicated airspeed rather than ground speed used during the . . . The takeoff speed is the speed at which you will have enough lift to get the airplane off the ground at the angle of attack that the airplane will have post-rotation So, for a given aircraft at a given weight, wing area, post-rotation angle-of-attack, and lift curve, you will be able to take off at a particular dynamic pressure
Why is carburetor heat use discouraged on the ground? You'll probably find that during your flight training you'll end up leaving the carb heat on while on the ground for short periods This happens a lot during landing operations when you are instructed to have carb heat on (my instructor taught me mid-field downwind, "Seat Belts, Gear, Fuel Selector, Carb Heat, Mixture, Prop, Power")
What is ground effect? - Aviation Stack Exchange This "cushion-effect" explanation is actually quite correct The pressure which lifts the airplane is not only created by accelerating air downwards, but also by ram pressure This effect disappears once the wing is far enough from the ground
What are the effects of crosswind on takeoff? - Aviation Stack Exchange In such cases the pilot needs to use the aelirons to counteract that effect Note that any upgust can have a similar effect For example, when landing on a windy day, the wind will hit the ground and move upwards creating upgusts These can hit your wing and flip you over, if the aircraft is light
When should the throttle be closed on a C172 while landing? Controlling the aircraft in ground effect during slow flight While students are taught slow flight techniques at altitude, the standard exercise does not provide the feel of the airplane in ground effect Maintaining directional control, runway centerline alignment and proper attitude in a crosswind during the roundout
aerodynamics - What causes the dead band phenomenon during takeoff on . . . Based on my understanding, this "dead band" effect during takeoff is attributed to the combination of downwash off the wings and ground effect phenomena, resulting in diminished elevator effectiveness Is this explanation accurate? Furthermore, does this dead band phenomenon occur to the same extent in other Boeing aircraft or similar narrow or wide-body commercial aircraft?