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Most wheels are not "spun up" prior to landing, and go from zero rpm to that of the plane's touchdown speed almost immediately upon contact with the ground.
Before and after - yes, but not during.
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What is the vetical ground reaction on the main landing gear assemblies of a Boeing 747 aircraft when landing?http://wiki.answers.com/Q/What_is_the_vetical_ground_reaction_on_the_main_landing_gear_assemblies_of_a_Boeing_747_aircraft_when_landing&src=ansTT
· Conventional landing gear uses wheels to bear the weight of the plane on the ground. Planes use unconventional landing gear when they're not going to be landing on flat ground. They use pontoons to land on water and skis to land on snow.
Basically, Helicopters Landing is of Two Types, One is Skid Landing, Wheel Landing. Skid Landing is used for Army, Civil, Ambulance etc.. This type of landing will be on Ground. Wheel Landing is for Navy, where landing will be on Ships.
During landing, the purpose is to slow down the aircraft's ground speed as slow as you can without it stalling. You want to maintain Lift, not necessarily get more lift. At higher speeds, the aircraft has plenty of Lift. However during landing, the speed is slower and the angle of attack is increased to provide more Lift at lower speeds.
yes ye they do
Actually it does BUT it also comes down from the clouds. Now A positive charge is sent up when the negative charge is sent down. They meet but we only see the one sent up because it is slower.
It was a planned water landing. NASA did not have the ability to do a landing on solid ground.
The distance the aircraft travels on the ground before lifting off, or the same when landing.
If the electrical charge is in a rod, for example, just ground it. Make it touch the ground, or something that is touching the ground.