All Questions
Tagged with aircraft classical-mechanics
12
questions
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253
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What is the difference between a kite and a glider?
A kite and a glider, both fly without an engine. If both are unpowered, then what is the difference between a kite and a glider? Are all gliders kites? Or are all kites gliders? How do they differ? ...
- 177
2
votes
0
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126
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Drag and lift as a function of speed
Assuming turbulent flow, the drag force $F_\mathrm d$ and the lift force $F_\mathrm l$ are usually given in terms of the following equations
$$ F_d\, =\, \tfrac12\, \rho\, u^2\, c_d\, A $$
$$ F_l\, =\...
- 3,543
2
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2
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Is a square tube more resistant to bending than a round tube?
In considering tubular forms for aircraft construction, I am reasoning that a square form (or I-beam) would be more resistant to bending (if the load is directly perpendicular and in the plane of the ...
-1
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2
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118
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When plane crashes
Could it be true that when the plane is falling to crash, one should start to jump. If the moment the plane crashes, you are in the air then, you are not affected by the momentum. That is very ...
- 113
2
votes
1
answer
384
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Motion of water droplets on airplane window during takeoff
I observed this while on a flight that took of shortly after it had rained, but could not understand why it happened.
The windows of the aircraft had drops of water on the outside. As the flight ...
- 123
2
votes
2
answers
2k
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Whats the anti-torque mechanism in horizontal take-off aircraft?
In most helicopters there is the anti-torque tail rotor to prevent the body from spinning in the opposite direction to the main rotor.
What's the equivalent mechanism in horizontal takeoff single ...
- 558
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3
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Aircraft Level Flight Trajectory
An aircraft climbs to 15000 feet and enters 'level flight' phase. My basic knowledge of physics says that forces on the aircraft at this time are balanced - as seen in this diagram.
Would an aircraft ...
- 13
3
votes
2
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Turning an airplane - coordinated turn and inclinometer ("the ball")
I'm flying, turning in a stable orbit, i.e. at constant level with a constant angle of bank, at constant airspeed, with a constant radius of turn, as in the picture below:
I am flying along the black ...
- 178
14
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7
answers
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What will happen if a plane trys to take off whilst on a treadmill?
So this has puzzled me for many a year... I still am no closer to coming to a conclusion, after many arguments that is. I don't think it can, others 100% think it will.
If you have a plane trying to ...
- 305
8
votes
8
answers
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Turning an Airplane. What actually causes the circular motion in a banked (roll) turn?
Basically I'm wondering if this is correct. Which essentially says that you need a torque to get the nose of the craft to turn and that this is provided by the rear tail surfaces.
After trying to ...
- 329
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3
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Why aren't stratospheric balloons compressing their helium to descent? [closed]
I can't find a reference of a working stratospheric balloon mounted with a compressor to control its altitude. Is there a big physical difficulty (such as compressor weight/power ratio, or power ...
- 284
2
votes
2
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How fast can toy helicopters change the turning direction of their propellers?
I saw someone do some tricks with a toy helicopter where he would turn it upside down for a while and it would still stay in the air. I thought it should have crash or at least not fly for very long ...
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