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1 vote
1 answer
123 views

Mechanics of the "airplane" thrown at angle to the horizon

Good day! I am interested in the solution of the following problem, could you please help me. Suppose that we have some solid airplane. We throw this airplane at some angle $\theta$ to the horizon ...
Liubimov Oleksandr's user avatar
1 vote
0 answers
33 views

PI controller - output calculation [closed]

The propeller of an airship is connected to a DC motor. The motor is being controlled using a PI controller. The PI controller has a proportional gain of Kp = 2, and an integral gain of Ki = 0.5, and ...
puma's user avatar
  • 31
0 votes
1 answer
63 views

Defining the change in direction due to wind

My question: Which force vector (A, B, C, or D) represents the APPROXIMATE direction in which the boat is travelling as a consequence of the wind? My approach: I looked for which vector combination ...
Englishterian's user avatar
1 vote
1 answer
43 views

How would I calculate the speed passengers 'jump' based on the speed and displacement of a plane during turbulence?

I read recently that if I'm in a plane that hits turbulence, the plane might only move 1 to 20ft. However, due to the speed that plane is travelling at (say cruising at 550mph). The passengers in the ...
Matthew Haworth's user avatar
3 votes
1 answer
152 views

How does quadcopter's battery capacity relate to it's maximum flight time?

Suppose that we have a quadcopter weighing 3 kg (without a battery) and a battery (let it be Li-Ion type) weighing 2 kg. With this battery our quad can hover for 20 minutes until the battery runs flat....
ogurets's user avatar
  • 139
4 votes
1 answer
2k views

Relative motion of airplane in the wind [closed]

I have a relative motion problem in which I cannot get my answer to match the book answer. The question is: An airplane has to travel $189\, \mathrm{km}$ due east to point $B$ from point $A$. It ...
user's user avatar
  • 316
-1 votes
3 answers
3k views

Forces involved in a climbing jet aircraft

I have a problem with which I need help. The question is: A jet aircraft is climbing at an angle of $45^\circ$ above the horizontal axis and is accelerating at $4.5~\rm\frac{m}{s^2}$. What is the ...
user23100's user avatar
3 votes
3 answers
439 views

How to compute the speed necessary for an airplane to fly?

I give some physics lessons to a friend. She asked me a question that I am unable to answer. Could you help me ? A plane has a weight of $2\times10^6$kg. The surface of the wing is $1200 \text{m}^2$. ...
AnSy's user avatar
  • 862
3 votes
3 answers
16k views

Flying a toy helicopter inside an accelerating train [duplicate]

Scenario: You ride in a train, you have this helicopter toy. The train is not yet running when you flew your helicopter on a constant altitude (say 1 meter above the train's floor). Question: What ...
Angelo's user avatar
  • 47