Questions tagged [airplane]

A heavier-than-air fixed-wing aircraft propelled by one or more engines.

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42
votes
10answers
12k views

Is it possible to fly backward if you have really strong headwind?

Is it possible to fly a plane backwards if you have a really really strong headwind? I mean when you are aloft, you have positive airspeed and airflow over the wings but you have negative ground speed....
14
votes
3answers
1k views

What is a biplane propeller and how efficient is it?

Lazair ultralight series II used biplane props to absorb more power from the engine....so my question is what really is a biplane propeller and are they efficient in comparison to a four bladed prop?
0
votes
5answers
534 views

Could a helicopter fly like a plane this way?

Could a wing be added to a helicopter to allow the entire craft to tip 90 degrees forward allowing it to fly faster like a plane using a fixed wing and leaning into the wing for lift? I understand ...
17
votes
7answers
6k views

Why are airplanes described as the safest method of transportation? [closed]

I will have my first flight tomorrow. It is my first time that I get into an airplane, and by the time am writing this post, I am feeling anxious and stressed a lot. I even don't talk to anyone as it ...
24
votes
5answers
3k views

Why does airflow separate from the wing during stall?

What causes the airflow separation from the airplane wing, that triggers a stall? To be more precise, what is the detailed explanation of the physics for why flow separation occurs at certain speeds ...
2
votes
2answers
1k views

Is airfoil thickness proportional to drag coefficient?

Does increase in the thickness of a camber airfoil mean more drag will be produced? Why do slow flying planes have thick airfoils when it will just slow them down even more?
-9
votes
1answer
259 views

What makes Airplane Fly? Does Bernoulli Principle still Reliable? [duplicate]

Even the earliest airplanes did not apply Bernoulli principle. The wings were flat, and it worked. An honest engineer admitted that 'take off' is a mystery. Is there alternatives for Bernoulli ...