Questions tagged [polar-curve]

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3 votes
2 answers

How does pitch relate to glide angle?

When flying a glider, you have a polar curve. As your speed increases beyond best glide, your glide angle gets steeper. Say you are flying at best glide, you are looking through a specific point in ...
Oliver P's user avatar
  • 133
1 vote
1 answer

Database for NACA airfoil polars [closed]

Is there anywhere where I can find a database of experimental or CFD-obtained NACA series four or series 6 airfoil data? I'd like to have access to a relatively large set of high-fidelity drag polars/$...
Pedro Secchi's user avatar
2 votes
2 answers

Do the polar curves have large differences in takeoff than in landing?

I was wondering if the polar curve has differences in the takeoff due to the smaller extension of the flaps (this is half that in the landing) that changes the AOA for $ C_ {la} = 0 $. In addition, ...
Oscar Espinosa's user avatar
4 votes
1 answer

How do I calculate new minimal speed for a glider when I put water into the tank?

Lets say a glider weights 400kg and has a minimal speed of 70km/h. When it has additionally 100l water, so in total 500kg, what is the new minimal speed? I would argue, that in order to reach the ...
MichaelW's user avatar
  • 241
1 vote
1 answer

Why is polar curve of a glider dependent on flight load?

This is my first question here. I'm just a glider in education phase and not yet a pilot, but because I'm also physicist, I'm interested in some details more than other people. My question is simple:...
MichaelW's user avatar
  • 241
1 vote
1 answer

What does "E" stand for in a polar curve?

In the following polar curve, there is a symbol "E" with the number 33.5 next to it. What does this mean?
Tyler Durden's user avatar
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