Questions tagged [glide-ratio]
The ratio of the forward distance traveled to the vertical distance an aircraft descends when gliding without any power.
7
questions with no upvoted or accepted answers
2
votes
0
answers
75
views
Size of speed brakes for glider
I have a concept glider and I am trying to calculate the required speed brake area. The clean glide ratio is currently 30, and with speedbrakes, I am aiming at reducing it to something around 7.
I ...
- 133
2
votes
0
answers
2k
views
What is the glide ratio of a DA42?
I was looking for the best glide speed of a DA42 with both engines out, but it seems it's not in the POH. In the emergency checklist, it only mentions a speed of 85 knots to maintain on final approach ...
- 171
1
vote
0
answers
120
views
How much thrust can a balloon generate with wings?
I have heard that some balloons have been made with wings, angled such that they generate some forward thrust during the ascent. Balloons can also theoretically generate thrust with wings during a ...
- 43
0
votes
0
answers
36
views
Maximise Range Vs Pitching Down while flying a Glider in a Downward Air Mass
While flying a glider, if I encounter a downward moving air mass (i.e. sink) while on final, should I fly to maximise range (best lift to drag ratio) or should I pitch downward in order to exit the ...
- 101
0
votes
0
answers
202
views
F1A COMPETITION GLIDER
I am working on a school project. I have looked up the airfoil database. There is a wide range of airfoils I have tried to optimize for my glider to no avail. How do i choose the best airfoil for a ...
0
votes
0
answers
47
views
Under what engine conditions is glide performance typically determined in performance charts?
The performance section of an information manual I am using states that the glide range indicated is "power off".
Does this terminology definitely imply that the engine is not firing? or ...
- 8,761
-1
votes
0
answers
42
views
Design Airbrakes Area (or choose) for Sailplane
I'm trying evaluate what airbrakes shape (area) need a sailplane to flight into thermal in minimun sink or approach.
The main idea was to iterate adding drag with different flat plates (or more ...
- 113