All Questions
Tagged with spins aerodynamics
16 questions
4
votes
1
answer
1k
views
Why can’t flying wings enter a flat spin?
In this answer, it states:
Naturally stable flying wings never enter a flat spin; their spin modes are all fairly steep due to the lack of a strong inertial moment from the lengthwise distribution of ...
- 3,755
5
votes
2
answers
168
views
Confusion about angle of attack difference between wings in a slip
CFI applicant here. I am experiencing some confusion regarding angle of attack difference between wings in a sideslip. When discussing stability, the PHAK says that that the lowered wing will have a ...
2
votes
1
answer
162
views
Why does the wing drop prior to a spin?
In the process of understanding the aerodynamics of spins, I'm having a hard time understanding why one wing drops.
I understand that the for spins to occur, a stall + a yaw must occur. I also ...
- 21
1
vote
3
answers
602
views
What differentiates the entry procedures for spins and snap rolls?
Both a spin and a snap roll are aerobatic manoeuvres involving stalling one of an airplane's wings earlier and more deeply than the other. Both are entered by pitching up sharply to stall the ...
- 28.6k
6
votes
5
answers
914
views
Does a left spin differ from a right spin for a single-engine propeller aircraft, in terms of spin characteristics & ease of recovery?
Given a single-engine propeller aircraft with its nose-mounted propeller rotating on the right-hand side when viewed from the cockpit, and given the typical effects like P-factor, prop-wash and ...
- 918
4
votes
2
answers
290
views
Does a skinless fuselage add to the likeliness of an unrecoverable spin?
While at Air Venture this week, I happened to hear a pilot of a small experimental airplane say that he liked the skinless (Naked) look his airframe had at one point during the build, but that he ...
- 3,696
1
vote
2
answers
185
views
How does the advancing wing in a flat spin create nose thrust?
Peter's answer to this question leads me to another question.
How does the advancing wing in a flat spin create nose thrust?
I imagine this like some object spinning in a liquid. I would think ...
- 9,072
3
votes
3
answers
459
views
How to best recover from an excessive descent?
Suppose I found myself in a rapid, steep descent, perhaps right after breaking a spin. E.g. a 60 degree nose down with 100kt and accelerating rapidly, on a Cessna 172.
What might be an ideal ...
- 169
17
votes
2
answers
3k
views
Does it really take 9000 feet to recover from a spin in a P-51 Mustang?
I was a bit surprised to hear from this P-51 pilot (9:33 into the video) that the Mustang requires 9000 feet to recover from a spin. This seems high to me. The Mustang POH does not confirm this, but ...
- 3,696
15
votes
4
answers
3k
views
Is it dangerous to do a skidding turn to lose altitude without increasing airspeed?
I was taking some lessons in a light sport aircraft in South Africa a few years back, my instructor taught me something which I had never seen or heard of before or since. We went through an emergency ...
- 993
7
votes
3
answers
909
views
Is it possible to get into a spin situation while coordinated?
Is there any possibility of spinning while coordinated? Of course, any CFI would tell you no, but I wonder if the the following situation could result in a spin while coordinated:
Slow level flight ...
- 334
14
votes
3
answers
4k
views
How do the Tiger Moth's anti-spin strakes work?
As originally designed, the DH.82 Tiger Moth had unpredictable spin characteristics. Many aircraft were lost because spin recovery took too long (i.e. too much loss of height). Many examples of the ...
- 12.7k
13
votes
7
answers
11k
views
What is the Beggs/Mueller emergency spin recovery technique?
I've always used PARE for spin recovery:
Power to idle
Ailerons neutral
Rudder opposite the spin until rotation stops
Elevator forward to break the stall
What is Beggs/Mueller emergency ...
- 16.9k
31
votes
3
answers
1k
views
Is it possible to build a paper airplane that will enter a fully developed spin?
Some students learn best when they can see aerodynamic principles in action. I'd really like to be able to show a student how a spin occurs.
Is there a way to make a paper airplane that will enter a ...
- 23.3k
11
votes
2
answers
514
views
Why is the altimeter unwinding unevenely during a spin?
Spencer Suderman recently did a world record 81-turn inverted flat spin, and dropped over 21 thousand feet while doing so. The entire thing is documented on youtube. The spin starts at 3 minutes into ...
- 11.8k
17
votes
3
answers
9k
views
What happens in a stall during a slip?
In flight training we're warned against skidding turns since they have a higher potential for a stall/spin (the classic example being the stall/spin on the base to final turn).
However, how does the ...
- 1,204