Nimbus 4DT accident 31 July 2000 in Spain.

On Thu, 23 Jun 2005 16:18:58 UTC, Don Johnstone
wrote:

The answer is simple: Stall with a wing drop the first
action is to reduce the AoA, move the stick forward
to unstall the wing.
The action for a spin is: opposite rudder (to stop
the yaw/rotation) and then move the stick progressively
forward to unstall the wing. The recovery from there
is the same.

Of course. But how far does the wing have to drop - how much does the
glider have to roll at the stall - before you take spin recovery
action rather than stall with wing drop recovery action?

In real life, on the final turn, you have approximately 0.3 seconds to
answer this question ...

ian

Ian Johnston wrote:
On Thu, 23 Jun 2005 16:18:58 UTC, Don Johnstone
wrote:


The answer is simple: Stall with a wing drop the first
action is to reduce the AoA, move the stick forward
to unstall the wing.
The action for a spin is: opposite rudder (to stop
the yaw/rotation) and then move the stick progressively
forward to unstall the wing. The recovery from there
is the same.


Of course. But how far does the wing have to drop - how much does the
glider have to roll at the stall - before you take spin recovery
action rather than stall with wing drop recovery action?

In real life, on the final turn, you have approximately 0.3 seconds to
answer this question ...

ian

Has anyone mentioned the yaw string on these wide birds? What's it doing
during incipient diving vs. spinning?

Bob

On Thu, 23 Jun 2005 16:34:41 -0500, Bob Johnson
wrote:

Has anyone mentioned the yaw string on these wide birds? What's it doing
during incipient diving vs. spinning?

During lots of spin training flights (that include spiral dives to
show the difference) I *never* looked at the yaw string. Even in a big
bird the diffrence between a dive and a stall/spin is easy to detect
(and recover) if you have a little experience in this glider and
halfways correct spin training.

Frankly spoken, pulling the stick back hard enough to break off the
wings shows that the pilot was lacking the most basic skills to fly
that bird.


Bye
Andreas

Ian Johnston wrote:

In real life, on the final turn, you have approximately 0.3 seconds to
answer this question ...

I've always wondered about those "final turn spins". Yes, I know they
happen. I'm wondering nonetheless. It has been hammered in my heat right
from day one to watch that approach speed and to stay coordinated on
approach. Tolerance on the slow side: None. We won't let a student solo
before we are absolutely, positively sure he can and will acomplish
this. And when he gets his license, this will have become second nature
to him (just as not pulling back in a spin).

I'm not a great pilot and I'm making mistakes all the time. I can think
of a lot of ways how I could loose my life in a glider. But I'm
absolutely, positively sure that stalling/spinning in the final turn
will *not* be one of them.

Stefan

Ian Johnston wrote:

In real life, on the final turn, you have approximately 0.3 seconds to
answer this question ...

I've always wondered about those "final turn spins". Yes, I know they
happen. I'm wondering nonetheless. It has been hammered into my head
right from day one to watch that approach speed and to stay coordinated
on approach. Tolerance on the slow side: None. We won't let a student
solo before we are absolutely, positively sure he can and will acomplish
this. And when he gets his license, this will have become second nature
to him (just as not pulling back in a spin).

I'm not a great pilot and I'm making mistakes all the time. I can think
of a lot of ways how I could loose my life in a glider. But I'm
absolutely, positively sure that stalling/spinning in the final turn
will *not* be one of them.

Stefan