Cirrus spin recovery was tested. Was: Why does airspeed change when I adjust the prop?

Bds,

I wonder who the "test pilot(s)" were that thought that
it was "virtually unrecoverable", and why they made that comment.


Not "why", but "if". That would be my first question.

--
Thomas Borchert (EDDH)

"Thomas Borchert" wrote

Bds,

I wonder who the "test pilot(s)" were that thought that
it was "virtually unrecoverable", and why they made that comment.


Not "why", but "if". That would be my first question.

So far I have not been able to find anyone (alive) with actual experience
spinning a Cirrus to say how it reacts one way or the other. And, since
even the factory hedges on this point I have to believe there is something
there to be concerned about.

Would this stop me from buying one - no. Would it stop me from spinning one
on purpose knowing that I might have to trash it to recover - yes.

YMMV

BDS

Bds,

Would this stop me from buying one - no. Would it stop me from spinning one
on purpose knowing that I might have to trash it to recover - yes.


I'm with you. Now let my find that stash of cash...

--
Thomas Borchert (EDDH)

BDS wrote:
"Jim Logajan" wrote

"Question: Has any spin testing been conducted in the CIRRUS airplanes?

CIRRUS Engineer: Yes, CIRRUS has done spin testing in both the SR20 and
the
SR22, and we've done a variety of spins in both models.

That's interesting. I wonder who the "test pilot(s)" were that thought that
it was "virtually unrecoverable", and why they made that comment.

I spoke with the Mooney test pilot who did spin testing in the 201. He
said it was not a fun day, and he didn't look forward to it. The manual
says that spins beyond one turn may not be recoverable (the test pilot
only had the guts to do one turn ). However, even at that it passed
the FAA's spin test requirements for normal category. Makes you wonder
what's up with the Cirrus that that wasn't even desirable.

-Robert

Robert wrote :
The manual
says that spins beyond one turn may not be recoverable (the test
pilot
only had the guts to do one turn ).

That sounds fishy. One turn is all that the FAA requires, but I
doubt the pilot was scared to do more. When spin testing a design,
aircraft are normally equipped with spin chutes that deploy from the
tail and arrest the spin. They can then be jettisoned for a normal
approach and landing. They are pretty common in GA spin testing. My
bet is that the test pilot was instructed by Mooney to do the one
required turn and call it a day.

John Galban=====N4BQ (PA28-180)


--
JGalban
Posted at www.flight.org

Since it can't spin, pilots are afraid to stall it. Stall's are good
practice to learn where the performance envelope is. Spins are good to
have under your belt in case a stall goes bad.

I never understood Calculus I until I took Calculus II.

We all need to go one step further in training than we will actually go
in practice. That is how we build the confidence we need.

Having said that, Cirrus are selling. So they must be doing something
right.

"Doug" wrote in message
ups.com...
I never understood Calculus I until I took Calculus II.

I would have gained far more useful knowledge if they had allowed my to
skip Calc II and Calc III and just take Calc I three times.

Vaughn

I never understood Calculus I until I took Calculus II.

I would have gained far more useful knowledge if they had allowed my
to
skip Calc II and Calc III and just take Calc I three times.


Calc was NASTY. But that @##$%^&* Matrix Algebra was WORSE.

(That's all I remember--WORSE than NASTY !)

Peter

Peter Dohm wrote:
I never understood Calculus I until I took Calculus II.
I would have gained far more useful knowledge if they had allowed my
to
skip Calc II and Calc III and just take Calc I three times.

Calc was NASTY. But that @##$%^&* Matrix Algebra was WORSE.

Calc I was easier than Theory of Caclulus (graduate level course that
involved proofs of the theory of limits)

john smith wrote:
Peter Dohm wrote:
I never understood Calculus I until I took Calculus II.
I would have gained far more useful knowledge if they had
allowed my
to
skip Calc II and Calc III and just take Calc I three times.

Calc was NASTY. But that @##$%^&* Matrix Algebra was WORSE.

Calc I was easier than Theory of Caclulus (graduate level course that
involved proofs of the theory of limits)

In my day we had to solve non-linear differential equations while walking
from home uphill to class in a snowstorm. And then solve systems of
nonlinear second order differential equations while walking uphill from
class to home in a sandstorm! Those M. C. Escher topology landscapes were
tough on our three-year-old legs.

;-)