tail stall?

[rsultzbach]

Do you have any angle of attack info for this event?

[flyboy1963]

[quote=PCHunt;882559]........ If the tail stalls, the plane will pitch violently forward, which exacerbates the tail stall, and essentially renders recovery impossible. In the vast majority of aircraft, it is not possible to stall the tail before stalling the wing, which is a Good Thing.QUOTE]

my check pilot inadvertently did this in my -9a early in my 'training'.
Just pointing out it's possible.
I think we were nose high, full flap, full power straight ahead.
I almost went thru the canopy. not fun....but recovery was/did occur as soon as airflow was re-established.

[F1Boss]

Hey Fellas:

The -8 has a known flow problem around the wing root that can shake the tail. This happens at high alpha conditions, kinda like what would happen if the CG were shifted aft and maneuvers were repeated in the normal single pilot manner.

Falcon Lead, Stu McCurdy, has some vanes attached to his fuse that stops this flow issue. Dunno where he got 'em, but it sounds like they might be a good addition the those using their -8s for aggressive (high G, or high alpha) maneuvering.

Thread drift, sort of:
IMHO, high alpha/low speed maneuvering is something we should all explore, with the proper mentor on board. These airplanes are capable of far more aggressive low speed maneuvering than many of us can imagine. Seems to me it's safer to KNOW about this capability then not...

BTW the -8 is not the only ship out there with this flow disruption issue!

Carry on!
Mark

[Sid Lambert]

This just sounds like a power on stall in an rv.

Originally Posted by flyboy1963

my check pilot inadvertently did this in my -9a early in my 'training'.
Just pointing out it's possible.
I think we were nose high, full flap, full power straight ahead.
I almost went thru the canopy. not fun....but recovery was/did occur as soon as airflow was re-established.

[AX-O]

Start reading at page 363.

http://books.google.com/books?id=4dH...strake&f=false

[RVbySDI]

Originally Posted by PCHunt

........ If the tail stalls, the plane will pitch violently forward, which exacerbates the tail stall, and essentially renders recovery impossible. In the vast majority of aircraft, it is not possible to stall the tail before stalling the wing, which is a Good Thing.QUOTE]

my check pilot inadvertently did this in my -9a early in my 'training'.
Just pointing out it's possible.
I think we were nose high, full flap, full power straight ahead.
I almost went thru the canopy. not fun....but recovery was/did occur as soon as airflow was re-established.

What you just described here is not a tail stall. You described the normal behavior of an airplane in a full power stall. The nose dipped violently forward because the only way the airplane could fly again after such an aggressive maneuver was to have the nose go down abruptly once the stall occurred.

[luddite42]

'Tail stall' sounds more sensational though. ...and apparently can be used to describe simple buffeting of the tail from turbulence coming off the wing at high AOA, as well is the nose dropping from a normal stall. Next topic - 'tip stalls'.

[DEWATSON]

Does anyone know where to get a pair of the fuselage strakes described here? I've seen them referenced here a couple of times.

[flyinga]

I believe Stu got them form a 400 series Cessna cowling.

[DEWATSON]

Thanks so much.