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-   -   Classic stall (https://www.pprune.org/pacific-general-aviation-questions/594154-classic-stall.html)

Squawk7700 1st May 2017 07:26

Classic stall
 
Didn't get the memo about 1.3x stall speed for air displays.

https://youtu.be/ahMIffZhBD0

djpil 1st May 2017 07:51

The manual for my FAR 23 factory built airplane specifies 1.07 times the power off stall speed for landing approach to achieve the book figure for landing distance.

And, being a tailwheel airplane, CASA's Part 61 mandates that for training as well as requiring the student to achieve better than the distance from the book.

Duck Pilot 1st May 2017 08:45

Video clearly showed the stall buffet prior to the wing drop.

Very lucky pilot to walk away from that accident.

Air displays and pilots mishandling their aircraft resulting in an accident, second one this year! Not a good look.....

Squawk7700 1st May 2017 08:45


Originally Posted by djpil (Post 9757491)
The manual for my FAR 23 factory built airplane specifies 1.07 times the power off stall speed for landing approach to achieve the book figure for landing distance.

And, being a tailwheel airplane, CASA's Part 61 mandates that for training as well as requiring the student to achieve better than the distance from the book.

1.07 isn't that much of a buffer however in perfect conditions it might be ok.

From memory the CASA display guidelines specify 1.3x but it's been quite a while since I've done one.

Cloudee 1st May 2017 08:54


Originally Posted by Squawk7700 (Post 9757468)
Didn't get the memo about 1.3x stall speed for air displays.

https://youtu.be/ahMIffZhBD0

This bloke did two things wrong:
1. Don't try to land 10 metres above the runway.
2. If you want to land short, use a Supercub!

Aussie Bob 1st May 2017 08:54

1.07 seems very slow to me too, what sort of aeroplane is this?

Squawk7700 1st May 2017 09:08

Looks to be an raaus registered Highlander SuperSTOL.

The Highlander ? Wild West Aircraft

27/09 1st May 2017 09:39

1.07 seems extremely slow to me too.

I thought all POH landing distances were calculated at 1.3 Vs with a 50 ft threshold crossing height.

Squawk7700 1st May 2017 10:37

There's a very subtle f*ck in the commentary at 33 seconds. I'm not surprised!

Tarq57 1st May 2017 10:40

Maybe a little gusty to be approaching with so little margin.

Classic commentary, post-crash. "Whoops, folks, something's gone wrong."

Vincent Chase 1st May 2017 10:47

Happened about 2 years ago so not recent, the bloke flying spent a looong period of time flying heavy aeroplanes around wee waa in the dark so proof that a crowd can make even the best of us push a bit too far. I'm pretty sure the commentary was his wife so held it together pretty well considering! The fact he walked away must be a good selling point now I reckon.

Capt Fathom 1st May 2017 11:00

Classic ingredients: plane, camera, audience. Oops!

Duck Pilot 1st May 2017 11:04

Selling point to who? Undertakers, the pilot is lucky to be alive.

Ex FSO GRIFFO 1st May 2017 11:19

Shudda 'picked it up' wif rudder.......

(Stby for incoming.......)

Cheers:p

Capt Fathom 1st May 2017 11:37

Downwind turn......? :E

jas24zzk 1st May 2017 11:52

Was taught 1.3 Vs by Mike Valentine during my abinitio on gliders. His words were 1.3 will work for just about any aeroplane, remember it.

Over the years flying with different pilots in unfamilliar aeroplanes, watching them and doing the calculation mentally, i've always found the number to be pretty close to what they fly, and also pretty close to most POH's on types i have flown.

There is always the exception of blokes on bonza's 100 knots over the fence, or some others I know, combat power till the crunch.

RubberDogPoop 2nd May 2017 00:31

Did they sell many after that?

flywatcher 2nd May 2017 04:22

I would check the rigging of that aircraft pretty carefully.

Capn Bloggs 2nd May 2017 07:01


Originally Posted by Griffo
Shudda 'picked it up' wif rudder.......

The wif couldn't pick it up, she was on the PA! :E

Flying Binghi 2nd May 2017 08:57

Pilot lost control at tree top height and walked away... looks to be an excellent selling point to me...:cool:





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