Low level barrel roll gone wrong

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Low level barrel roll gone wrong

Unread post by p38 » Wed Mar 25, 2020 10:32 pm

You can just see it going wrong......

https://www.liveleak.com/view?t=9v0Or_1584990194&p=1
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Re: Low level barrel roll gone wrong

Unread post by biffvj » Thu Mar 26, 2020 4:56 am

Buzzing candidate pilots and then attempting a roll gets you a Darwin award.
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Re: Low level barrel roll gone wrong

Unread post by rare bird » Thu Mar 26, 2020 7:12 am

audience and cameras - always a bad omen
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Re: Low level barrel roll gone wrong

Unread post by Mot » Thu Mar 26, 2020 7:58 am

70a.jpeg.jpg
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Re: Low level barrel roll gone wrong

Unread post by Volo » Thu Mar 26, 2020 9:18 am

This aircraft has automatically deployed slats that deploy aerodynamically probably making it highly unsuitable for a Barrel role as they may shut if the maneuver goes negative , even briefly - see below :-

The Rallye is equipped with a cantilever wing, which incorporated interconnected full-span automatic leading edge slats, wide-chord slotted ailerons, and wide-span Fowler-type trailing edge flaps. The combination of full-span slats and large Fowler flaps provided the aircraft with its capable slow-speed flight performance.[4] Fuel is also internally carried within the wings.[16] According to Flying Magazine, the Rallye possessed a generous degree of controllability and was relatively forgiving to fly, being extremely difficult to mishandle to the point where effective control of the aircraft would be lost.[3] The aircraft is safe to fly at practically any piloting skill level. While the Rallye has fair manoeuvrability, such as during loops and rolls, the execution of aerobatic maneuvers is not officially approved by the manufacturer
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Re: Low level barrel roll gone wrong

Unread post by 117 » Thu Mar 26, 2020 10:16 am

Dave, thats a Zlin, not a Rallye

https://www.zlinaircraft.eu/en/Airplane ... L-GURU-en/

Looks like they chickened out of the roll three quarters of the way through it and tried to pull out instead of completing the roll
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Re: Low level barrel roll gone wrong

Unread post by Volo » Thu Mar 26, 2020 10:27 am

117 wrote:
Thu Mar 26, 2020 10:16 am
Dave, thats a Zlin, not a Rallye

https://www.zlinaircraft.eu/en/Airplane ... L-GURU-en/

Looks like they chickened out of the roll three quarters of the way through it and tried to pull out instead of completing the roll
.................
What do you know - you are indeed correct -good thing I wasn't a spotter during the second world war - I would shot our own airforce out of the sky . :D
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Re: Low level barrel roll gone wrong

Unread post by jimdavis » Thu Mar 26, 2020 10:58 am

Mot wrote:
Thu Mar 26, 2020 7:58 am
70a.jpeg.jpg
Quite right Mot. It started off as an aileron roll and half way through he tried to turn it into a barrel roll.

You would think a military pilot would know better than that. :shock:

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Re: Low level barrel roll gone wrong

Unread post by TC » Thu Mar 26, 2020 12:26 pm

Probably as simple as not checking the stick forward on the climb out. Scared of the ground, keep the stick back a bit, and into the ground when inverted.
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Re: Low level barrel roll gone wrong

Unread post by Baggie » Thu Mar 26, 2020 12:41 pm

Yet another unplanned, unpracticed, spur of the moment aileron roll gone wrong. Reminiscent of the Harvard at Pietersburg in the 1990’s. ](*,) ](*,)
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Re: Low level barrel roll gone wrong

Unread post by CMW » Thu Mar 26, 2020 1:48 pm

Looks more like not enough energy and airspeed for the manoeuvre, particularly given the steep pull up at the start. Slight yaw to the starboard wing right from the start of the roll, and what looks like a full stall when it becomes inverted. What follows does not look like anything intentional, but rather a spin towards the stalled starboard wing and then into the ground.

At least that is what my RC planes do if I try to roll too slowly. I've only ever rolled full size in an Extra, but I assume a full size would misbehave in the same way as a model if speed was too low.
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Re: Low level barrel roll gone wrong

Unread post by Slam and Go » Thu Mar 26, 2020 4:15 pm

With an Instructor on board! :shock:

Where is the discipline?! Is the example they are setting for their pupils?!
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Re: Low level barrel roll gone wrong

Unread post by Chris71 » Thu Mar 26, 2020 4:48 pm

I think he realised at midway point that he was out of energy and simply panicked. At about 230 degrees he starts pulling hard, one can see the change of direction, and ends up stalling the righthand wing. Might have just got away with it if he didn't pull, or at least might have been survivable.
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Re: Low level barrel roll gone wrong

Unread post by Sideslip » Thu Mar 26, 2020 5:59 pm

Volo wrote:
Thu Mar 26, 2020 9:18 am
This aircraft has automatically deployed slats that deploy aerodynamically probably making it highly unsuitable for a Barrel role as they may shut if the maneuver goes negative , even briefly - see below :-

The Rallye is equipped with a cantilever wing, which incorporated interconnected full-span automatic leading edge slats, wide-chord slotted ailerons, and wide-span Fowler-type trailing edge flaps. The combination of full-span slats and large Fowler flaps provided the aircraft with its capable slow-speed flight performance.[4] Fuel is also internally carried within the wings.[16] According to Flying Magazine, the Rallye possessed a generous degree of controllability and was relatively forgiving to fly, being extremely difficult to mishandle to the point where effective control of the aircraft would be lost.[3] The aircraft is safe to fly at practically any piloting skill level. While the Rallye has fair manoeuvrability, such as during loops and rolls, the execution of aerobatic maneuvers is not officially approved by the manufacturer
I think its a Zlin.
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Re: Low level barrel roll gone wrong

Unread post by Bearcat » Thu Mar 26, 2020 6:24 pm

The aircraft involved is an Aerotec A-122 Uirapura

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