Aerobatic ATR

[Mago]

I do not understand danish, but take a look at this:


http://www.spotters.dk/portal/topic....um_Title=Fotos

[Go Smoke]

I'm guessing you mean this link.

http://www.spotters.dk/portal/topic....s+fra+spotting

Probably should go in the spotters forum.

[Mago]

Not for spotters only

The idea was to comment on the barrel roll, not on the other photos.

[Jetscream 32]

Aileron roll to the right - should probably move the thread to Flight Testing - as this is a manoeuvre more associated with test and evaluation - my only gripe would be that it looks like the aircraft was on a temporary registration, either having just been re-leased or sold from an airline - and that the next poor punters that get in this aircraft to fly short commuter sectors know nothing about the stress involved by no doubt - expert chief pilots - who had done it so many times before it was fine........... blah, blah, blah - "there i was nothing on the clock but the makers name...!!!!!!""

It's funny nowhere in the manual have i read the entry speeds for aerobatic manoevres on an ATR......

It should only be a max 2g stress tho - if he got the entry and recovery right...

Right off to wring myself out in something that was designed to go upside down...... blue skies.....FAB

[411A]

Transport airplanes were certainly not designed for aerobatic maneuvers, yet a very few pilots want to do 'em anyway.

Flying these types is dead easy...fly it the way it was intended by the manufacturer...and it will likely keep you out of trouble.

To those that want to operate outside of the approved envelope...you might get what you have not bargined for, and quite frankly, unless properly trained test pilots, are nothing more than silly fools.

[rmac]

Does rather look like a barrel roll though !

[aviate1138]

Having been in a Lear Jet doing a properly executed barrel roll, I can vouch for the fact that no increase in "G" was noticed and that water in a cup placed on the instrument coaming did not move. Not aware that any stress was applied to the airframe. It does obviously depend on the skill of the pilot concerned.

[piky]

Would +1g not demonstrate a properly executed barrel roll?

[PPRuNe Pop]

It was a barrel roll and would have been positive all the way round. It wasn't perfect but it was good!

[212man]

Would +1g not demonstrate a properly executed barrel roll?

Where has this urban myth come from? How do you pull out of a dive with 1 g, or how do initiate the climb, using 1g? A barrel roll is not a 1 g manouevre

[Mark1234]

<must.. not... oh.. sodit...>
By definition, level flight is a +1g manouver. anything else is not. A barrel roll involves >1g pullup, and quite possibly a lot more than +1 on recovery to level flight - especially if you get nose low/ fast / pull too much in the middle phase. And that's only pitch plane G force.. there's rolling / twisting stresses too.

[The Flying Stool]

I recall once at the Sunderland Airshow perhaps in 2001ish when a Gill Airways (remember them?) ATR was flying a routine and remember being extremely impressed with some one the manouvres being flown: VERY steep wing overs, high speed passes and steep climbs, all very impressive but it did make me wonder about the stresses on the airframe. I believe on the two days of the show, both an ATR-42 and and ATR-72 were used and obviously both aircraft will handle differently but were seemingly doing the same manouvres. Anyone remember?

[Pugilistic Animus]

Where has this urban myth come from? How do you pull out of a dive with 1 g, or how do initiate the climb, using 1g? A barrel roll is not a 1 g manouevre

212Man ---it is a 1 g maneuver provided that while you're rolling in at a rate in proportion to the rate at which you are falling back to level height

verify entry speed ---35 degrees nose-up then bring'er round

but it can easy turn into a +???g and -???g maneuver

btw: never 'push on' negative g just keep rolling and recover upright

PA

[Mark1234]

PA: What you're describing sounds rather more like a vanilla aileron roll than a barrel roll.

[FireLight]

I'd like to hear the pilots explanation to the passengers.

[Hartington]

Bob Hoover

I know the old Shrike Commander isn't quite the same as an ATR but does anyone else here remember Bob Hoover and his routine in the Shrike?

http://en.wikipedia.org/wiki/Bob_Hoover

[dh dragon]

Bob Hoover

I vividly remember seeing Bob Hoover display the Shrike Commander at the CAF shows down in Rebel Field(Harlingen TX) in the 80,s.Totally amazing ! but I hadn,t seen the video link in Wikipedia before,just great.

[piky]

Never did trust Heli Pilots!

[wobble2plank]

Anything where you are accelerating away from mother earth (i.e climbing) is conducted at >+1 G.

Any initial pull up to entry in a barrel roll is therefore >+1 G. Accelerating downwards and recovering to level flight will require >+1g.

QPQ, A barrel roll, for the full aerobatic manoeuvre, is not a 1g manoeuvre.

Flown them in both fixed and rotary wing. Fling wings make things a bit more exciting, especially catching the NR rise on the recovery!

[PaperTiger]

A barrel roll, for the full aerobatic manoeuvre, is not a 1g manoeuvre.

Exactly, it's a misnomer. A barrel roll is a combination loop and roll; while the roll bit can be done at 1g if you're good, the loop bit cannot.