Matt Hall nearly crashes at Red Bull Air Race Championships - Windsor, Ontario

[Flench]

You guy's seen this ?
http://www.youtube.com/watch?v=kO7BuPG_vVo

[SIK1]

Wow! That's about as close to crashing as you can get without actually crashing.

[Stoney]

Unreal...Good example of an accelerated stall.  That's a one-in-a-million recovery there.

[mechanic]

bah thats nothing, i've done it in a mosquito before  



here is another good clip about matt hall. http://www.youtube.com/watch?v=5CB27K-wIsM&feature=related

[FTJR]

Obviously a talented pilot,  but there was a huge amount of luck in that recovery.

[CAP1]

Unreal...Good example of an accelerated stall.  That's a one-in-a-million recovery there.

do a search for the race in perth. there was an identical stall, and he didn't recover. he hit the water wings level.....no injuries...........there's even a slow motion of the tail camera, where you can see the onset of the stall, just before the aircraft tries to over-rotate from the stalled wing.

[68Hawk]

Wish those skills worked with AH trees.

[Stoney]

do a search for the race in perth. there was an identical stall, and he didn't recover. he hit the water wings level.....no injuries...........there's even a slow motion of the tail camera, where you can see the onset of the stall, just before the aircraft tries to over-rotate from the stalled wing.

Wow.  Two identical incidents in the same aircraft type.  Looks like a trend.  I guess there is such a thing as too much elevator authority?

[Ex-jazz]

Now those both were The Close Call  


OT
Is there a Red Bull Air Race videos, from where you see the speed, G's and possible a altitude data real time?

[CAP1]

Wow.  Two identical incidents in the same aircraft type.  Looks like a trend.  I guess there is such a thing as too much elevator authority?

yea. i think it's more like they're riding so close to the edge, that even just a shift in the wind, can cause this type of incident.

 i think on redbull;s site, there's another one of a similar "near" stall, on the entrance to the race course.......the pilot even said in the interview, that he tried to adjust and pulled a little harder i think.

i also do not believe that there was any luck involved in either of those incidents.......it was pure skill of the pilots.
linky

http://avstop.com/news_april_2010/red_bull_air_race_plane_crash_in_perth_pilot_adilson_kindlemann_ok.htm

[Stoney]

i also do not believe that there was any luck involved in either of those incidents.......it was pure skill of the pilots.

Actually, I think its the design of the aircraft.  Obviously they both suffered from tip stall, and if wasn't for those full span ailerons, neither of them would have been able to get the aircraft to hit flat. 

[Ex-jazz]

Actually, I think its the design of the aircraft.  Obviously they both suffered from tip stall, and if wasn't for those full span ailerons, neither of them would have been able to get the aircraft to hit flat.  

Any idea about the symmetrical airfoil type they are using?

I remember once the TV race commentator was mentioning something about the high lift profile wings on those air-race planes.

[CAP1]

Actually, I think its the design of the aircraft.  Obviously they both suffered from tip stall, and if wasn't for those full span ailerons, neither of them would have been able to get the aircraft to hit flat. 

you could be right. did you watch the race at nj, over the hudson river? a couple of the guys have winglets on their aircraft now. it didn't seem to give them any distinct advantage though.

 what i did notice, was serious energy management. there were a couple of guys with admittedly underpowered aircraft(for this type of racing) that were VERY competitive, simply by flying much cleaner.

[Stoney]

Any idea about the symmetrical airfoil type they are using?

I remember once the TV race commentator was mentioning something about the high lift profile wings on those air-race planes.

Totally unscientific, but from pictures, it appears to be a straight slab, turbulent airfoil.  I'd guess its probably close to a NACA 0012 or 0015.  Its almost certainly a custom design, but appears to be simple.

[Ex-jazz]

Totally unscientific, but from pictures, it appears to be a straight slab, turbulent airfoil.  I'd guess its probably close to a NACA 0012 or 0015.  Its almost certainly a custom design, but appears to be simple.

Thank you for your information.

I was checking with the Profil the polars a bit (Re500000):



I understood, the Eppler 472 is a typical aerobatic airfoil with good Cl at high AoA aplus very gentle stall characteristic.

The NACA 0012/0015 seems to be more for the speeding, right?