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Big Crash at Reno

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Big Crash at Reno

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Old 21st Sep 2011, 22:41
  #161 (permalink)  
 
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While I appreciate that it is more exciting to see the aircraft banking 60 or 70 degrees and it is quite difficult to get an idea of the scale from the diagram I would have thought it was crazy to fly aircraft at coming up on 500MPH in an arc that requires them to have control to keep them from going off the arc into the crowd.

In my mind, from hearing rules and guidelines, I would have thought that the only possible way to lay out a course would be with the long straight parallel to the crowd line and the last turn perhaps a mile or so before. That way the aircraft should be straightened out before entering the vicinity of the spectator zone.

An alternative, perhaps, would for the spectators to be within the race circuit, with usual distance clearance, then any fast aircraft going astray is far more likely to crash outside the perimeter. Some of the best views and pictures I have taken have been of aircraft flying an arc concave to the crowd line seen in almost plan view but some shows I have been to have been constrained by traditional air show mindset and a total lack of imagination on the part of the organisers. One in particular uses the longest runway as a dispersal and static show and sits the crowd on the North side of the runway in use. It is nearly impossible to get a good picture and on a clear day even to watch the aircraft comfortably because they are against the sun. Doesn't anyone think of these things?
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Old 21st Sep 2011, 23:42
  #162 (permalink)  
 
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Where we have been sitting in the stands for the last 12 years is perfect for watching the race. Moving the home stretch back much would take a lot of the effect away and putting the stands inside would obscure over 80% of the track so nobody would go. Yes, for a second, friday, we thought we were done but we won't go back if they try to make it 100% crowd safe and make the race boring. They might as well just close down the last air race in the world if that is the only solution.

If closing down the Reno air races is their solution then we had better close down Nascar too because people in the crowd get killed there too. Didn't somebody get killed with a baseball and a golf ball in the last 10 years too? We could make this world really safe if we outlawed all of these sports. Soccer will have to go. Remember the stands that collapsed. The list goes on.
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Old 22nd Sep 2011, 16:01
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Just some observations of the picture posted above by FoundationMetro (post 162) and particularly the trim tab and elevator position. The aircraft is in a left turn not disimilar to its last turn before the abrupt pitch up. The elevator appears to be in the slightly nose up position as would be expected to keep the nose up during the turn. But the trim tab looks to be in a nose down trim position suggesting that in high speed level flight (racing) nose down trim is required to maintain level flight and give the pilot a rest as he is always pulling in the turns. This means the tab is always in the high speed airflow and with the loss of the tab, an immediate pitch up could be the result due to the loss of nose down trim force.....not to mention a large change is static and dynamic balance of the elevators.

The other telling thing about this pic is the HORIZONTAL reflection of the ground in the spinner ! As mentioned previously, the reflections in the picture of the aircraft supposedly in a dive do not match up. The same photo was shown in one of the links to a news website but the photo was shown with the aircraft horizontal and it looked correct there. I think that pic might be genuine but turned through 90 degrees to make it more 'dramatic' !

Last edited by Von Klinkerhoffen; 22nd Sep 2011 at 16:14. Reason: bad english !
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Old 22nd Sep 2011, 17:01
  #164 (permalink)  
 
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The other telling thing about this pic is the HORIZONTAL reflection of the ground in the spinner ! As mentioned previously, the reflections in the picture of the aircraft supposedly in a dive do not match up.


They do actually, the spinner is dark because its reflecting a dark surface, more commonly known as the ground.

If you think the image has been rotated 90 degrees the sky on your planet must be a very peculiar color. At what point in the accident sequence was the aircraft straight and level at the same plane as the photographer to get a perfect side on shot?, and where was the photgrapher standing in relation to the aircraft at the time to get this perfect side on straight and level shot? You know, angles, distances etc etc. In your own time.

Funny that none of the photoshop keyboard warriors has come up with a plausible explanation as to why a photographer with a world wide syndicated image of such a widely covered accident would risk his career in manipulating such an image. The only way a photographer or agency would 'manipulate' such an image is close cropping, you don't need to see blank sky, the close vertical crop works for this image and emphasises the 'story' being told by the image. i.e. the aeroplane is pointing at the ground ...
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Old 22nd Sep 2011, 18:14
  #165 (permalink)  
 
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Hmmm lots of thoughts of a photographic nature on an aviation forum but not much opinion of an aviating nature...sure you belong here Jumpseater ?

Who said anything about photoshopping ? I said the photo looks like it has been turned through 90 for dramatic effect.....not neccessarily by the photographer.......plenty of unscrupulous news papers/stations to do that sort of thing.

Look again at all the photos on page 6, especially posts 104,111,& 120.

In my world the horizon runs from left to right or vica versa.....since when has it gone vertically ?

In post 111 with the 2 pics side by side , with the aircraft rolling on its back the reflection is along the a/c longitudinal axis as expected, with the a/c in a dive pointed at the ground.....the reflection of the horizon is still along the longitudinal axis....what Lost in Saigon says about the reflections is hard to dispute !

PS at what point did the a/c roll left because thats what the ailerons are demanding in that photo ( unless it is aileron upfloat that we are seeing ) !
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Old 22nd Sep 2011, 18:59
  #166 (permalink)  
 
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reflection may be hangers, not planes

I'm sure the photograph is real: reputable photojournalist, underside of wing is well lit, top of tailwheel door is shadowed, etc.

As far as the reflection goes and Saigon's claim: bright spots in the spinner are probably hangar roofs at the airport. If you look at the google aerial view of the airport you'll see that right near where the plane came down there rectilinear hangers with bright white roofs against a black tarmac.

Google Maps

Can we please drop the conspiracy theories now? please!
-Rob
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Old 22nd Sep 2011, 19:46
  #167 (permalink)  
 
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Hmmm lots of thoughts of a photographic nature on an aviation forum but not much opinion of an aviating nature...sure you belong here Jumpseater ?


More knowledge than thought, well from some quarters that is...

Whether I belong here isn't for you to question, we'll leave that for the mods to decide, but if the board ever becomes professional aviation licence holder only to be a member, I'll still be here, will you?

PS at what point did the a/c roll left


Just before it hit the ground actually, didn't you know?

Sorry, I don't think you mentioned it, just remind me where was the photographer standing in relation to the aircraft? Angles, distances you know that sort of stuff ...
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Old 24th Sep 2011, 17:06
  #168 (permalink)  
 
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Preliminary Report

www.ntsb.gov/aviationquery/brief.aspx?ev_id=20110917X22412&key=1
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Old 24th Sep 2011, 17:09
  #169 (permalink)  
 
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I was rather surprised to find that nobody had posted a link to the preliminary report from the NTSB, posted yesterday.

Nothing there that hasn't been discussed here already, but if it saves you the time of searching for it:

http://dms.ntsb.gov/aviation/Acciden...2011120000.pdf
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Old 24th Sep 2011, 19:44
  #170 (permalink)  
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This unhappy event is fresh in our minds now, but in decades, someone is going to pour over reports, and read:

Aircraft: NORTH AMERICAN/AERO CLASSICS P-51D, registration: N79111
Injuries: 11 Fatal,66 Serious.

and ask "What the heck?"

And perhaps:

"the airplane sustained substantial damage"

Is a bit of an understatement...
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Old 25th Sep 2011, 01:17
  #171 (permalink)  
 
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forgive me if this comes across as insensitive bearing in mind the tragic events, but a friend who saw the pictures asked me (as an aero eng. undergrad... like i'd know) why there was no explosion or fire in the crash. the more i thought about it, the more it puzzled me, as surely it would have been carrying enough fuel for the rest of the race plus the usual safety reserves. the only other time i have heard of such an explosion-less crash was ken wallis' wellington during the war, and that was because it had been run completely dry.

rip mr leeward and the spectators. may the awesome spectacle of the races continue to run in future years
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Old 25th Sep 2011, 05:28
  #172 (permalink)  
 
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This is an amazing read....
Ignomini Home

Some amazing footage....
?rel=0" frameborder="0" gesture="media" allow="encrypted-media" allowfullscreen>

Hello, obviously very new here. This forum has been an amazing source of intelligent info regarding the Reno accident. Although I wasnt there, I like countless others have been affected by this. I spent 20 years racing cars, so I love competition, speed and the idea of doing those things to their limits. I also was a helicopter mechanic in the Air Force so also have a love for aviation. Thanks for all the insight and experienced input. I too have wondered about the absence of fire, but some of the theories out there make a bit of sense. And after watching the above video would love to know if any of you have a different opinion than what you originally thought. I understand about speculation and the damage it can do. Just curious, and hope you folks dont mind this as my first post here. Thanks again, and prayers to ALL those affected by this tragedy.
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Old 25th Sep 2011, 06:51
  #173 (permalink)  
 
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Link to the best video of the accident. No impact footage.
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Old 25th Sep 2011, 07:50
  #174 (permalink)  
 
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Seen two double fatal crashes with steep descent resulting in no fire whatsoever. Firefly at Duxford, T.34 at Mildenhall. Seen some fiery ones too, unfortunately.....

Last edited by JEM60; 25th Sep 2011 at 08:04.
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Old 25th Sep 2011, 07:52
  #175 (permalink)  
 
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the only other time i have heard of such an explosion-less crash was ken wallis' wellington during the war, and that was because it had been run completely dry.
You haven't heard much then.
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Old 25th Sep 2011, 11:12
  #176 (permalink)  
 
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patowalker,

I readily admit that compared to the minds on here, I am but a huge noob with much to learn about the world of aircraft and how they work. i was simply wondering what would prevent the presumably large amount of fuel from catching fire as in my limited experience it always usually finds a spark or hot piece of debris and catches alight. i would be grateful if someone could offer me an explanation, by PM if neccessary if not suitable for the thread, for me to further my knowledge of how such situations work.
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Old 25th Sep 2011, 11:41
  #177 (permalink)  
 
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An extraordinary eyewitness account, thanks to the man that wrote it and to oakape for posting it here.

BTW, an article on temporal distortion here:

http://library.ndmctsgh.edu.tw/milme...r/fsmjun99.pdf
Odd thing that time dilation stuff. I saw a Phantom crash at Coningsby back in '75 (XV 416 for the pedants) . I was out on an aircraft and looked up to see a 'toom doing a roller but trailing black smoke. The Speys didn't smoke unlike the J79 so that was unusual in itself. I kept my eye on it and the crew banged out, the a/c rolled slightly and crashed into the River Witham. I would say the whole episode lasted a couple of minutes until I was told by a mate in ATC that the whole incident had lasted about 10 seconds.

Also have you noticed that from the time you chop the throttle, do the flare and actually have tires on tarmac can seem quite a while but when you watch someone else do it from the ground it takes no time at all. Or maybe I just float down the runway for miles........

The eyewitness account was thoroughly chilling, glad the man only had minor injuries.
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Old 25th Sep 2011, 13:15
  #178 (permalink)  
 
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Mat777,the reason,or at least one of possibly several,there was no explosion is that the fuel tanks are filled with fire retarding foam,same as in most racing cars/racing bikes.According to some witnesses the foam,blue in this case was everywhere,thus no pooling or gushing effect,and rapid evaporation.
You can also get a fine foil which has the same retardent effect..Google ..`Explosafe`,..also `exmesh.co.uk ` made in Hartlepool..

Last edited by sycamore; 25th Sep 2011 at 13:29.
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Old 25th Sep 2011, 14:23
  #179 (permalink)  
 
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sycamore,

you may be right, of course. However, Pete Law, the thermodynamicist who designed the Ghost's cooling system, is quoted in Air & Space magazine as saying that the anti-detonation injection (ADI) fluid (a 50/50 mixture of methanol and distilled water)
had doused any flame. He told us that a friend who had been standing a hundred feet away had been splashed by the stuff.
The Ghost carried 1 gallon of ADI fluid for every gallon of Avgas or 150 gallons of each on every flight. Link to the article:
Tragedy at Reno | Flight Today | Air & Space Magazine

Also, within the article, there is a link to another great piece on the Ghost's modifications in EAA Sport Aviation (haven't seen it posted here, so apologies if I missed it). There, Leeward was quoted as saying that
the seating position in the Ghost is stock (...)
EAA Sport Aviation - May 2011
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Old 25th Sep 2011, 20:18
  #180 (permalink)  
 
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Your Video

Even though the resolution isn't super high, and the camera is a great distance from the plane, if I had to place a bet I would say pretty certainly this was tail flutter. If you look at the aircraft just before the even occurs, things like the exhaust stacks are reasonably sharp. After the even begins, virtually everything on the aircraft is more blurry.

Before the aircraft begins climbing, there is a short abbreviated roll left and right. It doesn't look like much here because of the distance; however, I suspect in the cockpit it was quite violent. If the flutter was related to the trim tab it could have become asymmetric (caused the elevators to become out of phase with each other with one moving up when the other one is moving down. At these speeds and with such a highly modified aircraft, who knows what that might have caused in the way of controllability problems.

If the pilot was seated as shown in the picture I posted earlier in the thread, I think he might have been out from the first roll left and right. Everything from there on was just physics and aerodynamics.
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