video: 20 ft wingspan B-24 crash on maiden flight.... (Full Version)

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teryn1 -> video: 20 ft wingspan B-24 crash on maiden flight.... (9/27/2004 1:59:53 AM)

:)



ifixairplanes -> RE: video: 20 ft wingspan B-24 crash on maiden flight.... (9/27/2004 2:13:58 AM)

nice...i got to it before everyone else ate up the bandwidth!!

WOW! that vid. is a keeper! Nothing at the scene but silence and destruction. I wonder what happened....

sean



SilverEagleBW -> RE: video: 20 ft wingspan B-24 crash on maiden flight.... (9/27/2004 2:27:14 AM)

WOAH![:D]Wonder what his wife said when he got home!



teryn1 -> RE: video: 20 ft wingspan B-24 crash on maiden flight.... (9/27/2004 2:55:09 AM)

the wife doesn't care. he does what he wants. He has the time and money.



CrashPro -> RE: video: 20 ft wingspan B-24 crash on maiden flight.... (9/27/2004 3:34:55 AM)

oh man....that is sad.....looks like pall bearers carrying their best friends casket at the end[:o]



TOPGUNNER -> RE: video: 20 ft wingspan B-24 crash on maiden flight.... (9/27/2004 3:52:40 AM)

Not trying to be mean, but that looked like old man syndrome....... "Pilots Error" [;)]



William Robison -> RE: video: 20 ft wingspan B-24 crash on maiden flight.... (9/27/2004 4:05:28 AM)

If you watch the wings on taxi out, they are flexing a lot. And when the plane goes into its left roll to the end you can see the ailerons are at full right, against the roll.

With these points in mind, I suspect the outer wings were not secure, one or the other slipped out of place causing the roll and spiral.

Bill.



Underaged Pilot -> RE: video: 20 ft wingspan B-24 crash on maiden flight.... (9/27/2004 5:18:15 AM)

drats it was at 77% and failed trying again



randall1959 -> RE: video: 20 ft wingspan B-24 crash on maiden flight.... (9/27/2004 6:47:56 AM)

At that span of twenty feet a little flexing of the wings would probably be normal. Even full size aircraft with big wingspans have a bit of give in the wings to keep them from breaking off during flight. It appears to me more than anything that this fellow didn't have quite enough airspeed when he made that turn. He should have probably tried to make that turn a little flatter to keep his airspeed up. Maybe he just wasn't experienced with really really big models. I'd say that plane had to be pretty darned heavy to be flying in a bank as slowly as it was. If he was using reverse aileron instead of rudder, that, to me, speaks of inexperience in flying really large planes. Or maybe it just all happened so fast that he misjudged his attempted correction. Most of the really big planes require coordinating rudder in turns.



JeffH -> RE: video: 20 ft wingspan B-24 crash on maiden flight.... (9/27/2004 2:51:28 PM)

Looked like too much bank and maybe a tad tailheavy. He pushed the nose down just after takeoff, but then it kind of climbed back up as he started his turn. Ran out of lift, altitude and ideas all at the same time.



rsallen13 -> RE: video: 20 ft wingspan B-24 crash on maiden flight.... (9/27/2004 3:25:31 PM)

I agree with JeffH. Not enough airspeed and tail heavy.

But what gets me is right at the start. A motor run up being held by one older flyer with three guys right in front of it with the building behind them. It the holder had lost his grip the bystanders would have been toast with no where to go.



randall1959 -> RE: video: 20 ft wingspan B-24 crash on maiden flight.... (9/27/2004 4:23:47 PM)

It kinda makes me wonder if the plane wasn't really underpowered to begin with if it only took one guy to hold that massive bird back.



volkan -> RE: video: 20 ft wingspan B-24 crash on maiden flight.... (9/27/2004 4:46:03 PM)

quote:

ORIGINAL: randall1959

It kinda makes me wonder if the plane wasn't really underpowered to begin with if it only took one guy to hold that massive bird back.


that also got me worried!! what if he left go!! all those people right in front on the props!!!!



volkan -> RE: video: 20 ft wingspan B-24 crash on maiden flight.... (9/27/2004 4:47:37 PM)

quote:

ORIGINAL: teryn1-RCU


NOTE: if bandwidth gets exceeded due to excessive downloads, I will have to pull the video off server til next month. you will know this has happened when you are not able to get the file.


Let us know, and i will put it up on my server.



MikeMc -> RE: video: 20 ft wingspan B-24 crash on maiden flight.... (9/27/2004 5:21:31 PM)

Just a few random thoughts...

1. Note how safety was the highest priority. Engines run up with the nose pointed right into the hanger with pilot and others 3 feet in front of 4 giant props.

2. Again safety. Note how on takeoff the plane was coming almost directly at the camera man.

3. Most importantly. The B-52 and now this. It's just not acceptable. When you crash something like this make 100% sure you get the impact on video. No going down behind trees or car.



teryn1 -> RE: video: 20 ft wingspan B-24 crash on maiden flight.... (9/27/2004 6:43:59 PM)

quote:

ORIGINAL: volkan

quote:

ORIGINAL: teryn1-RCU


NOTE: if bandwidth gets exceeded due to excessive downloads, I will have to pull the video off server til next month. you will know this has happened when you are not able to get the file.


Let us know, and i will put it up on my server.



Thanks, will let you know. In the last posts you guys are hitting on the main points. Notice that the pilot didn't even give himself the benefit of the doubt on using the full runway.



Soar_dude -> RE: video: 20 ft wingspan B-24 crash on maiden flight.... (9/27/2004 6:50:46 PM)

My 2 cents not enough airspeed and then tip stalled maybe a engine failure on the port wing. Man I cannot believe all the BIG plane carnage lately.

Soar Dude



teryn1 -> RE: video: 20 ft wingspan B-24 crash on maiden flight.... (9/27/2004 6:55:44 PM)

My friend videotaped the flight and we watched it on TV. A lot more detail can be seen, like full right aileron. On the TV, I could not detect rudder inputs during the whole flight. But you can see a noticable yawing moments, perhaps from too much thrust on the right side or a crooked tail. Yawing moments are known to produce rolling moments through coupling. The yawing moments induced a roll too strong for the ailerons to overcome. Right rudder input could have corrected this problem. It did seem a bit underpowered, exacerbating the problem more. The plane was not tail heavy, as I helped determine the CG weeks before the flights.



randall1959 -> RE: video: 20 ft wingspan B-24 crash on maiden flight.... (9/27/2004 7:04:21 PM)

What kind of engines was he running on it? I've seen a 30 ft B29 fly at Ankeny, Iowa and they reported that it had four 100cc engines. I personally think the aircraft was simply underpowered and the guy just crowded it a tad too much on takeoff. Maybe if he allowed it to gain a bit more airspeed on climbout, before he made that fatefull turn, the outcome might have been different.
Also, what was his experience with the really huge stuff? The really large planes require a whole different style of flying. I asked about the B 29 and they said they only flew it off hard surfaces as to allow it time to accelerate properly on it's takeoff.



erbroens -> RE: video: 20 ft wingspan B-24 crash on maiden flight.... (9/27/2004 7:07:14 PM)

Testing a flex wing giant prototype b-24 , with people on the take off path and tip stalling it behind the parking lot could hardly be classified as an accident... seems that those guys are overconfident of their luck! glad that no one got hurt.

Rgds, Enrique



randall1959 -> RE: video: 20 ft wingspan B-24 crash on maiden flight.... (9/27/2004 7:11:07 PM)

That strip did seem to be in an area that was a bit crowded to say the least, especially with a project as complicated and massive as that one. I'da taken it somewhere else, like maybe try to get permission from a local small airport, where there are wide open spaces in case of an unforseen emergency.



MikeMc -> RE: video: 20 ft wingspan B-24 crash on maiden flight.... (9/27/2004 7:11:09 PM)

too much money + too much time - common sense = great video

Call me next time these guys fly something.



teryn1 -> RE: video: 20 ft wingspan B-24 crash on maiden flight.... (9/27/2004 7:15:29 PM)

quote:

ORIGINAL: MikeMc

too much money + too much time - common sense = great video

Call me next time these guys fly something.



LOL, you're killin' me, I have never laughed so hard.

He had two different types of engines on the plane. Two of them were Zenoha's and two Quadra's. They were in the 40 cc range (whatever 40 size those engines come in, I don't remember). I don't think he tached the engines that well (or at all) the day of the flight, so I have to be believe that the yaw on takeoff came from asymmetric thrust. From a systems point of view, this airplane was surely lacking. It's lucky it even got off the ground.



randall1959 -> RE: video: 20 ft wingspan B-24 crash on maiden flight.... (9/27/2004 7:26:28 PM)

Yea, 40cc engines are in my oppinion way too small for that monster. Should have at the very least used matched G 62s. Surely he didn't have two of one brand on one side and two of the other brand on the other. I'da had at least two quads on outboard and two zenoahs inboard or vice versa. Oh well..........



teryn1 -> RE: video: 20 ft wingspan B-24 crash on maiden flight.... (9/27/2004 7:32:50 PM)

he had these engines (and other other systems) laying around from previous projects and threw them onto the airplane. That's why there is a mix of engines.



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