Comments on: Episode 10: Explosive Decompression, Frog Giggin’, Rear Axle

By: Marion

Marion — Mon, 16 Apr 2012 07:25:02 +0000

Gracias por apoyarnos. Quiero reenmeodarlcs que visiten y se unan a la Pc1GINA OFICIAL de Need for Speed World en ESPAd1OL en w w w . facebook . com / NeedforSpeedWorldEspanolEstaremos sorteando cf3digos para coches/carros/autos entre todos los fans!!!!Luego de esto, estaremos llevando divertidos concursos a cabo. Por ejemplo, vinilos y algunos? otros cf3digos promocionales sere1n ofrecidos.a1Contamos con tu participacif3n!a1Hasta pronto!

By: Aaron

Aaron — Tue, 29 Nov 2011 13:49:10 +0000

Bertie the Bunyip knows what hes on about

By: Tim Buell

Tim Buell — Mon, 04 Jul 2011 12:22:53 +0000

My dad and a couple of his friends ripped the axle from a police car in Williamston,MI sometime between 1940-1950. I wish I could find an article about it in the Lansing State Journal.

By: Lorne

Lorne — Tue, 31 May 2011 01:38:21 +0000

I agree with Don Ramsy. The feusalage used was not full size it was done on the ground without air travelling passed it at typical jet pace. Although at low pressure there would be so much more air to be forced out of a small hole while a vaccum would be created by the air rushing past it on the out side. Some things just need to be done full scale to be busted or confirmed.

By: Don Ramsey

Don Ramsey — Sat, 12 Feb 2011 10:16:32 +0000

As Lars says, your experiment was done at ground level where the air pressure was the same inside and out side, if the experiment had taken place at 35.000ft the aircraft decompression would drag anything near the rupture of the aircraft out of the aircraft making the hole bigger. (but not an exlposion).

By: Gord

Gord — Tue, 29 Jun 2010 04:56:57 +0000

James Bond got it wrong again: “Goldfinger” really sucks!

By: troy martin

troy martin — Sun, 02 May 2010 14:37:46 +0000

rear axle should work just like in the movie if a leaf spring car is used.

By: Jim Dixon

Jim Dixon — Mon, 26 Apr 2010 20:52:24 +0000

I know that “frog gigging” means hunting frogs with a “gig,” or forked spear. Does it have another meaning? Why is frog-gigging mentioned in the title of this episode? I don’t see any connection.

By: Bertie the Bunyip

Bertie the Bunyip — Sun, 28 Mar 2010 15:45:43 +0000

One, the B24 was not pressurized, the B29 was, however.
Pressurisation can compound damage suffered from a gun or explosive device. Typical modern aircraft are pressurised to around 8.5 PSI or so, and while this may not seem much, if you translate that into something the size of a passenger entry door, say 3200 sq inches, you’re looking at a considerable amount of force. In this example, about 27,500 lbs, which gives some idea of the forces involved.
Several airplanes with structural design flaws were lost this way in the early days of pressurised flight, most notable the Dehavilland Comet, two of which were lost when a fracture occured at the corner of a panel used to cover a navigation antennae.More recently, a fatigue crack expanded rapidly on a Boeing 737 in Hawaii causing the top half of the fuselage to seperate. This airplane survived, incredibly, but most that had similar serious damage did not. A JAL 747 for instance as well as a Taiwanese 747 both bet their doom because of a poor repair done on the pressure vessel of the aircraft. The speed of the passing airflow is not a significant factor in the differential of the inside and outside of the cabin and a ground level test where the cabin is pumped up to the pressure experienced in flight is valid as near as makes no difference.
The preceding statements, notwithstanding, a bullet hole or even small explosion in a non critical area of aircraft skin is unlikely to cause enough structural damage to allow the hole to cause a massive rupture of the pressure vessel. Like most of these things, though, hit it in just the right spot under just th eright conditions and add in a bit of fatigue or damage in the area and it is entirely possible that the aircraft will break up in flight.

By: leon

leon — Wed, 13 Jan 2010 23:08:48 +0000

Hi about the axils being yanked out, this happened to me twice. I had a 72 for pickup with no rear bumper, I was in the process of pulling out a palm tree with a heavy cable attached to the axil, I performed slow tries with the granny gear only to leave tires smoking and spinning, I had the bright idea to use my truck’s weight using distance and speed, I ended up destroying my leaf springs parking cable and shocks the axil bounced back into the tree. the second time I was driving my jeep wrangler on the San Diego highway in California, was going 80 when I saw several stopped cars and a flipped over tow truck, my big tires whent over the trucks mechanical equipment and sent me atop the center divider , the center divider tore my rear axil off, the jeep ended up in the center of the other direction , I was able to drive/drag to the side with my front axil. I still drive that jeep.