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The mkiv Supra Owners Club

2JZ powered Boeing 747-400


Gaz6002

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Gas motorsport have got 2041 hp out of a 2jz so it would take about 43 2jz engines to enable the 747 to fly.

 

Would you need 44?

 

A hercules has 4 Alison V12's with about 16,000hp between them and flies at 370mph up to 10,000 meters with a 2000 mile range, and weighs 70 tons - surely the Hercules would only need 16 2jz's to fly?

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Would you need 44?

 

A hercules has 4 Alison V12's with about 16,000hp between them and flies at 370mph up to 10,000 meters with a 2000 mile range, and weighs 70 tons - surely the Hercules would only need 16 2jz's to fly?

 

Naaaaah maaate a Herc has 4 Allison turboprops of about 4500shp each, Ive changed a couple lol. It also weighs 30 tons :)

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Naaaaah maaate a Herc has 4 Allison turboprops of about 4500shp each, Ive changed a couple lol. It also weighs 30 tons :)

 

:yeahthat:

 

The allison V12 was a crap american aero engine from the second world war. It was fitted to early P51 Mustangs (which were crap), until packard built the RR Merlin under liscence and it became really good

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Would you need 44?

 

A hercules has 4 Alison V12's with about 16,000hp between them and flies at 370mph up to 10,000 meters with a 2000 mile range, and weighs 70 tons - surely the Hercules would only need 16 2jz's to fly?

 

A 2JZ making 2000hp at sea level will never make it at altitude, even if the air temp drops and density increases. Piston engines get worse the higher they go whereas turbine engines get more efficient the higher they go (to a point obvioulsy).

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Still not long enough, and then the layout would negate the lift properties of the wings anyway.

 

And all this weight would have to be carried by nothing other than the main spars...

 

There's plenty of room the wing is huge and they dont necessarily have to power their own seperate props :D.....ridiculous thread

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Still not long enough, and then the layout would negate the lift properties of the wings anyway.

 

 

wash from the props would help the lift created by the mainplane especially at the roots, control surfaces might be affected though with that many objects on the trailing edge. might be better to have 2 or 3 2JZ's powering a single large prop through a gearbox on the leading edge, at multiple stations along the wing.

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Naaaaah maaate a Herc has 4 Allison turboprops of about 4500shp each, Ive changed a couple lol. It also weighs 30 tons :)

 

Sorry, I meant turbo-props. Is the 70 tons the maxium take off weight? (got the figure from wiki)

 

I always thought forced induction resisted lowering of air pressure better than N/A's?

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