keta
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Joined: Thu Mar 24, 2005 7:14 am

Airships Payload And Power

Sun Jun 04, 2006 7:41 pm

Hi all, I'd like to know which is the maximum payload of the biggest airship, and its power requirements.
Where there's a will, there's a way
 
JHSfan
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RE: Airships Payload And Power

Tue Jun 06, 2006 3:42 am

Nice topic - the biggest airship in history or today?

Power requirements must depend on the size and shape of the airship in relation to the most extreme operation conditions and the desired performance - well I think that just about it, so to say.

 idea  BTW: Who will be the first to go mach 1 in an airship?  bouncy   Silly

Yours in realtime
JHSfan
Look at me, I´m riding high, I´m the airbornmaster of the sky...
 
dw747400
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RE: Airships Payload And Power

Tue Jun 06, 2006 6:14 am

Here is some data on the Zeppelin NT, which I believe is the largest airship currently in operation:

http://www.zeppelin-nt.de/pages/E/luftsch_u_zepp.htm

Details on Hindenburg are a bit sketchy. I turned up some data that suggests it had a useful load of up to 112 tons and that it had four 1200hp engines, but other sources dispute those claims.
CFI--Certfied Freakin Idiot
 
keta
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RE: Airships Payload And Power

Tue Jun 06, 2006 6:20 pm

Thanks a lot, it's just to make an idea. Wow, the Hindenburg could lift 112 tons! That's a lot, more than I thought. But the power is more than I thought, too.  sigh 

What I need is an airship with Hindenburg dimensions, but for less payload. If payload is less, power would be a little less. Not for lift, there is no power need for this, helium (or hidrogen in the Hindenburg) does it, but for propulsion.

Quoting JHSfan (Reply 1):
BTW: Who will be the first to go mach 1 in an airship?

Imagine a 200 m long monster flying at +1200 km/h. That would be an awesome sight! Maybe with some big rockets... Big grin
Where there's a will, there's a way
 
prebennorholm
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RE: Airships Payload And Power

Thu Jun 08, 2006 9:12 am

The Hindenburg engine is a beautiful masterpiece of a diesel engine. One example is on display at the Mercedes-Benz Museum in Stuttgart, Germany. Really worth a look in case you pass by Stuttgart.

Payload and fuel load is always a tricky thing to manage on an airship. The all up weight must always very nearly match the lifting capability.

For long distance flights (like the Hindenburg) gas has be be released from the balloons inside the main body to compensate for the weight of the burned fuel. Otherwise it would never be able to come down to mother earth again.

When fueled for the next flight new gas had to be added again.

The lifting capability of the Hindenburg was 242.2 tons, and with an empty weight of 130.1 tons it had an available lifting capability of 112.1 tons. But for a trans Atlantic crossing by far the major part of those 112 tons - maybe 100 tons including reserves for unexpected headwind - had to be used for fuel, not payload.

Fuel burn was approximately one ton per hour. That adds up when a flight lasts three days.

Yes, per seat/mile the Hindenburg was far less fuel efficient than the Concorde. Especially when considering the approximately two million cubic feet of hydrogen, which had to be released during such a crossing, as sort of "fuel".

The Hindenburg is still by far the largest flying machine ever made, length almost 900 feet and diameter 135 feet - roughly the same as the wing span of a Boeing 757.
Always keep your number of landings equal to your number of take-offs
 
keta
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RE: Airships Payload And Power

Fri Jun 09, 2006 6:08 am

Quoting Prebennorholm (Reply 4):

I didn't know the system of rigid airships to go up and down. What if they released too much, they couldn't lift up again?

I guess nowadays it's easier, since modern blimps have inside balloonets, so they can change their density.
Where there's a will, there's a way
 
prebennorholm
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Joined: Tue Mar 21, 2000 6:25 am

RE: Airships Payload And Power

Fri Jun 09, 2006 6:35 am

Quoting Keta (Reply 5):
What if they released too much, they couldn't lift up again?

Then they would swim.

It was also dangerous to release too little, or too late. Then they would climb too high, the reduced ambient pressure would make the balloons grow in size, and they might be destroyed by rubbing on the inside hull structure.

Yes, also an airship captain had a few things too look after.
Always keep your number of landings equal to your number of take-offs
 
COSPN
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RE: Airships Payload And Power

Sat Jun 10, 2006 5:25 am

Hope it gets in the Air soon www.worldskycat.com
 
jamesbuk
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Joined: Mon May 02, 2005 11:52 pm

RE: Airships Payload And Power

Sat Jun 10, 2006 5:38 am

Quoting COSPN (Reply 7):

I live over the road from the Cardington hangers and i remember all the hype about them building that prototype, also did you know that one of the hangers was bought for a measly 1 pound!! but in the contract it said that they have to pay for all renovations and its mandatory.

Rgds --James--
You cant have your cake and eat it... What the hells the point in having it then!!!
 
keta
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Joined: Thu Mar 24, 2005 7:14 am

RE: Airships Payload And Power

Sun Jun 11, 2006 6:00 pm

Quoting COSPN (Reply 7):
Hope it gets in the Air soon www.worldskycat.com

Wow looks great! I'd love to see it flying. What I'd love to see is a solar-powered blimb. If an airplane can do it, I guess a blimp would be much easier.
Where there's a will, there's a way

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