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- From: Michael F. Kamprath <kamprath@space-grant.sprl.umich.edu>
- Newsgroups: sci.aeronautics
- Subject: Re: Controlling Airship Lift
- Date: 23 Jan 1993 21:18:22 GMT
- Organization: University of Michigan, Aerospace Engineering
- Lines: 26
- Distribution: world
- Message-ID: <1jscmuINN5o9@srvr1.engin.umich.edu>
- References: <1993Jan21.074446.15421@nuscc.nus.sg>
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- X-XXMessage-ID: <A7872133D401C4FC@sprl-mac2016.sprl.umich.edu>
- X-XXDate: Sat, 23 Jan 93 22:22:11 GMT
-
- In article <1993Jan21.074446.15421@nuscc.nus.sg> Perry Morrison,
- swkmorri@nuscc.nus.sg writes:
- >Some time back I posted a query about dirigible/blimp control surfaces.
- >Now I have another query- could a helium filled airship control its
- >lift by having some internal heat delivering device such as an electric
- >radiator.
- >
- >I'm aware hot air balloons generate lift by heating the enevelope with
- >LPG flame. Could sufficient expansion be delivered by an electric/non
- >combustion method?
- >
- >cheers
- >Perry Morrison
- >
-
- Lift is not a good choice of words to describe why hot air/helium balloons and
- dirigibles "fly" -- try buoyancy.
-
- Anyways, yes they can, but an electric heater would weigh temendous amount.
- It would probably weigh less just to bring more helium along for the ride.
-
- ======================================================================
- |Michael F. Kamprath | The University of Michigan |
- | kamprath@space-grant.sprl.umich.edu | Aerospace Engineering |
- | kamprath@engin.umich.edu | Graduate Student |
- ======================================================================
-