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A design to generate UAV electrical power in flight

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arturi
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re: A design to generate UAV electrical power in flight
arturi   6/7/2012 10:53:11 AM
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prabhakar, as soon as current starts to flow the rotating blades have to overcome a magnetic field and therefore the mechanical resistance is magnified. Hence more fuel is consumed. There's no free lunch there.

@NEALETHOMASnet
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re: A design to generate UAV electrical power in flight
@NEALETHOMASnet   6/7/2012 10:46:06 AM
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Amazing that this thing got editorial endorsement considering its amateur adoption of aerothermal analysis relying on CFD (C=Contrived) that cannot conceivably capture complexities conveyed in pictures, not just unfaired facets of equilibrium orientation but more importantly abrupt departures encountered as gust response never mind comment "curl back very symmetrically" without conceding punitive loss factor in all U-turned flow. Reinforced by remarks on meagre recovery energetics from chemical potential unqualified by reference to maximal reality cap 40-50% dictated by law of diminishing returns aka 2nd Law! It's a software sales pitch for a caricaturisation code, one of many in the market and all liable to mislead inexperienced individuals when used away from calibration closure conditions, almost invariably inevitable when any complexity is encountered. I've seen consequences at first hand following fatal accidents when commissioned to critiquise such code variants adapted as nuclear and hydrocarbon safety simulators, also persistence of flawed scalings for years after errors and omissions were documented in more sophisticated literature. Overall then, worth no more than gamma as an auldskule english engineering finalist hons project! @NEALETHOMASnet

prabhakar_deosthali
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re: A design to generate UAV electrical power in flight
prabhakar_deosthali   6/7/2012 7:11:27 AM
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This idea of harvesting the waste energy is really good. By seeing the roof top mounting of this generator, I thought - why cannot be a wind energy convertor be installed for generating electricity? When the vehicle is cruising at some constant speed , we will be able generate a stable voltage using a small wind mill. It should also be possible for Helicopters to harvest energy from their big rotating blades

DrFPGA
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re: A design to generate UAV electrical power in flight
DrFPGA   6/6/2012 4:39:09 PM
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Thanx for the details on the mechanical, electrical and thermal aspects of the design. Too often we only see one aspect, and in this case the interactions were very critical.

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