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#14
January 27th 18, 06:42 PM
posted to rec.aviation.soaring
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Electric Towplane sets a new climb record
On Tuesday, January 9, 2018 at 6:30:12 PM UTC-5, Nick Kennedy wrote:
Is this the future? No more shock cooling here! https://newatlas.com/siemens-airbus-...-glider/48806/ Energy regeneration idea raises an engineering problem: how do you optimise the total energy used? A well designed prop for traction ( 80-90% power transfer) will be pretty poor as a wind turbine . A PhD to be won for designing a prop which maximises the energy transfer. This includes glider in the equation. JMF 
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