ajdelange
Well-known member
- First Name
- A. J.
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- Dec 8, 2019
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- EE (Retired)
No doubt that energy that goes into splattering a raindrop into a thin film is more than the energy required to do that to the same volume of air so no question that rain adds even more drag but I was thinking of the energy used to push even a thin film of water on the road surface out of the way. Power consumption is noticeably higher on a wet road surface than a dry one.
Higher humidity, OTOH, is an advantage (unless you are those hapless pilots at SFO) as it renders air less dense thus reducing drag (and as those poor blokes discovered, lift).
Higher humidity, OTOH, is an advantage (unless you are those hapless pilots at SFO) as it renders air less dense thus reducing drag (and as those poor blokes discovered, lift).