A number of people have either sent me the article or sent the link as they know of my enthusiasm for Aptera. It is unusual for a paper to allocate so much space for an in-depth article. The author is an environmental reporter so she must have felt strongly about the potential contribution of the Aptera to repairing the environment and made a strong argument with her editor
I hesitated too as it was their second run at it, plus the Elio & “other” EV vapourware. I waited but also concluded that even if I was first, given I’m from Canada there would be a small delay on priority; at the beginning anyway.
That said, I’m fully committed to buying two fully loaded (identical) ones with all options & would pay right now (today) to get A.S.A.P.; tomorrow (PLEASE) 😜🇨🇦. We’ll fly in, then fly out “wingless” with both. Can’t wait but patient as necessary.
The answer to your question is yes the same formula using different values for some variables.
Both air and water are considered “Fluids” in the calculation. When calculating for air, the viscosity variable is 1. When calculating for water the viscosity variable is 1000 as water is 1000 times for viscus than air. A first year physics book, or of course Wikipedia will have the formula which is to complex to paste here. The drag coefficient is composed of frictional drag (viscous drag) and pressure drag (form drag).