Activity for user72590‭

Type	On...	Excerpt	Status	Date
Question	—	Aerodynamics of propeller vs screw/fin based aerial propulsion Would it make sense to use screw- and fin-like bending surfaces for propulsion (like what eels or the king of herrings have but in the atmosphere) instead of regular propellers or even flapping wings if you had super-strong materials that could change shape very fast? And if those materials had high ... (more)	—	about 4 years ago