Answer Happy

Based on your knowledge of propellers and rotors, which of these propellers is likely to have the highest pitch? A fixed-pitch propeller for a fixed-wing UAS A fixed-pitch rotor for a multirotor UAS A variable-pitch helicopter rotor, with the collective set for a slow climb A variable-pitch helicopter rotor, with the collective set for a slow descent Question 4 Why are propellers not used on high-speed transport aircraft? The tip Mach number would be too high The tip Reynolds number would be too high Available materials aren't strong enough to withstand the forces generated at high speeds It is too difficult to match propeller speed to engine speed at high forward speeds 1 pts