#4. The Joby tilting front propeller location is being standardized as is also used by Archer, Vertical Aerospace, Supernal and now Wisk. With this configuration, the propulsion system suffers from a major disadvantage in transition, namely when the power requirements are at maximum. At the beginning of the transition, the wings are blown from top to bottom and an increased pressure appears on their upper surface instead of creating a depression (as is desirable for an efficient wing). Consequently, the demand for power increases even more. They still fly due to the excess power for which they are designed, but the flight is inefficient in transition. Moreover, the number of tilting mechanisms is big, increasing the weight, complexity, and cost of the vehicle. There are a number of more efficient configurations and for sure the Joby solution will be not the dominant technology of the future.
#4. The Joby tilting front propeller location is being standardized as is also used by Archer, Vertical Aerospace, Supernal and now Wisk. With this configuration, the propulsion system suffers from a major disadvantage in transition, namely when the power requirements are at maximum. At the beginning of the transition, the wings are blown from top to bottom and an increased pressure appears on their upper surface instead of creating a depression (as is desirable for an efficient wing). Consequently, the demand for power increases even more. They still fly due to the excess power for which they are designed, but the flight is inefficient in transition. Moreover, the number of tilting mechanisms is big, increasing the weight, complexity, and cost of the vehicle. There are a number of more efficient configurations and for sure the Joby solution will be not the dominant technology of the future.