Nature is responsible for the most energy efficient flight, according to an investigation of albatrosses, butterflies and nine different human-engineered flying machines.
Updated Nov 24, 2020 We estimate that a record-breaking two-person paramotor: covered around = 0.36 m/kJ and moved mass at around 0.058 – 0.10 kg⋅m/J Details Paramotors are powered parachutes that allow the operator to