Aerodynamic Propulsion System
The blades of ANAFI USA’s propellers have been conceived by biomimicry: they are inspired by the knobs of the anterior edge of the pectoral fins of humpback whales. Each propeller consisting in two blades is simply screwed on. From a flight perspective - ANAFI USA outperforms drones which are 1.5 times heavier and twice as cumbersome.
Advantages of "Humpback Whale Blades"
The conception of the "Humpback whale blade" minimizes the transitory separation of the boundary-layer for each blade, to recover thrust at constant motor rotation speed (rpm) – or alternatively to keep thrust while lowering the motor speed; and minimize the sensitivity of the raising of mechanical power when blades twist. Therefore, with a lower rotation speed for a higher engine torque, ANAFI USA emulates a rotor whose power is higher than the theoretical capacity of its diameter.
Additionally, the tonal sound power of the anterior edge of the blade, is minimized, lowering the noise of the flight. ANAFI USA motors are powerful (46 W) with a 70 % yield (mechanical power divided by electrical power) when hovering; they have been conceived to optimize the blades’ characteristics on the whole flight range. ANAFI USA has the best weight/flight time ratio of the industry: its 32 minutes flight time, its low weight (501 g) and the high yield of its conversion chain enable the drone to fly fast (54 km/h) and far (theoretical outreach: 17,4 km at 40,6 km/h).
- Wind resistance: 33.5 mph (54 km/h)
- Sound power: 79 dB