3 ms·
Ecomax helicopter is about the same size (10m rotor dia), is targeting similar flight time (40+20mins) and payload (600lbs). So not obvious how much the differe
by zokier 5y ago
Ecomax helicopter is about the same size (10m rotor dia), is targeting similar flight time (40+20mins) and payload (600lbs). So not obvious how much the difference between single vs multi rotor is significant here.
https://www.forbes.com/sites/erictegler/2020/09/30/this-may-be-what-real-electric-urban-air-mobility-looks-like-at-first-its-both-familiar-and-a-little-weird/?sh=64cd935c4ccd https://www.forbes.com/sites/erictegler/2020/09/30/this-may-...
- baybal2 5y agoThis one will not fall out of the sky like a brick if the electrical failure will occur I myself researched how to detect quadcopter failure, and land them in a less catastrophic way. The easiest way to survive a single motor failure, is to spiral your way down at full motor torque, but it will not save you from an electrical failure in the main DC-DC — where they most often occur.
- wongarsu 5y agoI would assume you can make reasonable design changes to fix those cases though? To survive motor failures more gracefully add more props. With a hexacopter you should be able to switch to four props if one fails. Or use one of those designs with for pairs of counterrotating props.
- heyflyguy 5y agoI was about ot make this comment. Multirotors do not seem to auto-rotate.
- Robotbeat 5y agoPretty sure a total electrical failure will preclude a successful autorotation failure on a swashplate-based drone as well as you still need to power the actuators (and the avionics). So redundancy (including in the DC bus) is just as valid of an option as autorotation is… more so as you could continue powered flight and means you can survive blade failure, etc.