Discussion
normalbloke said:
I don’t see a lot of redundancy built into that. Can I stand on the sidelines and watch until they’ve got a few thousand hours under their belt?
I'm sceptical how quickly the paired motor can spool up to take the load on a corner should one motor be lost, however the company does appear to be thinking along the right lines. I look forward to video of the emergency case qualification tests.In the meantime, here is one of their graphics:
Mabbs9 said:
Zoon said:
It'll glide as well as a helicopter...
I feel it'll be rather less good than a helicopter. No momentum in the blades (well a lot less) plus no option to use forward speed to autorotate.The sort of redundancy it needs is to have the upper and lower motor sets driven by separate batteries, through separate controllers with the wiring as spaced as far apart as possible. You've still got the possibility that an impact with a foreign object would take out the upper and lower rotors on a corner simultaneously.
Each type of aircraft has its own set of hazards. Whether this is safer or more dangerous than a helicopter with its critical gearboxes remains to be seen. It is easy to be critical of new types of air vehicle, whilst ignoring the fact that the aircraft we have already, despite all the design, maintenance and crew training, do also crash sometimes.
Each type of aircraft has its own set of hazards. Whether this is safer or more dangerous than a helicopter with its critical gearboxes remains to be seen. It is easy to be critical of new types of air vehicle, whilst ignoring the fact that the aircraft we have already, despite all the design, maintenance and crew training, do also crash sometimes.
normalbloke said:
No, it really won’t.Most helicopters glide very well. In many situations I’d rather be in something rotary winged than fixed given a complete loss of power.
Provided they're in the right bit of the performance envelope; engine failure while low and/or slow generally doesn't end well.hidetheelephants said:
normalbloke said:
No, it really won’t.Most helicopters glide very well. In many situations I’d rather be in something rotary winged than fixed given a complete loss of power.
Provided they're in the right bit of the performance envelope; engine failure while low and/or slow generally doesn't end well.46and2 said:
It worries me that it can't glide/autorotate, or can it?
I've seen video where a guy cut the blades off one corner of a drone and it flew fine.As long as the power rating has sufficient capacity then the same should apply to this machine. This is no different to a comercial aircraft continuing to fly having lost an engine.
Steve
Steve_D said:
46and2 said:
It worries me that it can't glide/autorotate, or can it?
I've seen video where a guy cut the blades off one corner of a drone and it flew fine.As long as the power rating has sufficient capacity then the same should apply to this machine. This is no different to a comercial aircraft continuing to fly having lost an engine.
Steve
Steve_D said:
I've seen video where a guy cut the blades off one corner of a drone and it flew fine.
As long as the power rating has sufficient capacity then the same should apply to this machine. This is no different to a comercial aircraft continuing to fly having lost an engine.
Steve
Yes but commercial aircraft have wings/rotors providing lift, the body of this vehicle provides no lift so in the event of total power loss or more than one corner being lost, it may not provide symmetrical lift or any lift at all. As long as the power rating has sufficient capacity then the same should apply to this machine. This is no different to a comercial aircraft continuing to fly having lost an engine.
Steve
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