/diy/ - Do It Yourself

>>1448860
At best, you'd get no more than about 15-20 mins of actual flight time out of that. The main problem is the lack of anything using air for lift, like a wing or rotor. Due to this limitation, there's nothing in existence with enough safe power density in which to fuel the device for very long at all. Due to this limitation, the usefulness of such a device is also extremely limited. The best use, anyone has brought up in past threads, has been for first responders getting to local emergency situations. Even then it'd be hard to beat a standard Ambulance or Firetruck. Thus, it is further regulated to areas of less or no road access.

FYI, there are much better designs with better efficiency and range...

>>1448873
>Are you an entomologist?

Not him, but I am. "Bugs" use their Elytra to cover their real wings. The underwings are at the proper humeral angle in which to pivot and oscillate in order to achieve normal flight. Flight dynamics are rather simple, yet elegant. Mr. Grebennikov's platform if "fake" and nothing more than a powered pogo stick at best and him just jump-lifting it at worst; photographed while bouncing.

>>1345597
>more dangerous

Actually, it is 2000% safer than that leg cutter the OP has in the image. The weight distribution is also much better since it is lower in respect to the props. Anything where the thrust is lower than the center of weight will work harder to correct balancing issues and require more energy. This one also looks like it lasts a shit load longer for flight time, probably the max you can squeeze out of today's tech and not be called a normal helicopter. This being a, "hexacopter". Of course it isn't a drone anymore since there's an on-board pilot.

>>1345631
>"Rockets will never be good enough to fly to the moon!"

You don't know shit about flight dynamics, battery technology, or power density of energy storage. The day we have hoverboards and hoverbikes that actually work for anything longer than a few scant minutes is the day we've cracked some real wizard magic power source and all our technology will be like fucking sci-fi. Ironically, that will probably be the day we don't need rockets to reach Earth orbit.

>>1345636
>>1345670
The best they can do is to drop weight, which isn't the point of any of this. Electric motors are almost as efficient as they can possibly be. The last few % of efficiency won't help lift much more weight or extend flight time by very much. It is all now down to power density, in regard to these extremely poorly designed flying machines.

Graphene super caps would be nice, but even those are not all that great and not dense enough for what is really needed.

>>1345656
You can also get a Mosquito helicopter for under $20k. Their XEL model doesn't require a pilot's license.

>>1321621
It isn't difficult provided you have a harness to keep you in place so you can learn the controls. After that it is more about not running out of fuel while you are in the air.

>>1247205
>We may not have jetpacks

Well, there's hoverboards I guess.

>>1179998
Mosquito XEL doesn't because of the added safety feature.