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  1. H

    Quad copter

    Perhaps The Moller SkyCar also has potential as a hybrid variant http://moller.com/dev/index.php/sky-car/m400-specs Paul Moller's Flying Car Dream - Part 3 : EVWORLD.COM
  2. H

    Quad copter

    I would venture to suggest that the DragonFly or variation of it probably does exist and is in secrete operation, either by the US military, DARPA or some private military equipment manufacturing corporation or even a private civilian general aviation manufacturer. It's 14 years since they...
  3. H

    Quad copter

    This is also a relevant factor that might influence the future aviation direction and play into favour with the quad / multi copter evolution. Next Generation Air Transportation SystemNext Generation Air Transportation System - Wikipedia, the free encyclopedia
  4. H

    Quad copter

    Hmmm. I guess they could sell $65 million in futures to investors to own a pre-deployment sky car sky way access certification licence. I mean there will be a limit to the number they can allow, so they could either sell them quick at $1 a piece or auction them all off to the highest bidders...
  5. H

    Quad copter

    Even if they ran out of money, I would have expected some web sight updates. Some things don't take massive amounts of money to develop further. i.e. such as new software developments and algorithms etc... This makes me wonder if the military or other enterprise has secretly bought them out...
  6. H

    Quad copter

    I think if you could get 30 min flight time, there could be a small market for it, but FAA or other authorities might require a longer flight time for it to get certification. 10 minute flight at 100 kph would get you about 16 km distance in a straight line that's probably farther than the...
  7. H

    Quad copter

    Se also their home page; Trek_Aerospace_Home They have some impressive claims about shrouded propeller performance. Oddly their latest news was in April 2010 which makes me wonder what's happened between then and now? Trek_Aerospace_News Did they go out of business or did someone ( the...
  8. H

    Quad copter

    Quadrocopter failsafe algorithm: recovery after propeller loss Quadrocopter failsafe algorithm: recovery after propeller loss - YouTube
  9. H

    Quad copter

    Re: Quad / Multi Rotor Copter I might clarify that this one seen in the test as per below link apparently lifted 58.7 kg Very Impressive. This dude has progressed this concept further than I though it had been. Heavy lifting copters can apparently lift people
  10. H

    Quad copter

    Re: Quad / Multi Rotor Copter Dual Prop Quad Heavy Lift Quad 27kg by Quadzilla http://www.youtube.com/watch?v=h__tUDHEXCY#t=27 Actually it's an Octo-Copter with the motors mounted one on top of another for each corner. Does not use counter rotation.
  11. H

    Quad copter

    Re: Quad / Multi Rotor Copter This is interesting Heavy lifting copters can apparently lift peoplehttp://hackaday.com/2013/09/20/heavy-lifting-copters-can-apparently-lift-people/ Clearly people are busy beavering away with their homebuilt experiments, hoping to come up with something viable...
  12. H

    Quad copter

    Hey thanks for posting that link. Quite informative of how capable this control technology can become. I was very impressed with its stability control balancing that pole and the glass of water and the fact it wasn't even programmed to handle the glass of water. The cutting of the propellers was...
  13. H

    Quad copter

    I can see several pre-programmed flight management modes in an emergency VTOL landing scenario from an engine / motor out situation. To name just some modes; - Immediate horizontal stabalization mode. - Emergency VTOL landing mode. - Conventional landing mode. - Parachute mode. The decision to...
  14. H

    Quad copter

    Part of it is also understanding the probabilities. No system is perfect, so it's more a matter of getting the probabilities of failure down to a manageable level, just like any other aircraft design. If an A380 looses 1 engine or even two engines out of 4, it can possibly still fly depending on...
  15. H

    Quad copter

    I agree with you on that in terms of a quad rotor system being too risky in the event of rotor failure. The term quad copter is really just for point of reference. Yes it works and yes it's **** risky. Thus extending the concept is the direction the tech needs to go to make it a safer bet. i.e...
  16. H

    Quad copter

    I imagine stacked rotors could be problematic, however if they designed a custom motor that could have multiple rotors on the one shaft, perhaps it might be able to generate more thrust that way.
  17. H

    Quad copter

    It's on'y a matter of time my friend. The technology is already here. It's really a matter of cost. Like most new technology and ideas, they come at a premium cost. Over time though that changes. The model quads are getting bigger and bigger, so it's a matter of incremental steps that could see...
  18. H

    Quad copter

    We already have hybrid light aircraft emerging, so they will only improve from here. That's where the industry will "take off". It's just a matter of appropriate design to suit the E power technology. This tech is well and truly on its way now. Full scale hybrid electric (HE) VTOL has a great...
  19. H

    Quad copter

    No doubt there's lot of misleading information floating round. Time will tell as to what they achieve and when, however the view is batteries don't need the energy density to reach fossil fuel in order to offer comparable economies, due to higher efficiencies of EV technology and projected lower...
  20. H

    Quad copter

    You better tell IBM and Toyota and other developers that, before they invest more money then, if there's an obvious problem. :) If you can save them a billion, they might pay you a million or two, given the 10 billion dollar yearly market. The view is Lithium-air batteries have the potential of...
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