Discussions

Possible UAV platforms

Posted by Joel on August 26, 2010 at 4:02pm
I was curious if any of you have delt with BanaHobby before. I also was looking for opinions on two different planes. Would either be okay for a UAV?

I plan on building an Easy Star or something similar for testing, but I may end up wanting to convert one of these to a UAV as well. I'm also considering trying a sailplane for longer flight time down the road.

BZ-117 Stealth Fighter:
http://www.bananahobby.com/1888.html




B2 Stealth Bomber: Several people have used the flying wings shape before. Not  sure how this would compare though.
http://www.bananahobby.com/1890.html



I'm not sure, but it seems that either(especially the bomber) would require a lot of tweaking since they are built differently than regular planes. Also i'm not sure about cargo space in either, and There is another Stealth Fighter at Nitroplanes which is similar to above but with 64MM fans:

http://www.nitroplanes.com/78a117-f117black-kit.html



Sailplane: EasyGlider Pro
http://www.hobby-lobby.com/multiplex-easyglider-pro_21724_prd1.htm

Videos:






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Replies

  • Stephen Wuest October 20, 2010 at 8:04pm
    Ducted fans are really inefficient.
    External props are more efficient.
    Pushers allow your sensors to look forward. Pullers mean that video has to look through props (bad).
    Electrics are quiet and clean, but diesel fuel stores more energy per weight than batteries (so endurance is a lot better than electrics).
    Big fuselages have a lot of room, but high drag.

    You'll have to decide your priorities, then try for the best compromise.
  • Tom Kopp October 5, 2010 at 9:48am
    DO NOT BUY! Me and many others have bought from Banana hobby and regretted it. Banana hobby sells junk and nothing but junk. Trust me, you can even look it up just by simply viewing most of their videos and reading the comments on you-tube. Most of their planes and electronics fail faster than you can blink.
  • Moderator
    Gary Mortimer August 29, 2010 at 10:58am
    We can get 30 km flights, depending on the prevailing wind by designing something for purpose. If you want an efficient airframe build your own!! There are hundreds of free plans out there.

    Room is dependant on your sensors.

    Speed endurance altitude can be a load of bull on lots of sites.

    Our new platform gets enough of a job done in 20 minutes at 60 kmh, but I would not say it had a range of 20km. Those 20 minutes are flown on standard lipos as well, not military one use, so many of the quoted airtimes you see are from those batteries.

    Good luck with your flying.
  • Joel August 29, 2010 at 10:08am
    I"m curious how much room is needed. I see that some people use a funjet or a flying wing successfully. A lot of commercial platforms go with a flying wing actually.

    Also I wonder how commercial electric uav's can get 30KM flights.
  • Developer
    Michael Smith August 29, 2010 at 10:01am
    Joel,

    None of those are going to be ideal, as they are all pretty tight on space. (except for the EZG)

    As for dealing with BH, they seem well-meaning but like any business working on thin margins, service has been a little erratic.
  • Joel August 28, 2010 at 5:30am
    No one?
This reply was deleted.

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