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When I checked the "new items" page at Hobbyking yesterday, I almost fell from my chair...
A HUGE 3m wingspan fiberglass UAV kit for $263 - $284, depending on the warehouse For some reason, it's not available from the international warehouse but from all local warehouses... Some features and specs from the website:
Features:
• Glassfiber/Ply Fuselage
• Fully Sheeted balsa/ply 2pc Plug In Wing
• Plug In V-Tail
• Huge Payload Capability
• Large Front and Mid-Mounted Access Hatches
• Heavy Duty Under-Carriage with Steerable Nosewheel
• Adjustable Motor Mount
• Large Air Intake & Cooling Duct for ESC/Motor Cooling
• Aerodynamically Efficient Airframe
• Flaps for Excellent Low Speed Handing
• Fast and Easy Build
Specs:
Wingspan: 3000mm
Length:1580mm
Weight: 5200g~5400g
Wing Area: 48dm2
Wing Loading: 108~112g/dm2
5 Channel
Requires:
Your own 6 Channel TX/RX
4 x 12g~16g MG High Torque Servo's, 3 x Standard Servo's
50mm Brushless Outrunner
80A~90A ESC
13"~15" Prop
UBEC
5s~6s Lipoly Battery
FPV Equipment/Camera
80~82mm Spinner
Now I'm waiting for someone to buy it, fly it and talk about quality and stuff :).
Comments
The price above varies a lot with the US$ going up or down. Most Important is, to make sure at point of ordering to have AU$ selected, because it always goes back to US$ after fresh login.
Since one gets logged out after a certain time not using it.
I made this mistake (lost about AU$45 this way) had AU$ selected, but after a while got logged out, and to order I just logged back in, but did not check that it went back to US$.
Because of oversize, delivery to Adelaide is 45 AU$. MIne cost going to in Adelaide 363 AU$ in total, so watch out for AU$ selected at point of ordering !!!
Don't ask for refund, is a waste of time.They don't even reply. However, HobbyKings technical advice (with Life Chat) and backup is great.
Hobby King is in Australia now.
Hobbyking Service CTR
38 Shelley Rd. Moruya
NSW 2537 CAN 145 381 228
Australia
Customer support with "life chat" is great for any technical help.
That link is: http://breakingdefense.com/2013/06/14/china-set-to-grab-uav-market-...
Looks very closely matched to the Chinese CASC CH-4 UAV. See article posted on Breaking Defense website. http://breakingdefense.com/2013/06/14/china-set-grab-uav-market-whi...
@Macboffin - your comment about shiny polished finish is incorrect. All modern high performance sailplanes have highly polished finishes which reduce skin friction drag and allows for laminar flow. Negative effects of rain, bugs, etc on the surface are insignificant for most airfoils. Some have issues, but that is the exception not the rule. I have no qualms at all about flying my full scale Discus sailplane through the rain....
Ordered one and was lucky to get the second last one in stock, can't wait for it to turn up. The oversize package was a bit of a price killer. But no pain, no gain. The spinner should be included, going by the pictures from HobbyKing. If the wing connection spar (carbon fiber rod) is not long enough I plan to put a longer one in. Mine will not butterfly. Will do some heavy testing on it, before take-off. Will keep you posted on progress. Hope it comes with instructions about weight and balance,. the last few different planes came with no instructions at all. lol
@Vova,
If you fly it with an APM please post a tlog and a video of it flying. I'd be very interested in knowing how well it flies.
Cheers, Tridge
I ordered two, one for beach flying ;p
Small addition to above, why does it need a spinner? To look even more pretty? Only a pusher type spinner would be useful, they are long and thin. But this is not in my opinion a useful airframe anyrate! more than fifty years in the UAV business have taught me that "Form follows function", ie airframe design should be the minimum aerodynamic form that can be wrapped around a sensor, power,comms package and deliver the required flight profiles of duration, speeds, heights, in proposed working environments, ie precipitation, temps etc.Anything else is a (possibly expensive" toy aeroplane.
A more subtle possible problem,( on top of suspect scaled aerodynamics, and floppy wings etc) it has a very shiny polished finish.Looks good, and eases removal of bits from moulds, BUT the aerodynamics and lift will go to hell if it flies through rain; the water will bead on the surface and upset things. Ask Bert Rutan abiut that, he had one of his foreplane aircraft go into an uncontrollable dive after flying through rain, could only pull out at low altitude when the foreplane surface dried out during the descent.Two fixes on that plane, matt the surface with sandpaper,(allows wet to sheet instead of beading) and fix a number of close spaced turbulators. I have suffered from the shiny finish-loss of lift myself.
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