11-04-2007, 01:04 AM
Join Date: Jun 2005
Originally Posted by CPMcGraw
Got one of these in working order today, after picking up a dud yesterday. I wanted to see if I could come up with a better booster that would give some real performance, or at least gain some substantial altitude, compared to the booster you get with the camera. This first version is a throw-together, what-if type of design, and I'm just guessing about the actual weight of the camera. I have not yet weighed the payload to get an accurate value, but I'm guessing no more than 2.5 oz. It really doesn't feel that heavy, maybe just a little more than a hollow plastic NC of the same size.
The camera shoulder loose-fits into a standard ST-13 tube, so that's where I'm starting from. Other variations of this theme are coming, so this is just a beginning baseline.
Diameter: 1.34 (ST-13)
Fin Span: 4.84"
Weight: 3.31 oz (Camera estimated at 2.5 oz)
D12-5......1015'......Dv 26 FPS......48" x 3/16" Rod
Takes about 7.2 seconds to reach apogee, so the 12-18 seconds of record time should be enough to get a flight video.
Picked up my AstroVision today at Hobby Lobby with the 40% off coupon. Funny story ..... I took my wife with me to the Hobby Lobby in Hammond today. While I was in the check out line she glanced over at the price tag and said "Hey, how much is that rocket"? When I whipped out my 40% off coupon and it discounted the price of the rocket by $28.00 she said, "hey that's not such a bad deal". I sent her back with another 40% off coupon to pick up a pack of D12-5's.
I'm interested in this BARCLONE design and I'd like to build a dedicated D engine booster. I do want to fly the AstroVision at our launch Nov. 17th so I'll probably put it up on it's first few flights with my EnerJet 1340 booster with a Semroc EM-9115 adapter, since that's what I have already built with Semroc series 13 tubing. I'm interested to see the other booster designs you come up with.
Also, I weighed my AstroVision camera tonight on my scale and with the batteries loaded and flight ready it is 1.4oz. Much lighter than I thought it would be.
TRA# 677 L2
NAR# 85518 L2
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