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Old 01-29-2019, 07:26 PM
LeeR's Avatar
LeeR LeeR is offline
Retired with Way Too Many Kits
Join Date: Jun 2007
Location: Colorado
Posts: 1,913

Originally Posted by ghrocketman
One great boost glider you could clone is the Estes Dragonfly.
Mine always turned in good times.

Iíve also got a Dragonfly. Excellent little glider.
Lee Reep
NAR 55948, L2

Projects: Super Sky Hook, Estes Saturn V, Astron Farside-X
In the Paint/Detailing shop: Estes Saturn 1B
Completed!: Der Saturn Max
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Old 01-29-2019, 07:34 PM
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K'Tesh K'Tesh is offline
Seagulls Beware...
Join Date: Apr 2013
Location: Subject to Change
Posts: 861

Doug Holverson (sp?) posted the Swinger's fin templates that you could use to clone the design on TRF or FB. I can't remember which one and I can't access WiFi from this hospital, nor use cell data on my computer.

Dreaming of making the rockets I dreamed of as a kid (and then some).

"The Guide says there is an art to flying", said Ford, "or rather a knack."
"The knack lies in learning how to throw yourself at the ground and miss."

Launching is Optional... Landing? That Depends on Trees.
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Old 01-29-2019, 08:14 PM
aeppel_cpm aeppel_cpm is offline
Join Date: Apr 2013
Location: Burlington, WI
Posts: 474

Charles McGonegal
AEppelTreow Winery & Distillery
Ad Astra Tabernamque!
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Old 02-19-2019, 11:22 PM
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MarkB. MarkB. is offline
Drinks Dos XX w/ a squeeze of lime
Join Date: Feb 2008
Location: El Paso
Posts: 883


Just to close the loop on this thread, I finally launched all of the stuff I mentioned here except for the parasite glider I designed as it got left at home. (It'll fly next time)

So what were the results?

Well, of the two pod-gliders, the FlyBaby and the Semroc Swift, the FlyBaby flew better, hands down. In fact, the Swift separated from its pod shortly after burn out, which of course, sent the pod tumbling down and the glider didn't fly all that well from there. The FlyBaby needs a little less left trim, but flew well. I have a picture of it flying, below. It made two more 360s from that altitude. I don't know how good 48 seconds on an A8-3 is, but it was cool to watch and I was totally pleased. My launch crew thought it was pretty darn cool.

As to the parasites, perhaps the key was the Glider-Launching-Rocket or GLR. It flew four times, once with no gliders, then twice with the two small gliders and then once with the big Enerjet Pterodactyl. At the end of the day it was missing a glider lug (of three) and the chrome paint was pretty beat-up, but other than that, it was OK. The X-13 and Firefly both flew well but the Firefly landed first both times. Even though the X-13 was Monokote covered, it was lighter than the dope-and-tissue covered Firefly because it needed no nose weight. I think that was reflected in the performance. More tweaking is needed as I think there is more performance in there for both. I think I could get 30 seconds on the X-13 without too much trouble if it were launched alone on the GLR on a B6-2 . The picture is kind of cool in that it shows one of the gliders flying by the parachuting GLR with a few wadding clusters falling higher up.

Which leaves the Pterodactyl. From test-flying in my backyard, I knew it was a little nose heavy but I thought it would glider better from higher up. I was wrong. It came screaming down like the lifting body at the beginning of the Six Million Dollar Man, hit a small rock (in the desert! Go figure) and tumbled over a few times. It now has a dent in the nose which I'm going to try and steam out and then were going to get a much flatter glide in the backyard before we try again.

On the plus side, I'm happy that the smallish GLR can launch the Pterodactyl. The GLR is significantly smaller than the big Enerjet E and F powered monsters the Pterodactyl was designed to piggyback. The downside is I'm tempted to recreate one of those big monster boosters, get an Enerjet hat and scare the children at the next launch.
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Identifying a problem without proposing a solution is just whining.

NAR 79743
NARTrek Bronze
SAM 062

Awaiting First Launch: Excelsior/Semroc Scrambler; Rescue Sandhawk; SS-520-5; Rescue K-25 Arcas; mini V-2; Fly Baby; Centuri Nike-Smoke; Vashon X-13; Estes Firefly; Semroc Swift; Glider-Launching-Rocket; Black Hole Probe; Enerjet Pterodactyl
Finishing: Blossum
Repair/Rebuild: MPC Nike Smoke
On the Bench: LTV Scout F; 1/10 Phoenix; 3" Bertha; Nike HTT
Dream Stage: Big R-7
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Old 02-20-2019, 04:58 PM
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Chas Russell Chas Russell is offline
Retired Missile Technician
Join Date: Mar 2005
Location: Fort Worth, TX
Posts: 876

Thank you for posting the pictures. Since I designed the Fly Baby for use with B4-2 motors, I would say that 48 seconds on an A8 is great. A little less turn as you noted and you will have to be aware of thermals.

Charles Russell, MSgt,USAF (ret.)
NAR 9790, Lvl 1
SAM "Balls Three"
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Old 02-20-2019, 08:48 PM
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ghrocketman ghrocketman is offline
Join Date: Jul 2005
Location: Michigan
Posts: 8,977

You NEED a 29mm powered Enerjet Aerodart to properly launch the Pterodactyl.
When in doubt, WHACK the GAS and NEVER touch the brake !!!
No Harm=NO Foul advocate

If you are NOT FLYING LOW in the left lane, you need to GET THE #$&@ OUT of it !

Yes, there is such a thing as NORMAL
, if you have to ask, you probably aren't
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