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  #11  
Old 10-10-2011, 03:56 PM
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Carl@Semroc Carl@Semroc is offline
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Quote:
Originally Posted by jharding58
As you originally envisioned this, was the tube a constant diameter and then narrowed through the nosecone? Or did the airframe narrow from the tail cone to the nose?

It is conical. Photo from side attavhed. I have been meaning to put it in rocksim. It is in 3ds Max now.
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  #12  
Old 10-10-2011, 04:28 PM
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Something that you could come close with a BT-60 and cardstock fillets and a simple conic NC?
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  #13  
Old 10-11-2011, 07:41 PM
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Thanks Sheryl & Carl ! My all-time favorite. Even though I'm partial to the longer version, I'll have to get one of these. I see you've used a smaller than original chute, I can't imagine why! (I'll still substitute a streamer.)
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  #14  
Old 10-15-2011, 06:29 PM
Crocodile Crocodile is offline
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Smile Cherokee-D Arrived in Mail Today

Cherokee-D arrived in the mail today. Oh did that ever bring back memories. Identical to the ones I build long ago and flew my first "D" flights. Lost every one of them when they landed in corn fields. Maybe can do better now.

Had to hunt for the decal sheet. At first I thought SEMROC left it out. ( not likely ) Found the decal sheet curled up inside the body tube.

Thank you SEMROC !!
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  #15  
Old 10-17-2011, 09:49 AM
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Cherokee-D's with D engines in ANY wind are recoverable generally only when using a streamer.
Use about a 90"x3" length of crepe paper.
With no wind, a 12" chute with a 4-6" spill hole works okay.
Forget the 18" chute; good way to lose one even on a C11.
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  #16  
Old 10-18-2011, 01:27 PM
Quixote Quixote is offline
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Default Cf-691

Quote:
Originally Posted by Carl@Semroc
From original Semroc 1969 cover.

Never was built! It was based on DynaSoar.


So Carl, As a follow on your popular VF261, bet you would get massive interest in a "Carl's Fantasy 691" Boost Glider. Think it looks awesome.

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  #17  
Old 10-18-2011, 02:29 PM
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A Fish Named Wallyum A Fish Named Wallyum is offline
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Quote:
Originally Posted by ghrocketman
Cherokee-D's with D engines in ANY wind are recoverable generally only when using a streamer.
Use about a 90"x3" length of crepe paper.
With no wind, a 12" chute with a 4-6" spill hole works okay.
Forget the 18" chute; good way to lose one even on a C11.


I cloned one back in 2001 that I flew on C11s and D12s, then built a Thrustline clone that I flew on mostly D12s. The one I built myself suffered a CATO on the D12 flight, my first ever, that cleaned out the engine mount for me. Since I had the Thrustline kit by then I put an E mount in the original clone and did manage to lose it on the first flight, but only because I was flying in serious wind. Never had a problem recovering them at VOA with a reefed 18" chute. Some of the walks were like day hikes, but my Thrustline bird is out in the shop now with a damaged nose cone from rebounding into the body tube. Otherwise, it's flyable.
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Build floor: Semroc Egg Crate, Semroc S.P.E.V

Rediscovered: Roto-Rocket Star Scan, Semroc Laser X, Semroc SLS Laser X

In paint: Centuri Stellar Hercules, Estes Monarch, Estes Nike Apache, Semroc Recruiter

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  #18  
Old 10-18-2011, 02:40 PM
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My whole point is using a 18" chute, reefed or NOT, is IDIOTIC on a rocket that weighs 2.5 oz sans propellant. TOTAL NONSENSE.
I have a vintage black-and-orange Estes checkerboard 12" chute in my Thrustline clone Cherokee-D and it will never fly with that on a D engine unless dead calm.
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When in doubt, WHACK the GAS and DITCH the brake !!!
No DIRECT and MEASURABLE 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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  #19  
Old 10-18-2011, 02:48 PM
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Quote:
Originally Posted by A Fish Named Wallyum
...I put an E mount in the original clone and did manage to lose it on the first flight, but only because I was flying in serious wind.
I'm assuming it weathercocked badly, no?

When I cooked up my 3-stage Uber Tuber, on its first flight, I had only a single D12 in the 1st stage. It crawled off the rod. By the time the 3rd stage lit, it was horizontal in the sky. It went way down range. But the good thing was, I was using a mylar streamer. Don Magness and I recovered it after a good long walk.

Those mylar streamers are amazingly helpful when you're pushing the limits. The glint of light reflecting off them makes them much easier to track at long ranges. So having the right amount drag in the recovery system is only part of the solution. Having a shiny, reflective streamer is another key part.

Doug...too bad they don't make mylar golf balls...

.
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  #20  
Old 10-18-2011, 03:40 PM
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A Fish Named Wallyum A Fish Named Wallyum is offline
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Quote:
Originally Posted by ghrocketman
My whole point is using a 18" chute, reefed or NOT, is IDIOTIC on a rocket that weighs 2.5 oz sans propellant. TOTAL NONSENSE.


I'll write that down.
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Bill Eichelberger
NAR 79563

http://wallyum.blogspot.com/

I miss being SAM 0058

Build floor: Semroc Egg Crate, Semroc S.P.E.V

Rediscovered: Roto-Rocket Star Scan, Semroc Laser X, Semroc SLS Laser X

In paint: Centuri Stellar Hercules, Estes Monarch, Estes Nike Apache, Semroc Recruiter

Body shop: Estes Jayhawk

Ready to fly: Centuri Zebra II, Estes Centuri, FSI Dart, Semroc Penetrator, Semroc Point, Semroc Squire
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