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  #11  
Old 07-21-2019, 04:47 PM
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Files from the non-working Dropbox link . . .
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  #12  
Old 07-21-2019, 06:47 PM
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Quote:
Originally Posted by Ez2cDave
Files from the non-working Dropbox link . . .

I appreciate all the info you post here for my members, Dave!
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  #13  
Old 07-21-2019, 07:31 PM
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Originally Posted by Ltvscout
I appreciate all the info you post here for my members, Dave!


Thank you for your kind words, Scott !

Rocketry, ever since I started in the late 1960's has always been a "Brotherhood" to me ( not excluding any female Rocketeers ) . . .

I often the enjoy the camaraderie at least as much as flying . . .

I believe that data is meant to be shared openly and that help should be given, whenever it is asked for, or becomes apparent that it is needed . . .

I fully intend to continue doing so, whenever I can . . .

There are those who do not share my sentiments and, to them, I say "If you don't like my posts, then please don't read them !"

Dave F.
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  #14  
Old 07-26-2019, 01:06 AM
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Quote:
Originally Posted by Ltvscout
I appreciate all the info you post here for my members, Dave!
Heartily seconded! Those Aero-High drawings even include the launcher, which would enable NAR Super Scale (rocket *and* launcher) models to be built.
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  #15  
Old 07-26-2019, 07:15 AM
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Originally Posted by blackshire
Heartily seconded! Those Aero-High drawings even include the launcher, which would enable NAR Super Scale (rocket *and* launcher) models to be built.


Here they are, again . . . "Cleaned up", a little.

Dave F.
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  #16  
Old 07-26-2019, 07:22 AM
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A couple of pics . . . Good "rivet detail" in the first one !

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  #17  
Old 07-26-2019, 08:13 AM
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Quote:
Originally Posted by Ez2cDave
A couple of pics . . . Good "rivet detail" in the first one !

Dave F.
Thank you for posting these pix (and the "darkened-line" drawings, too--they're much more distinct)! The first photograph (showing the "peeled back" casing) is of a recovered Raven rocket motor, which powered the BAC--later BAe--Skylark sounding rocket (I've included links pertinent to an excellent Skylark history book below--there is plenty of Skylark [as well as Skua, Petrel, and Fulmar] material on "the interwire," too :-) ). Also:

The Skylark (see: http://www.google.com/search?ei=Res...7.L LAaK57g7FA ) was to Great Britain what the Aerobee (and now the Canadian Black Brant series--the 17.25" [438 mm] Black Brant and Nihka motors were patterned after the various Skylark motors of the same diameter) was to us. Hundreds of Skylarks were flown, from sites all over the world, and they also carried payloads for other countries; even NASA used at least four Skylark vehicles launched from Woomera, carrying ultraviolet astronomy payloads to map the southern sky, and:

The basic, single-stage Skylark used a Raven motor. The more popular boosted version used a Raven motor mounted atop a Cuckoo motor (which was fitted with three small fins, and had an Aerobee-like open interstage section with a blast cone), which was later replaced by a *finless* Goldfinch--and still later, a Goldfinch II--motor, in true CHAD staging style. :-) By the time the Goldfinch motors arrived, the payloads had become so long and heavy that the Skylark's three fins were sufficient to stabilize the entire "stack" (the TEXUS and MASER programs at Esrange flew many of them; much about them is online)--plus:

Optional Imp spin motors reduced the impact dispersion, which was important for ranges (especially land ranges, such as Esrange in Sweden) which have small downrange impact areas. (Incidentally, the Brazilian VSB-30 two-stage sounding rocket [see: http://www.google.com/search?ei=X-Y...i10.O8nd6Duu5hE ] was designed as a "drop-in replacement" for the Skylark, which last flew in 2005; the VSB-30 has similar performance, and all of the Skylark payload modules--many of them are used to this day--fit its interfaces.) The most powerful Skylark variant was the Skylark 12, which used a Raven XI motor atop a Goldfinch II motor, with a (finless and spin-stabilized, like the Black Brant's optional Nihka final stage) Cuckoo IV third stage atop the Raven XI motor (see: http://www.google.com/search?ei=dus...131.rZTENH3WE70 ). In its latter years, these three "standard" Skylarks (earlier versions were variously numbered) were the Skylark 5 (Raven XI motor; single-stage), Skylark 7 (Goldfinch II-boosted Raven XI; two-stage), and Skylark 12 (Goldfinch II/Raven XI/Cuckoo IV; three-stage). Below are links to information--including ordering information--on the book, "Britain's First Space Rocket: The Story of the Skylark," by Robin H. Brand:

http://www.new-forest-electronics.c...kylark-book.htm

Order from:
http://www.ypdbooks.com/science-and...k-YPD01129.html

All sources: http://www.google.com/search?source.....0.jTHtFwuvOqU

I hope this information will be helpful.
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  #18  
Old 07-28-2019, 07:51 AM
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Quote:
Originally Posted by Ez2cDave
A couple of pics . . . Good "rivet detail" in the first one !

Dave F.
Another commonly-used (but not documented, to my knowledge) Australian sounding rocket was the HAT (High Altitude Temperature). It used the same three-finned LAPSTAR second stage (LAP stood for "Light Alloy Plastic" [PVC-based plastic propellant, in a light alloy motor case]) as the HAD (High Altitude Density) sounding rocket, a photograph of which is the first on the left, in posting #1 of this thread, but:

Instead of the single Gosling first stage motor of the HAD, the HAT used two smaller, side-by-side Demon rocket motors as its first stage (much as the Aeolus used a Long Tom second stage [a Mayfly motor] atop a less powerful cluster of seven LAPSTAR motors, all mounted inside a short enclosing tubular airframe with a short conical interstage adapter and four rectangular fins), and:

The HAT's first stage had four rather long-span clipped delta fins (two on each Demon motor), and because of their side-by-side attachment (with a rather "flat" [matching the motors' diameter in depth, and twice their combined diameters in width] conical interstage adapter on the front end), the fins formed a sideways "X" when viewed from the top or bottom. A home-made "two-to-one" ducting (and vented) gap-staging adapter (like the "one-to-three" ducting staging manifold adapter that John Boren developed for Estes' MIRV kit: https://estesrockets.com/wp-content...002134_MIRV.pdf ) would enable a HAT scale model to ignite its second stage with the hot particles from ^both^ booster motors. Also:

This would--if the model was light enough to climb sufficiently high and not arc over too much, if one of the two first stage motors failed to ignite at launch--offer greater overall reliability. If both first stage motors ignited, second stage ignition would be almost 100% certain to occur, and if only one first stage motor ignited, second stage ignition would still be nearly as assured as it would be in the first case. *OR*, one of the two first stage Demon motor tubes could be vented to ignite the second stage, while the other one could have a rear-ejecting motor mount on a shock cord, to enable parachute of streamer recovery of the first stage (it would use a short-delay motor of the same total impulse category as the "dash-zero" booster motor in the other first stage Demon motor tube, such as a B6-2 and a B6-0).
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Black Shire--Draft horse in human form, model rocketeer, occasional mystic, and writer, see:
http://www.lulu.com/content/paperba...an-form/8075185
http://www.lulu.com/product/cd/what...of-2%29/6122050
http://www.lulu.com/product/cd/what...of-2%29/6126511
All of my book proceeds go to the Northcote Heavy Horse Centre www.northcotehorses.com.
NAR #54895 SR
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