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Old 04-01-2016, 08:21 PM
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blackshire blackshire is offline
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Default Austral Launch Vehicle

Hello All,

Here’s a Concept Scale prototype for an interesting “cross-over” model—the Austral Launch Vehicle (ALV, see: http://heliaq.com/ and https://www.google.com/#q=Austral+Launch+vehicle ). This mostly reusable, "3STO" (Three-Stage-To-Orbit) launch vehicle design utilizes a V-tailed or T-tailed rocket-powered first stage whose high-mounted, straight wing is stowed atop its fuselage during launch. After the reusable winged second stage separates, the first stage re-enters the atmosphere as a hypersonic glider and then (after slowing down considerably) deploys its pivoted wing. Then a piston engine (mounted inside the nose) starts, turning a propeller whose deployable blades are folded against the first stage’s nose during launch, and the nose tip serves as the propeller’s streamlined spinner hub. A small expendable third stage injects the payload into orbit. Also:

A scramjet-powered second stage is being studied for the ALV. The studies also include clustering multiple units of the ALV’s reusable first stage around a conventional two-stage expendable rocket core vehicle (the "placeholder" core vehicle looks like a Falcon 9...), to increase its payload capability. (The propeller-driven first stages would be able to loiter near the landing runway so that the multiple first stages could land one at a time, then taxi off the runway so that the still-waiting first stage [or stages] could then land.) An ALV Concept Scale model depicting the three-stage, mostly-reusable version could have an electric motor-driven propeller with folding blades on the first stage (the scramjet-powered winged second stage model could use an EDF [Electric Ducted Fan]), and both winged stages could be radio-controlled.

I hope this information will be helpful.
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Old 04-03-2016, 10:32 PM
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luke strawwalker luke strawwalker is offline
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Looks something like the Russian "Baikal" flyback boosters, which also have rear fins that act as tail surfaces in recovery flight, and a swing wing that deploys to fly the booster back to a runway landing, under jet engine power, with the jet located in the nose cone of the rocket, running on residual kerosene from the rocket fuel tank.

Later! OL J R
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Old 04-04-2016, 01:12 AM
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Quote:
Originally Posted by luke strawwalker
Looks something like the Russian "Baikal" flyback boosters, which also have rear fins that act as tail surfaces in recovery flight, and a swing wing that deploys to fly the booster back to a runway landing, under jet engine power, with the jet located in the nose cone of the rocket, running on residual kerosene from the rocket fuel tank.

Later! OL J R
Indeed--and Convair's V-tailed Triamese Space Shuttle design (see: http://www.aerospaceprojectsreview.com/blog/?p=599 [they also studied a biamese version using a larger booster of the same basic shape as the orbiter, see: http://www.aerospaceprojectsreview.com/blog/?p=305 ]) also looks very much like the ALV booster. I commend them for choosing a piston-driven propeller for the ALV booster (it looks strange to have such a cruise propulsion system on a rocket-powered vehicle, but it is lightweight and requires less flyback fuel than a jet engine would). Larger winged boosters would probably require turbofan flyback engines (the earlier Shuttle designs that had winged boosters incorporated them).
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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.
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