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Old 09-12-2009, 10:49 PM
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blackshire blackshire is offline
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Join Date: Jan 2009
Location: Fairbanks, Alaska
Posts: 6,507
Default New sounding rocket--powered by sugar!

Hello All,

While looking up web sites about sugar rockets, I came across this one (see: www.sugarshot.org/index.html ) about a project to build a sugar-fuel sounding rocket with a design apogee of 100 km (62 miles). The vehicle would make a good scale model rocket subject.

The motor design is also interesting, containing two propellant grains separated by a non-thrust 10 second delay charge. The two-pulse thrust profile mimics that of a delayed-ignition upper stage, which is commonly used with sounding rockets. The first ~2.5 second thrust pulse boosts the rocket to a high velocity, and the delay allows the rocket to clear the dense lower atmosphere so that the second thrust pulse can do its work largely unencumbered by aerodynamic drag and ambient atmospheric back-pressure outside the nozzle.

The project team has successfully static-fired a sub-scale motor, and they are making preparations to fly it in a scaled-down version of the space-capable vehicle.
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Last edited by blackshire : 09-12-2009 at 11:01 PM. Reason: This ol' hoss done forgot somethin'.
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