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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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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 Last edited by blackshire : 09-12-2009 at 11:01 PM. Reason: This ol' hoss done forgot somethin'. |
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