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July 23, 2011 - by Rover poll
This is our current rover development, called RoverX: We would like to know:
July 20, 2011 - by A new rocket fuel? Part 9
Burn rate comparison of three probes of 2.25g KClO3/0.75g hexamine and 0.1g to 0.3g catalyst: Hexaphenox test firing with a 3mm diameter throat nozzle:
July 19, 2011 - by A new rocket fuel? Part 8
First test firing without CATO. But burn time was too long, propellant burned holes into the casing:
- Rick Maschek reports that DSS qualifies for The Carmack 100kft Micro Prize and that he will register for the prize prior to the launch date (assuming the prize will still be available). The basic prize of $5000 USD has been augmented by other donors to a total sum of $10,000 USD.
July 18, 2011 - by A new rocket fuel? Part 7
The following experiment using hexaphenox propellant was performed yesterday: Another static firing led again to an explosion, the nozzle will have a larger throat for the next test:
Rick Maschek and Ed LeBouthillier have machined a rocket nozzle for upcoming static SAM and hexaphenox test firings:
First experiments of a simple solid rocket motor which can be extinguished and re-ignited: See also: The 1000 Dollar Chemistry Competition. Still one month time to find a catalyst and win 1000USD.
July 16, 2011 - by A new rocket fuel? Part 6
Third static test firing of a hexaphenox rocket motor, using 3.7g KClO3, 3.8g KNO3, 1.5g hexamine and 1g catalyst:
Paul Avery and Rick were at the FAR test complex this past weekend in order to perform a test firing of a modified pyrogen design, work on getting the deluge system water supply operational, perform a trial assembly of the motor, and to work on prepping the static test stand. Paul reported no significant snags and that much was accomplished. Videoclip of firing of pyrogen with star propellant grain:
Rick reports: The new design I was trying is partly based on the Sugar Shot dual pulse motor design. The motor is filled half full of propellant with a cylindrical core to the top. I then packed paper into the tube on top as a "delay" grain. I then poured more propellant on top of that again with a cylindrical core. I idea is that the lower propellant is ignited propelling the rocket upwards and then coasts as the paper burns through. Then the second pulse (the propellant first poured) fires.

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