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Archive for the ‘Research’ Category

SEARS Research Launch Report for Oct 21st 2007

Sunday, October 21st, 2007

The first SEARS Tripoli research launch was held on the afternoon of Oct 21st 2007 at Samson, AL. Kendall Brent did a static burn of a sugar motor and launched several rockets with sugar motors. See Kendall’s report below for the details. We also had some commercial motor launches.  Chris Short brought a friend Halley from Auburn. Chris and Halley are members of this years Student Launch Initiative.  John Hansel, Greg Lane and Chris Crews also attended.  All flights were successful except for one CATO. The pictures are available here and the videos are here.

Click thru the slideshow below of the static burn of a sugar motor in a three inch PVC casing.

Thanks to Chris for setting up the research launch and Kendall for showing us his motors.


  • Kendall Brent Says:
    I came with 5 research motors, 4 to fly and one for a hole in the ground static test. There were 3 KNSO sugar motors. Two of these were singal use PVC with remachines aerotech nozzels. Big sugar is a 3 inch PVC motor useing a 54mm aerotech nozzel bored out to 9/16. The singel fuel grain was cast as a 1/2 by 1 1/2 C slot in a 9 inch 3 inch coupler. The total grain weighed 2.75 pounds. This motor was static tested and burned as expected. The other PVC motor was made from 1.25 PVC useing a remachine 29 mm aerotech nozzel bored out to .25 inch. The singel fuel grain was a C slot cast in a 5 inch 38mm liner tube with a .125 by .75 slot. This motor power a flight with a PerfectFlite timer for recovery. The other Sugar motor was a 3 Bates grain in 54mm Loki case. This motor suffered a CATO soon after ingition(see video) . Cause of CATO is expected to be either inhibitor failure or cracking of the grains at ignition. A 4 grain 38mm CPAP (Tiger Tales) was used to take my Firestorm 54 to 2900 ft. The final motor was a research Hybrid which failed to fill. The cause of the failure turned out to be a defective Press to connect fitting in the motor.
  • SEARS Tripoli Research Launch is a GO!

    Monday, October 15th, 2007

    The first SEARS Tripoli Research Launch will  be Oct 21st in Samson. The waiver will open at 1 PM. See more info on research launches here.


  • Chris Short Says:
    If you have any questions please call me at 850-554-6531. This will be a very slow paced launch and there is likely to be less than a dozen flights. Please fell free to come out and watch but understand that spectators are not allowed onto the range for any reason. Lets make this a great first research launch. There will be a controller and a rail for HPR. If your are Tripoli L2 or above you can fly commercial. Greg is going to bring his low/mid power launch pads and controller.
  • Tripoli Research Launches at SEARS

    Saturday, September 29th, 2007

    We will likely begin Tripoli Research Launches in the near future when launch dates are approved.  Chris Short, the TRA 38 Prefect, is the Research Launch coordinator.  Research launches will not be on the same date as a regular SEARS Launch. All reseach launch activities shall comply with the Tripoli Research Code. Otherwise, the TRA insurance would not apply.  TRA members Level 2 or above are allowed to fly. They can also fly commercial motors. SEARS non-TRA members are welcome to observe from the flight line.  Do not bring non-members to the research launches unless coordinated with Chris.  Of course regular SEARS launches are open to everyone and newcomers are welcome. Kendall Brent makes his own research motors and and can fill you in. SEARS does not recommend making motors unless you are TRA Level 2 and consult TRA members participating in reseach launches. There are classes available. As with any of our activities we must do them safely and not do anything to damage the farm or get a negative response from the owner of the sod farm!

    Note: John Hansel will handle the FAA waivers for research launches.  There will be minimal launch equipment and the porta-a-potty will not be serviced.

    Greg Lane

    SEARS President