Engine Testing Notices


R99 New Motor Certifications 10 April 2005

The following motor has been certified by NAR Standards & Testing for general use as model rocket motors effective April 10, 2005.

        F20 LUR (Limited-Use Reloadable)
        29mm x 83mm
           F20-4,7  (51.75 Newton-seconds total impulse, 30.0 grams propellant mass)

    Note: The manufacturer rates this for at least three uses per case. S&T has tested the system with four used per case with no real change in performance.

John Lyngdal,
Secretary for NAR Standards & Testing

Jack Kane,

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