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An altitude of 10.3 km was reached, making it the highest verified altitude achieved in Africa by an amateur group. This was an especially notable achievement as the propellant was based on Ammonium Nitrate , as opposed to the more common ammonium perchlorate .
The National Fire Protection Association (NFPA) definition of a high-power rocket is one that has a total weight of more than 1,500 grams (3.3 lb) and contains a motor or motors containing more than 125 grams (4.4 oz) of propellant and/or rated at more than 160 Newton-seconds (40.47 lbf·s) of total impulse, or that uses a motor with an average ...
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The designation for a specific motor looks like C6-3.In this example, the letter (C) represents the total impulse range of the motor, the number (6) before the dash represents the average thrust in newtons, and the number (3) after the dash represents the delay in seconds from propelling charge burnout to the firing of the ejection charge (a gas generator composition, usually black powder ...
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Tower Hobbies was the first mail-order company in the radio control hobby industry to offer direct-dial, toll-free, 1-800 WATS phone lines for ordering and customer service. [7] Tower Hobbies was also the first mail-order company in the RC hobby to use an in-house IBM mainframe computer to process orders and track inventory. [3] [7]