10-30-2011, 11:10 PM
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Craftsman
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Join Date: Sep 2006
Posts: 131
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Quote:
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Originally Posted by Green Dragon
You need no Level anything cert to cluster E motors.
Level 1 cert in only required for flying H-I motors. ( or up to cluster of 1280 N-sec ).
three 30Nsec E's is 90 Nsec and no certification is required..
unsure on the waiver issues, however, is the new no-notification 'large model rocket' propellant weight limit 125 grams or 113 ?
~ AL
fly em high  |
Not entirely correct.
Your forgetting the NAR safety code rule 7 Size. My model rocket will not weigh more than 1,500 grams (53 ounces) at liftoff and will not contain more than 125 grams (4.4 ounces) of propellant or 320 N-sec (71.9 pound-seconds) of total impulse.
3 E9 are 35.8 * 3 = 107.4 grams OK
4 E9 are 35.8 * 4 = 143.2 grams NOT OK - HP and you need a L1 |