The awesome G80’s are back!

[Chris LaPanse]

And they come in 13 second delays.

(from the rocketry forum, posted by Gary)
The new G80T uses a dual “BATES” center core-burning grain configuration. This eliminates the need for extra case insulation and allows the largest diameter grain possible with a full 62.5 grams of propellant, the maximum permitted for a “legal” model rocket motor. The propellant composition was optimized to increase density and specific impulse (Isp) as much as practical within the parameters of AeroTech’s DOT shipping classification and the inherent limitations of small rocket motor design. The nozzle exit cone was molded with a higher expansion ratio to increase motor efficiency. Other, proprietary design techniques were used as well.

Combined, these improvements have resulted in a delivered total impulse in excess of 130 newton-seconds, the highest ever achieved for a production single-use model rocket motor. The actual total impulse will be revealed once National Association of Rocketry (NAR) certification is granted for the new design. All this was accomplished without the use of exotic propellant chemicals or excessively high chamber pressures that could compromise motor reliability and safety.

The new G80T will be available in time delays of 7, 10 and 13 seconds. The 4-second delay has been discontinued, and customers are advised to use the next longer delay time increment for their rockets, due to the greatly increased total impulse. Other specifications of the new G80T include a burn time of 1.7 seconds, loaded weight of 128 grams, fired weight of 59 grams, diameter of 1.125″ and a casing length of 4.88″. The molded aft thrust ring has dimensions of 1.25″ diameter X .25″ long. Though the new G80Ts have a different exterior appearance due to the molded aft thrust ring, they will be clearly marked to differentiate them from the older G80Ts.

Do I sense a new SSS motor for next year? 8) 😯

[Ed Dawson]

I still like supporting our local dealers and new motor lines like Roadrunner.

That being said, I will try one of these new AT G80s WITH a tracking device this time – contest or no contest.

I’m curious to see the thrust curve or eng file for this new ~130ns option.

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