Aerotech J615ST-20A Super Thunder Rocket Motor

Product Information

Required Hardware

This motor requires a L2 Certification to buy.

The RMS Reloadable Motor System J615ST-20A rocket motor reload kit is the first high-power hobby rocket motor featuring an “Aerospike” nozzle and designed to use the two-grain RMS-54/852 hardware.

Our Aerospike nozzle provides an especially cool "I flew one” experience for our high-power flyers. Theoretically, an Aerospike nozzle expands the rocket motor exhaust gases around a center body rather than internally in the exit cone of a conventional nozzle. Aerospike nozzles have the advantage of being self-adjusting to the rocket’s ambient pressure in flight and therefore can be more efficient than a traditional fixed-expansion ratio nozzle when used at a wide range of altitudes. In consumer applications, however, the Aerospike nozzle is utilized more for its unique appearance and novelty rather than for performance reasons. Our Aerospike nozzle does produce a rather novel exhaust plume.

The J615ST-20A has a high-thrust profile for heavy rockets delivering 745.5 N-Sec (167.6 lb.-Sec.) of total impulse with a 1.2 second burn time and an all-up weight in motor hardware of 1.8 lb. (801.7 g). This new rocket motor utilizes AeroTech’s aerospace-grade Super Thunder (ST) propellant formulation with a burn rate midway between Blue ThunderTM and Warp-9TM propellant types. The J615ST-20A generates a peak thrust of 933.9 N (209.7 lb.) with an average thrust of 615.1 N (138.3 lb.). The J615ST-20A includes an ejection charge and produces tracking smoke via a 20 second time delay adjustable to increments of 18, 16, 14 and 12 seconds.

The AeroTech motor reload kit comes with 1 rocket motor reload. Reload kits include all internal motor components and FirstFire™ Initiators and requires HAZMAT shipping via FEDEX. 

Certified by the Tripoli Rocketry Association (TRA), the National Association of Rocketry (NAR) and the Canadian Association of Rocketry (CAR).

  • Specifications:

    Motor Diameter: 2.13 inches (54mm)

    Casing Length: 9.5 inches (240.4mm)

    Hardware Required: RMS-54/852

    Total Impulse: 745.5 N-sec

    Peak Thrust: 933.9 N

    Delay Time: 20 Seconds - adjustable to 18, 16, 14 and 12 seconds

    Propellant Weight: 370.5 grams

    Motor Weight: 801.7 grams

Earn Reward Points: 109

Earn Discount: $3.27

Product Code3427
ManufacturerAerotech Rocketry

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