A3-4 Q-Jet (2-pak)


In stock (22 available)

Write a review

Product Description

A3-4 Q-Jet™ 2-pack 18mm model rocket motors. Includes initiators and wadding.

The Q-Jets are the world's most advanced 18mm model rocket motors. They utilize a patent pending high-strength polymer case and bulkhead, ceramic nozzle and RCSs exclusive Black Max™ aerospace- grade composite propellant formulation, which produces nearly double the specific impulse (or "Isp", a propellant efficiency rating) of conventional black powder propellant. They are not susceptible to thermal cycling like black powder motors. Q-Jets generate a highly-visible exhaust plume and delay smoke trail. All Q-Jets ship with a FirstFire Micro™ 2-lead initiator, which can be used with any launch controller. All Q-Jet motors are U.S. mailable with 
no hazmat fee!


Motor Diameter: 0.703" (18mm)
Casing Length: 2.75" (70mm)
Total Impulse: 2.5 N-sec
Burn Time: 0.84 seconds
Average Thrust: 3 newtons
Delay Time: 4 seconds
Propellant Weight: 2.1 grams
Motor Weight: 17.9 grams
Maximum Liftoff Weight: 28 grams

Certified by the Tripoli Rocketry Association (TRA)

For RockSim-compatible .rse and .eng files, please visit the link here.

Customer Reviews

This product does not have any reviews yet - be the first to write one.