The B4 Q-Jet (B4) is a 94% B single-use motor from Quest.
AeroTech's Black Max propellant produces a dense black exhaust.
The casing of this motor is 70mm in length (the same as a standard 18mm motor).
| Average Thrust: | 4.4182 N |
| Certified By: | National Association of Rocketry |
| Class: | 94% B |
| Delays: | 4,6 seconds |
| Designation: | B4 Q-Jet |
| Diameter: | 18.0000 mm |
| Formula: | Black Max |
| Length: | 80.0000 mm |
| Letter: | B |
| Manufacturer: | Quest |
| Name: | B4 |
| Peak Thrust: | 7.2000 N |
| Status: | Out-Of-Production |
| Thrust Duration: | 1.1000 s |
| Total Impulse: | 4.8600 Ns |
| Total Weight: | 19.8000 g |
| Type: | Single-Use |
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