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Payload

Propulsion

Thrust Curve

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Long startup time

The motor took significantly longer to light than previous tests, including the second P motor test that used an identical igniter with twice the propellant. In the P motor test, the igniter lit the motor in less than a second because it was held in the core by gravity until the motor had built up enough pressure to push it out. The smaller flight motor was almost certainly slower to light because the igniter fell out of the motor within a second of firing and thus was only able to light a small portion of the propellant. This theory is supported by the video as you see a bright spot hit the ground shortly after the ematch is heard popping. To prevent this from happening, make sure the igniter includes some faster-burning substance like pyrogen, uses more propellant dust , or is held to the stick with extra wire or something that won't burn like the tape did. Though just a minor inconvenience on a single stage flight, ignition time becomes much more critical on a multistage flight. Care must be taken to not overpressurize the motor, though, so unless it is determined to be essential to a flight, a relatively slow igniter is not a problem and is the safer solution.

Recovery

Piston Deployment

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