Yes, different licences for different impulse classes of rocket motors. More details can be found on the National Association of Rocketry website (http://www.n

Yes, different licences for different impulse classes of rocket motors. More details can be found on the National Association of Rocketry website (http://www.nar.org http://www.nar.org). Level 1[1], Level 2[2] and Level 3[3] certifications. [1] http://www.nar.org/high-power-rocketry-info/level-1-hpr-certification/ http://www.nar.org/high-power-rocketry-info/level-1-hpr-cert... [2] http://www.nar.org/high-power-rocketry-info/level-2-hpr-certification/ http://www.nar.org/high-power-rocketry-info/level-2-hpr-cert... [3] http://www.nar.org/high-power-rocketry-info/level-3-certification/ http://www.nar.org/high-power-rocketry-info/level-3-certific...