Launching Requirements

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5.1 Range Safety Officer

During all operations concerned with the launching and flight of model rockets, all authority for the safety of operations on the flying field shall be vested in a Range Safety Officer (RSO) who must be a Senior member of the NAR in good standing. Deputy Range Safety Officers who are Senior or Leader members of the NAR in good standing may have this authority delegated to them by the RSO, but this delegation of partial authority does not relieve the RSO of the overall responsibility and authority on the flying field. If the RSO leaves the flying field, he must relinquish his/her duties and responsibilities to a new RSO who must be a Senior member of the NAR.

5.2 Flying Field

The flying field shall have a ground area whose shortest dimension is no less than one-fourth (1/4) the anticipated maximum altitude of the rockets to be flown. The flying field should not contain or be adjacent to high voltage lines, major highways, multi-story buildings, or other obstacles. The launching location shall be no closer than 10 meters to the boundaries of the flying field.

5.3 Safety Check

Safety Check All model rockets presented for operation on the flying field shall be permitted or denied flight by the Range Safety Officer or their duly authorized deputy on the basis of his/her considered judgment with respect to safety.

5.4 Launching Device

A launching device or mechanism must be used that shall restrict the horizontal motion of the model until sufficient flight velocity is attained for reasonably safe, predictable flight. A launch rod composed of approximately one meter of 1/8″ diameter rod is suggested for light models and models using less than 20 Newton-seconds of impulse. For heavier or higher-powered models, a launch rod composed of approximately one meter of 3/16″ or 1/4″ diameter rod is recommended. A launching angle of less than thirty degrees from the vertical must be used.

5.5 Launcher Height

No rocket may be launched with its aft most part more than 2 meter above the ground.

5.6 Momentum

A launcher must not impart to the model any velocity or change of momentum except that caused by the model rocket motor(s) contained in the model.

5.7 Ignition

Launching or ignition of a model rocket must be conducted by remote electrical means from a distance as required by the safety code, and must be fully under the control of the person launching the model. All persons in the vicinity of any launching must be advised that a launching is imminent before a model rocket may be ignited or launched. A minimum five-second audible countdown must be given before ignition or launching of a model rocket. Contestants will always be allowed to use their own launchers, and to launch at the time of their choice, within limits placed by the RSO.