NFPA-1127-2002 Code for High Power Rocketry.
4.9 Weight and Power Limits. 4.9.1 The maximum liftoff weight of a high power rocket shall not exceed one-third ( 1 ⁄ 3 ) of the certified average thrust of the high power rocket motor(s) intended to be ignited at launch. 4.9.2 A high power rocket shall be launched with any combi- nation of motors having 40,960 N-sec (9208 lb-sec) of total impulse or less. 4.10 Recovery. 4.10.1 A high power rocket shall be launched only if it con- tains a recovery system that returns all parts of the rocket to the ground intact so it can be launched again. 4.10.2 A high power rocket launched with an installed total impulse greater than 2560 N-sec (576 lb-sec) shall use an elec- tronically actuated recovery system as either a primary or backup deployment method. 4.10.3* The person who prepares the high power rocket for flight shall install only flame-resistant recovery wadding if the design of the rocket necessitates the use of wadding. 4.10.4 No attempt shall be made to catch a high power rocket as it approaches the ground. 4.10.5 No attempt shall be made to retrieve a high power rocket from a power line or other life-threatening area. 4.10.6 If a high power rocket becomes entangled in a power line, the utility company or other appropriate authority shall be notified.
4.16.2 All spectators shall remain within an area determined by the range safety officer. 4.16.3 All spectators shall remain behind the range safety officer and the person launching the rocket. 4.16.4 No person shall be permitted to be at a location that is closer to the launch of a high power rocket than the appli- cable minimum spectator and participant distance set forth in Table 4.16.4. 4.16.5 Parking area distance shall be equal to at least the spectator and participant distance set forth in Table 4.16.4. 4.17 Launch Operations. 4.17.1 No person shall ignite and launch a high power rocket horizontally, at a target, or so that the rocket’s flight path goes into clouds or beyond the boundaries of the launch site. 4.17.2 No person shall launch a high power rocket if the surface wind at the launcher is more than 32 km/h (20 mph). 4.17.3 No person shall operate a high power rocket in a man- ner that is hazardous to aircraft.
4.18 Launch Control. 4.18.1 A high power rocket shall be launched only with the knowledge, permission, and attention of the range safety officer. 4.18.2 Except for those individuals with mobility restrictions, all persons in the launching, prepping, spectator, and parking areas during a countdown and launch shall stand and face the launcher if requested to do so by the range safety officer. 4.18.3 The launching of a high power rocket shall be pre- ceded by a 5-second countdownthat is audible throughout the launching, spectator, and parking areas. 4.18.4 A high power rocket that has misfired shall not be approached until all of the following have occurred: (1) The safety interlock has been engaged. (2) One (1) minute has passed. (3) The range safety officer has given permission for one per- son to approach the misfired rocket to inspect it.NFPA-1127 pdf download.