What is the minimum distance for smoking (or open flames) from high power rocket motors?

The correct minimum distance for smoking or open flames from high power rocket motors is 25 feet. This distance is established as a safety protocol to reduce the risk of ignition or accidents during rocket launches. High power rocket motors contain oxidizers and propellants that can be highly flammable; therefore, maintaining a specified distance helps to minimize the potential for fire hazards in the launch area.

Additionally, regulations and safety practices in rocketry emphasize maintaining this safe distance to protect all participants and spectators at launch events. It ensures that the area where rockets are ignited remains clear of any sources of ignition that could accidentally ignite propellant materials. Such precautions are vital for promoting safety in rocketry activities. Other distances, while possibly considered safe in different contexts, do not provide the same level of safety assurance required for high power rocketry operations.