Use Environment per MIL HDBK-217F (Space):

Space, Flight: Earth orbital. Approaches benign ground conditions. Vehicle neither under powered flight nor in atmospheric reentry; includes satellites and shuttles.

Missile, Flight: Conditions related to powered flight of air breathing missiles, cruise missiles, and missiles in unpowered free flight.

Missile, Launch: Severe conditions related to missile launch (air, ground and sea), space vehicle boost into orbit, and vehicle re-entry and landing by parachute. Also applies to solid rocket motor propulsion powered flight, and torpedo and missile launch from submarines.

Cannon, Launch: Extremely severe conditions related to cannon launching of 155 mm and 5 inch guided projectiles. Conditions apply to the projectile from launch to target impact.

Ground Environments

Mean Time Between Failure Definition .... Military Specifications

Engineering Key Words: Failure Mode Analysis, Reliability Prediction, MIL-HDBK-217, Plane, Space, Rocket, Bellcore / Telcordia, IEC 62380

 
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