Description / Abstract:
Systems shall be classified in terms of type, category and
class.
Type:
Type defines the ambient temperature range under which the
complete system is capable of operating within the performance
envelope during the entire service mission.
Type I: Operational temperature range between -54°C (-65°F) and
+93°C (+200°F).
Type II: Operational temperature range between -54°C (-65°F) and
+149°C (+300°F).
Type III: Operalionallemperalure range between -54°C (-65°F) and
+260°C (+500°F).
Category:
Category defines the use of external thermal energy, above
ambient conditions, added to the gas storage reservoir during
prelaunch or during the operational missin.
Category A: Gas storage reservoir unheated at all times.
Category B: Gas storage reservoir heated prior to launch.
Category C: Gas storage reservoir continuously heated during the
service mission.
PURPOSE:
This aerospace recommended practice covers the design,
installation, tests and data requirements of stored cold gas
blowdown systems or subsystems for use in guided projectiles and
tactical missiles. The term system, hereafter, refers to units
which function as aerodynamic surface control devices. Valve
actuated control devices, reaction control devices and
sensing/control devices.