Start Date
4-1971 8:00 AM
Description
Minimizing of attitude disturbances during critical maneuvers in space is extremely important to the success of present and future aerospace missions. Thus, a means is needed to ensure that definite attitude positions can be maintained during specific phases of a mission and in some cases indefinitely. To fulfill this requirement, excess or residual propellant vapors and waste gases must be removed with minimum impulse unbalances imparted to the vehicle. The obvious method of accomplishing this is to employ a vent system that dissipates the impulse generated by the various effluents in a nonpropulsive manner. Such nonpropulsive vent (NPV) systems have been designed, installed and flown on several S-IV and S-IVB stages of the Saturn Launch Vehicles. This system was the first of its kind to be tested in orbit, and the data from these flights clearly substantiates the design adequacy of the system. Design considerations and the overall approach in resolving the requirements of this system are discussed in detail.
Design Considerations for an Orbital NonPropulsive Vent System
Minimizing of attitude disturbances during critical maneuvers in space is extremely important to the success of present and future aerospace missions. Thus, a means is needed to ensure that definite attitude positions can be maintained during specific phases of a mission and in some cases indefinitely. To fulfill this requirement, excess or residual propellant vapors and waste gases must be removed with minimum impulse unbalances imparted to the vehicle. The obvious method of accomplishing this is to employ a vent system that dissipates the impulse generated by the various effluents in a nonpropulsive manner. Such nonpropulsive vent (NPV) systems have been designed, installed and flown on several S-IV and S-IVB stages of the Saturn Launch Vehicles. This system was the first of its kind to be tested in orbit, and the data from these flights clearly substantiates the design adequacy of the system. Design considerations and the overall approach in resolving the requirements of this system are discussed in detail.
Comments
No other information or file available for this session.