The control of mass characteristics is a critical aspect of the development and operation of aircraft and spacecraft. It involves managing the mass and mass distribution of a space system to ensure that it can meet its contract and performance objectives. This process is critical as the mass of a spacecraft directly affects its performance, efficiency and ultimately the success of the mission.
A space system consists of various subsystems, each with specific mass characteristics. These characteristics must be carefully defined and controlled to ensure that the entire system remains within the contractual limits and performance requirements. Mass property requirements are analyzed, controlled and reported both top-down and bottom-up.
Top-down approach
- Starts with the overall requirements of the space system, which are derived from the customer requirements.
- These requirements are then broken down to the individual subsystems to ensure that each subsystem contributes to the overall objectives.
- Limit values for mass and mass distribution are defined, which must be adhered to by the subsystems.
Bottom-up approach
- Begins by analyzing the individual components and subsystems.
- The mass properties of each component are measured and documented to ensure that they meet the requirements.
- This data is then aggregated to determine the total mass and mass distribution of the space system and ensure that it is within the specified limits.
In summary, controlling mass properties is a complex and continuous process that requires close collaboration between different disciplines and teams. Careful analysis and control of mass properties can ensure that a space system achieves its performance goals and successfully fulfills its mission.
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