This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Spacecraft Life Support Systems
- Aerospace Standard
Published October 15, 2012 by SAE International in United States
Downloadable datasets availableAnnotation ability available
A life support system (LSS) is usually defined as a system that provides elements necessary for maintaining human life and health in the state required for performing a prescribed mission. The LSS, depending upon specific design requirements, will provide pressure, temperature, and composition of local atmosphere, food, and water. It may or may not collect, dispose, or reprocess wastes such as carbon dioxide, water vapor, urine, and feces.
It can be seen from the preceding definition that LSS requirements may differ widely, depending on the mission specified, such as operation in Earth orbit or lunar mission. In all cases the time of operation is an important design factor. An LSS is sometimes briefly defined as a system providing atmospheric control and water, waste, and thermal management.
The major subsystems required to accomplish the general functions mentioned above are:
Breathing and pressurization gas storage system.
Temperature and humidity control system.
Carbon dioxide control system.
Trace contaminant control system.
Water management system.
Waste management system.
The technical committee which originally created this document no longer exists. The documents provides good basic information on making calculations in spacecraft life support systems. This document is one of 14 documents that were part of the original SAE Applied Thermodynamics Manual, most of which have already been stabilized.
Data Sets - Support Documents
|Unnamed Dataset 1|
|Table 14-1||Physiological Requirements|
|Table 14-2||Properties of Common Water Absorbents|
|Table 14-3||Regenerable Silica Gel Subsystem Accessory Weight (3-Man System)|
|Table 14-4||Comparison of Subsystem Characteristics|
|Table 14-5||Atmospheric Contaminants|
|Table 14-6||Human Flatus Composition|
|Table 14-7||Quantity and Rate of Waste|
AC-9 Aircraft Environmental Systems Committee
Furthers the advancement of technology related to the research, design, test and utilization of aircraft environmental and anti-icing/deicing systems. Develops and updates standards, recommended practices, and information reports contributing to the quality, economy, and safety of commercial and military aircraft.
* Redlines comparisons are available for those standards listed in the Revision History that contain a radio button. A redline comparison of the current version against a revision is accomplished by selecting the radio button next to the standard and then selecting 'compare'. At this time, Redline versions only exist for some AMS standards. SAE will continue to add redline versioning with ongoing updates to SAE MOBILUS.