This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Space Station Environmental Control/Life Support System Engineering
Annotation ability available
Sector:
Language:
English
Abstract
The Space Station requirements are divided into eleven systems. One of these systems, the Environmental Control/Life Support System (ECLSS) is further divided into seven functional categories as follows: Atmosphere Revitalization System, Atmosphere Pressure and Composition Control System, Module Temperature and Humidity Control System, Water Management System, Waste Management System, EVA Support and Safe Haven. The paper reviews the requirements for ECLSS in terms of the initial and growth operational capabilities of the Reference Space Station architecture.
The paper reviews some of the results of a systems engineering study under way. Both regenerative and nonregenerative ECLSS techniques are reviewed. A design for all of the primary and backup technologies was established so that accurate trade studies could be performed. Each technology design started at a common interface condition for competing technologies. The designs were defined by developing a mechanical schematic and control requirements. The actuators, sensors, control/monitor requirements, weight, power and volume of each design were developed from these designs. The design aspect of the technology maturity and reliability indicated the impact that each design would have on the IOC Space Station. The reliability was also evaluated in terms of impact upon the on-orbit spares and resupply requirements. The control/monitor instrumentation was evaluated from a capabilities, location and genericness standpoint within each module.
Individual subsystems, assemblies, units and instruments are discussed in terms of requirements, sizes and locations within the modules of a Space Station (for the CDG, Planar and Reference Space Station Configurations). The synergism between the ECLSS and other systems, that is, the commonality of the water, oxygen, hydrogen utility lines with the Electric Power System and the Reaction Control System are discussed.
Phase B of the Space Station Design will critically evaluate the ECLSS alternatives and promote a preliminary design. This paper discusses a powerful tool to be used in this evaluation-a wide range data base developed from a common basis. The utilization of this data base will ensure accurate trade studies and confidence in the ECLSS design.
Citation
Miller, C. and Heppner, D., "Space Station Environmental Control/Life Support System Engineering," SAE Technical Paper 851375, 1985, https://doi.org/10.4271/851375.Also In
References
- North American Rockwell “Modular Space Station, Phase B Extension,” Preliminary System Design January 1972
- McDonnell Douglas Co. “Space Station Preliminary Design, Preliminary Systems Design Data,” 1 NAS8-25140: Crew Systems July 1970
- General Dynamics “Study for Basic Subsystem Module Preliminary Definition,” Final Report 1973
- Boeing Aerospace Company “Space Operations Center,” January 1982
- McDonnell Douglas Astronautics Company “Space Station Systems Analysis Study, Part 3; Documentation, Volume 7; SCE Alternate EPS Evaluation Task 10,” September 1977
- Lyndon B. Johnson Space Center “Space Operations Center, a Concept Analysis,” 1 November 29 1979
- NASA Headquarters Space Station Commercial User Development Mission Analysis Study Contracts: NASW-3680, Boeing Aerospace Company, NASW-3681, TRW Inc.; NASW-3682, General Dynamics Corporation; NASW-3683 Rockwell International Corporation; NASW-3684, Lockheed Missile and Space Company; NASW-3685, Grumman Aerospace Corporation; NASW-3686, Martin Marietta Corporation; and NASW-3687, McDonnell Douglas Corporation
- Lyndon B. Johnson Space Center “Space Station Systems Requirements and Characteristics,” October 20 1982
- Lyndon B. Johnson Space Center “Space Station Reference Configuration Description,” August 1984
- George C. Marshall Space Flight Center “Space Station Systems Definition,” October 1982
- Lyndon B. Johnson Space Center “Space Station Definition and Preliminary Design - Request for Proposal,” September 15 1984
- Miller, C.W. Heppner, D.B. Schubert, F.H. Dahlhausen, M.J. “Environmental Control/Life Support System for Space Station,” paper presented at 35th International Astronautical Federation Congress October 1984
- Quattrone, P.D. Wynveen, R.A. “Environmental Control and Life Support for an Evolutionary Space Station,” SAE Paper No. 831108 July 1983
- Schubert, F.H. Wynveen, R.A. Quattrone, P.D. “Advanced Regenerative Environmental Control and Life Support Systems: Air and Water Regeneration,” paper presented at the 25 COSPAR Conference July 1984
- Samonski, F.H. “The Development Status of Candidate Life Support Technology for a Space Station,” paper presented at 35th International Astronautical Federation Congress October 1984