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Evaluation of a Rear Entry System for an Advanced Spacesuit
Technical Paper
2005-01-2976
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The success of astronauts in performing Extra-Vehicular Activity (EVA) is highly dependent on the performance of the spacesuit they are wearing. The Space Shuttle Extravehicular Mobility Unit (EMU) is a waist entry suit consisting of a hard upper torso (HUT) and soft fabric mobility joints. The EMU was designed specifically for zero gravity operations. With a new emphasis on planetary exploration, a new EVA spacesuit design is required.
One of the key features of any space suit is the entry method. Historical examples of different entry types include waist entry, rear entry, bi-planar entry, and soft zipper type entry. Suit entry type plays a critical role in defining the overall suit architecture. Some of the critical suit features affected by entry type are suit don/doff capability, suit sizing, suit mass, suit volume, and suit comfort. In general, rear entry designs provide better don/doff capabilities. However, mass and limitations to vertical torso length may be disadvantages of the rear entry design. Entry type is also affected by the vehicle and habitat interfaces such as air locks, hatches, and manned rovers. One concept for planetary exploration is to have an unpressurized vestibule attached to the habitat and have the spacesuit attached to the habitat wall acting as an air lock. This scenario is best supported by a rear entry design minimizing the amount of dust and dirt entering the habitat.
ILC has designed a rear entry prototype upper torso for the I-Suit advanced spacesuit. The design facilitates don/doff while minimizing mass and the negative effects on vertical sizing. This paper discusses research performed at ILC Dover to develop the rear entry design and initial evaluations of the prototype.
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Graziosi, D., Ferl, J., and Splawn, K., "Evaluation of a Rear Entry System for an Advanced Spacesuit," SAE Technical Paper 2005-01-2976, 2005, https://doi.org/10.4271/2005-01-2976.Also In
References
- Graziosi, D. Ferl, J. Splawn, K. “An Examination of Spacesuit Entry Types and the Effects on Suit Architecture.” Space 2004 Conference AIAA 2004
- Graziosi, D Ferl, J Splawn, K “Development of a Space Suit Soft Upper Torso Mobility/Sizing Actuation System,” SAE International Conference on Environmental Systems, 2004-01-02342 Colorado Springs CO 2004
- Graziosi, D Lee, R “I-Suit Advanced Spacesuit Design Improvements and Performance Testing” SAE International Conference on Environmental Systems, 03ICES-27 Vancouver, Canada 2003
- “Zvezda Orlan-DMA-HL, Space Suit Assembly (SSA) and Life Support Subsystem (LSS) Mini-Data Book,” ‘Hamilton Standard 1996
- Stoklitsky, A Dr. Diener, M Lentz, J. -P. “EVA SUIT 2000 Concept and Architecture of the Suit Enclosure,” SAE International Conference on Environmental Systems, 941335 Friedrichshafen, Germany 1994
- Kosmo, J Spenny, W Gray, R Spampinato, P “Development of the NASA ZPS Mark III 57.2-kN/m 2 (8.3 psi) Space Suit,” SAE International Conference on Environmental Systems, 881101 San Fransisco, CA 1988