Webb’s Elastic Counter Pressure Suit (ECPS) Technical Documentation is available to to download in PDF format. Adobe Acrobat Reader is required to view these documents.  [download acrobat reader]

a suit for space explorers A Suit for Space Explorers – Description and Definition of a Project
by Paul Webb, M.D.

As space programs in the United States, Europe, Russia, Japan, China and India, and in private space companies, take the next steps into space, a more functional and economical space suit is needed. The rigid, gas-pressurized suits developed for NASA over the last 45 years are heavy, bulky and severely limit mobility. Fortunately, specialized knowledge of human physiology, improved fabrics and advanced textile manufacturing techniques allow for the development of an entirely new garment for space explorers. This garment will enable the exploration of the Moon and Mars as called for in NASA’s Vision for Space Exploration.

The Webb Elastic Garments Group has been formed to develop a prototype pressure suit that is significantly lighter and more flexible than the NASA design. The new garment will be more comfortable, provide vastly improved mobility, weigh less than a third of the conventional suit and require far less storage space. Starting from recent work with an early prototype, the company will develop a full, functional elastic suit using advanced textile technology. The plan is to demonstrate new space suit to likely users in two years.

The development team includes three physiologists with extensive experience in space and undersea medicine, environmental physiology, protective clothing and bioengineering. The team also includes an expert in textile technology with experience in materials and manufacturing methods.

Because of their affiliation with major research universities, the development team has access to the sophisticated research and testing equipment, including a high altitude chamber, which is necessary to develop and show off the newly developed garment.

This new suit development needs doing. To overcome resistance in the space suit establishment, we are seeking private investment to be able to demonstrate a compellingly persuasive elastic suit.

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phisiological limits of underpressure overpressure for mcp suits Phisiological Limits of Underpressure and Overpressure for Mechanical Counter Pressure Suits
by M. Reddig, K. Tanaka, A. Hargens, P. Webb, and C. Jarvis (2003)

The first concept and early experiments of a Mechanical Counter Pressure (MCP) spacesuit were published by Webb in the late 1960’s. MCP provides an alternative approach to the conventional full pressure suit that bears some significant advantages, such as increased mobility, dexterity, and tactility.  The presented ongoing research provides a thorough investigation of the physiological effect of mechanical counter pressure applied onto the human skin.  In this study, we investigated local microcirculatory effects produced with negative and positive ambient pressure on the lower body as a preliminary study for a lower body garment.  The data indicates that the positive pressure was less tolerable than negative pressure.  Lower body negative and positive pressure cause various responses in skin blood flow due to not only blood shifts but also direct exposure to pressure differentials.

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development of a space activity suit Development of a Space Activity Suit
by James F. Annis and Paul Webb (1971)

This report describes the development of a series of prototype Space Activity Suit (SAS) assemblies. The SAS is a new type of pressure suit designed especially for extravehicular activity. It consists of a set of carefully tailored elastic fabric garments which have been engineered to supply sufficient counterpressure to the body to permit subjects to breathe 02 at pressures up to 200 mm Hg without circulatory difficulty. A closed, positive pressure breathing system (PPBS) and a full bubble helmet were also developed to complete the system. The ultimate goal of the SAS is to improve the range of activity and decrease the energy cost of work associated with wearing conventional gas filled pressure suits.

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space activity suit elastic leotard The Space Activity Suit: An Elastic Leotard for Extravehicular Activity
by Paul Webb, M.D. (1968)

“To provide virtually unrestricted movements in all kinds of extravehicular activities in space, a Space Activity Suit is proposed, consisting of a powerful elastic leotard to counter to circulatory effects of breathing oxygen at a pressure of 170 mm.Hg.  The physiological basisc for such a garment is discussed.”

A prototype garment has been worn in the laboratory for up to 90 minutes while breathing at pressures of 30, 60, and 100 mm.HG.  Mobility and dexterity were excellent; no circulatory embarrassment appeared.  When an arm protected with an elastic gauntlet was exposed to less than 8 mm.Hg absolute for 20 minutes, there was no sign of gaseous swelling, dexterity was unimpeded, and circulation was maintained.

A successful Space Activity Suit promises these advantages over gas-filled pressure suits: complete mobility at small metabolic cost; simplicity and greater reliability; low risk if the garments torn; and physiological temperature regulation without cooling equipment.

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