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| Title: | Insulation, Compressibility and Absorbency of Dry Suit Undergarments. |
| Authors: | Sterba, JA
Hanson, RS
Stiglich, JF |
| Keywords: | THERMAL INSULATION
UNDERWATER CLOTHING
UNDERWEAR
ABSORPTION
ARCTIC REGIONS
BARRIERS
COMPARISON
COMPRESSIVE PROPERTIES
CONTROL
DACRON
DIVERS
ENERGY
FOAM
HYDROPHOBIC PROPERTIES
LOW TEMPERATURE
POLYESTER PLASTICS
SATURATION
THERMAL RADIATION
RATINGS
REFLECTION
SELECTION
TEMPERATURE GRADIENTS
THERMAL CONDUCTIVITY
THICKNESS
UNMANNED
WATER
Absorbency
Dry Suit
Diving Equipment
LPN-NAVSEA-88-18A |
| Issue Date: | 1989 |
| Publisher: | NAVY EXPERIMENTAL DIVING UNIT PANAMA CITY FLA |
| Citation: | ADA215944 |
| Abstract: | Recent selection of new undergarments (U/G) for cold water diving has been based on anecdotal reports. Previous studies revealed hydrophobic microfibrous material (Thinsulate) to be superior in both insulation when wet and compressibility compared to open-cell foam. The objectives of this study included comparing Thinsulate against the new U/G materials in a controlled, unmanned study. After preliminary testing of 39 U/G composites, nine U/G were chosen: four using arctic fleece, radiant barrier and both Thinsulate and polyester battings from Defense Marketing Consultants (DMC), four using Thinsulate M-400 and M-600 from Diving Unlimited International (DUI) and the Flectalon U/G composite from Arktis Outdoor Products. Dry U/G per unit thickness showed few differences. Saturated with water, the superior U/g, per se, were Flectalon, DUI M-600 and one DMC U/G using Dupont Dacron-II batting. The superior wet U/G, per unit thickness, included the above and M-400 DUI U/G. In conclusion, rating compressibility, absorbency and insulation (wet), the superior U/G included Flectalon and DUI U/G, M-400 and M-600 weights. DMC U/G were ranked next, primarily due to high absorbency. The DMC radiant barrier did not significantly affect insulation by contributing any reflected radiant energy based upon the small temperature gradient between skin and water. Underwater clothing thermal conductivity; Underclothes thermal insulation. (edc) |
| Description: | Citation Status: Active; Citation Classification: Unclassified; Title Classification: Unclassified; Report Classification: Unclassified; Identifier Classification: Unclassified; Abstract Classification: Unclassified; Distribution Limitation(s): 01 - APPROVED FOR PUBLIC RELEASE; Information provided by the Department of Defense and the Defense Technical Information Center (http://www.dtic.mil/) is considered public information and may be distributed or copied unless otherwise specified. Use of appropriate byline/photo/image credits is requested. |
| Gov't Doc # : | ADA215944
NEDU-10-89 |
| URI: | http://archive.rubicon-foundation.org/4867 |
| Appears in Collections: | Navy Experimental Diving Unit (NEDU)
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| NEDU_1989_10.pdf | | 1375Kb | Adobe PDF | View/Open |
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