Thermal design of inflatable spherical shadow shields
Heat transfer from balloon type shadow shield to cryogen storage tank - mathematical discussion
Campbell, J. P.↗
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Results for “inflatable”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Inflation and performance of three parachute configurations from supersonic flight tests in a low-density environment
Flight test performance of supersonic parachutes in low density environment
Bendura, R. J.↗
The effect of intermittent leg-cuff inflation and intermittent exercise on the tilt table response after ten days bed recumbency
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Vogt, F. B.↗
Status of Passive Inflatable Falling-Sphere Technology for Atmospheric Sensing to 100 Km
Research and development of falling spheres for meteorological rocket soundings of upper atmosphere
Source record↗
Stable, inflatable life raft for high seas rescue operations
Raft is easily deployed and highly maneuverable in water. It has false bottom of water ballast containers attached to underside, making it exceptionally stable platform from which swimmers can operate. Raft is attachable to external moorings.
Barnett, J. H., Jr.↗
Inflatable support structure Patent
Pneumatic cantilever beams and platform for space erectable structure
Pleasants, J. E.↗
The inflation of the inner magnetosphere
OGO-B and OGO-E measurements on magnetospheric field magnitudes and disturbances caused by ring currents
Sugiura, M.↗
Inflatable tether Patent
Space expandable tether device for use as passageway between two docked spacecraft
Huber, W. C.↗
Effect of Electron Irriation on the Mechanical Properties of a Composite Foil for Inflatable Satellites
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James, T. G.↗
Lightweight inflatable material with low permeability
Material features combination of Mylar, for strength, and Saran, for impermeable qualities. Second lamination of Mylar prevents blocking, adds strength, and increases barrier rating. Different combinations of laminations produce variety of thicknesses and barrier ratings. Material can be metallized for increased barrier reliability and radar reflectivity, and can be treated with a heat-resistant coating.
White, E. C.↗
Aerodynamic drag and stability characteristics of solid and inflatable decelerator devices at supersonic speeds
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Mcshera, J. T., Jr.↗
Investigation of Kevlar fabric based materials for use with inflatable structures
Design, manufacture and testing of laminated and coated composite materials incorporating a structural matrix of Kevlar are reported in detail. The practicality of using Kevlar in aerostat materials is demonstrated and data are provided on practical weaves, lamination and coating particulars, rigidity, strength, weight, elastic coefficients, abrasion resistance, crease effects, peel strength, blocking tendencies, helium permeability, and fabrication techniques. Properties of the Kevlar based materials are compared with conventional, Dacron reinforced counterparts. A comprehensive test and qualification program is discussed and quantitative biaxial tensile and shear test data are provided. The investigation shows that single ply laminates of Kevlar and plastic films offer significant strength to weight improvements, are less permeable than two ply coated materials, but have a lower flex life.
Niccum, R. J.↗
Investigation of Kevlar fabric-based materials for use with inflatable structures
Design, manufacture and testing of laminated and coated composite materials incorporating a structural matrix of Kevlar are reported. The practicality of using Kevlar in aerostat materials is demonstrated, and data are provided on practical weaves, lamination and coating particulars, rigidity, strength, weight, elastic coefficients, abrasion resistance, crease effects, peel strength, blocking tendencies, helium permeability, and fabrication techniques. Properties of the Kevlar-based materials are compared with conventional Dacron-reinforced counterparts. A comprehensive test and qualification program is discussed, and considerable quantitative biaxial tensile and shear test data are provided.
Niccum, R. J.↗
Load deflection characteristics of inflated structures
A single, closed form relationship to relate load to the deformed dimensions of the horizontal torus was developed. Wall elasticity was included in the analysis, and special care was taken to predict the final footprint area of the loaded structure. The test fixture utilized is shown. The tori used for the bulk of the testing were rubber inner tubes for a 32 and 160 pneumatic tire. The inner tube being tested was plumbed, to a mercury-filled manometer, which had a 50 inch measurement capacity, by use of a special adapter. The adapter fit over the valve stem and allowed air to be added from a shop-air source and to be bled through the standard valve mechanism. In this fashion, tests requiring the maintenance of a constant indication of air pressure could be run with little difficulty.
Baumgarten, J. R.↗
Inflatable device for installing strain gage bridges
Methods and devices for installing in a tubular shaft multiple strain gages are disclosed with focus on a method and a device for pneumatically forcing strain gages into seated engagement with the internal surfaces of a tubular shaft in an installation of multiple strain gages in a tubular shaft. The strain gages or other electron devices are seated in a template-like component which is wrapped about a pneumatically expansible body. The component is inserted into a shaft and the body is pneumatically expanded after a suitable adhesive was applied to the surfaces.
Cook, C. E.↗
Inflatable Perimeter Seal
Effective, inexpensive pressure seal between two flat surfaces formed from silicone rubber tubing. Resembling refrigerator seal, pressure seal especially useful where shape of sealed region irregular or subject to change. Unlike gaskets and O-rings, tubing seals require no machined grooves or custom-made parts and not adversely affected by warpage of sealed surfaces.
Shepherd, Clayton C., Jr.↗
Double inflation - A possible resolution of the large-scale structure problem
A model is presented for the large-scale structure of the universe in which two successive inflationary phases resulted in large small-scale and small large-scale density fluctuations. This bimodal density fluctuation spectrum in an Omega = 1 universe dominated by hot dark matter leads to large-scale structure of the galaxy distribution that is consistent with recent observational results. In particular, large, nearly empty voids and significant large-scale peculiar velocity fields are produced over scales of about 100 Mpc, while the small-scale structure over less than about 10 Mpc resembles that in a low-density universe, as observed. Detailed analytical calculations and numerical simulations are given of the spatial and velocity correlations.
Turner, Michael S.↗
Inflation in anisotropic scalar-tensor theories
The existence of an inflationary phase in anisotropic Scalar-Tensor Theories is investigated by means of a conformal transformation that allows us to rewrite these theories as gravity minimally coupled to a scalar field with a nontrivial potential. The explicit form of the potential is then used and the No Hair Theorem concludes that there is an inflationary phase in all open or flat anisotropic spacetimes in these theories. Several examples are constructed where the effect becomes manifest.
Pimentel, Luis O.↗