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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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Fluorinated polyethers are suitable lubricants for rolling-element bearings in cryogenic systems. Lubrication effectiveness is comparable to that of super-refined mineral oil lubricants operating at room temperature.
Capillary tube flowmeter measures ultra-low flows of very corrosive fluids /such as chlorine trifluoride and liquid fluorine/ and other liquids with reasonable accuracy. Flowmeter utilizes differential pressure transducer and operates on the principle that for laminar flow in the tube, pressure drop is proportional to flow rate.
Series of highly fluorinated polyurethanes have been prepared as basis for development of nonflammable structural adhesives for use over wide temperature range. Backbone of polyurethanes is polyether of perfluoropropylene oxide. Adhesive system is developed that exhibits adequate strength properties and is self-extinguishing in oxygen-rich atmospheres.
Fluorinated ethylene propylene /FEP/ film is substituted for epoxy cement in bonding glass covers to silicon solar cells. Insensitivity of FEP to ultraviolet radiation reduces requirement for filtering and does not impair cell performance. Cell costs are reduced and cover mounting is simplified.
Polymeric fuel tank sealants incorporating fluorine atoms for hypersonic aircraft
Development of nonflammable fluorinated polyurethane adhesives for spacecraft systems
Resin systems for matrix material in ablative composite for liquid rocket combustion chambers using fluorine-containing propellants
Thermal control concepts for space storable fluorine hydrazine propulsion module
Fabrication and thermal performance of regeneratively cooled fluorine hydrogen thrust chamber
Evaluating cost of four processes for production of oxygen difluoride - fluorine-caustic least expensive
Fabrication and acceptance testing, fluorine compatibility testing, valve refurbishment and testing, environmental testing, and design of space storable oxidizer valve
Feasibility of fluorinated ethylene propylene as replacement for conventional silicon solar cell covers
Chemical synthesis of hydroxy terminated perfluoro ethers as intermediates for highly fluorinated polyurethane resins
Oxidation resistance and high temperature tests of rhenium, tungsten, hafnium, and tantalum matrix composites with iridium in oxygen, fluorine, and boron atmospheres for liquid propellant engines
Design, fabrication, and testing of pneumatically operated liquid fluorine shutoff valve
Optical properties of metallized fluorinated ethylene propylene Teflon films with various thicknesses, discussing suitability as spacecraft thermal control surface
Mars, Venus and earth atmospheres, considering abundance of volatiles such as carbon dioxide, water, oxygen, nitrogen, argon, carbon monoxide, chlorine and fluorine