Fuels and Energy Sources

Methane

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Briefs: Physical Sciences
Effects of Temperature on Polymer/Carbon Chemical Sensors
Experiments were conducted on the effects of temperature, polymer molecular weight, and carbon loading on the electrical resistances of polymer/carbon-black composite films. The experiment were performed in a continuing effort to develop such films as part of the JPL Electronic Nose (ENose),...
Briefs: Materials
Electrocatalytic Reduction of Carbon Dioxide to Methane
A room-temperature electrocatalytic process that effects the overall chemical reaction CO2 + 2H2O → CH4 + 2O2 has been investigated as a means of removing carbon dioxide from air and restoring oxygen to the air. The process was originally intended for use in a spacecraft life-support system,...
Briefs: Green Design & Manufacturing
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Briefs: Mechanical & Fluid Systems
Mars Rocket Propulsion System
A report discusses the methane and carbon monoxide/LOX (McLOx) rocket for ascent from Mars as well as other critical space propulsion tasks. The system offers a specific impulse over 370 s — roughly 50 s higher than existing space-storable bio- propellants. Current Mars in-situ propellant production (ISPP)...
Briefs: Materials
An experiment has shown that when single- walled carbon nanotubes (SWNTs) are grown by chemical vapor deposition in the presence of an electric field of suitable strength, the nanotubes become...
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Briefs: Manufacturing & Prototyping
This innovation consists of a set of methodologies for preparing large area (>1 cm2) domains of single-atomic-layer graphite, also called graphene, in single (two-dimensional)...
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Briefs: Physical Sciences
Neon as a Buffer Gas for a Mercury-Ion Clock
One aspect of the topic of "Compact, Highly Stable Ion Clock" (NPO-43075), NASA Tech Briefs, Vol. 32, No. 5 (May 2008), page 63, is examined in more detail. To recapitulate: A developmental miniature mercury-ion clock has stability comparable to that of a hydrogen-maser clock. The ion-handling components...
Briefs: Materials
Efforts are underway to develop inexpensive, low-power electronic sensors, based on single-walled carbon nanotubes (SWCNTs), for measuring part-per-million and part-per-billion of selected...
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Briefs: Software
General Flow-Solver Code for Turbomachinery Applications
Phantom is a computer code intended primarily for real-fluid turbomachinery problems. It is based on Corsair, an ideal-gas turbomachinery code, developed by the same authors, which evolved from the ROTOR codes from NASA Ames. Phantom is applicable to real and ideal fluids, both compressible...
Briefs: Software
Rotating-Pump Design Code
Pump Design (PUMPDES) is a computer program for designing a rotating pump for liquid hydrogen, liquid oxygen, liquid nitrogen, water, methane, or ethane. Using realistic properties of these fluids provided by another program called "GASPAK," this code performs a station-by-station, mean-line analysis along the pump flow...
Briefs: Materials
Generating Aromatics From CO₂ on Mars or Natural Gas on Earth
“Methane to aromatics on Mars” (“METAMARS”) is the name of a process originally intended as a means of converting Martian atmospheric carbon dioxide to aromatic hydrocarbons and oxygen, which would be used as propellants for spacecraft to return to Earth. The process has been...
Briefs: Physical Sciences
Methane Clathrate Hydrate Prospecting
A method of prospecting for methane has been devised. The impetus for this method lies in the abundance of CH4 and the growing shortages of other fuels. The method is intended especially to enable identification of subpermafrost locations where significant amounts of methane are trapped in the form of methane...
Briefs: Mechanical & Fluid Systems
Small, Untethered, Mobile Robots for Inspecting Gas Pipes
Small, untethered mobile robots denoted gas-pipe explorers (GPEXs) have been proposed for inspecting the interiors of pipes used in the local distribution natural gas. The United States has network of gas- distribution pipes with a total length of approximately 109 m. These pipes are often...
Briefs: Manufacturing & Prototyping
A process has been proposed for growing carbon nanotubes aligned substantially parallel with the nominal planar surfaces of substrates and further aligned with patterns on the substrates. Prior to...
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Briefs: Mechanical & Fluid Systems
A proposal has been made to develop bimorph actuators and force sensors based on carbon nanotubes. The proposed devices could make it possible to generate, sense, and control displacements and...
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Briefs: Physical Sciences
Ultralight Balloon Systems for Exploring Uranus and Neptune
A report proposes ultralight balloon systems to carry a 10-kg payload, including scientific instruments for exploring the atmospheres of Uranus and Neptune. The system masses to be transported to those planets would be kept low by not transporting balloon-inflating gases. Each system...
Briefs: Materials
A program of research and development is addressing the feasibility of using magnetoplasmadynamic (MPD) sources in the chemical vapor deposition (CVD) of synthetic diamond films. Because of its...
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Briefs: Materials
A number of matrix resins that contain thermosetting plasticizers have been developed for use in the resin-transfer molding (RTM) of composite-material (fiber/matrix) parts. These...
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Briefs: Physical Sciences
Detecting Metal Ions by Voltammetry Using Diamond Electrodes
Experiments have demonstrated the feasibility of detecting multiple species of toxic metal ions and other ions of interest dissolved in water, by means of voltammetry with electrically conductive artificial diamond electrodes. Diamond is attractive as an electrode material because it is...
Briefs: Robotics, Automation & Control
A regenerable, low-power air-purification system has been proposed for (1) removing toxic gases from solid-waste-incinerator exhaust and/or (2) removing trace contaminants from breathable air....
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Briefs: Materials
A surface-micromachining process has been devised for use in fabricating microscopic polycrystalline diamond structures (e.g., bridges and cantilevers) as integral parts...
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Briefs: Physical Sciences
Improved silicon carbide-based Schottky diodes are undergoing development for use in detecting hydrocarbon (CxHy) and nitrogen oxide (NOx) gases at high temperatures. In comparison...
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