Results 81 to 90 of about 203,976 (205)
Electromagnetic Casimir piston in higher dimensional spacetimes
, 2011 We consider the Casimir effect of the electromagnetic field in a higher dimensional spacetime of the form $M\times \mathcal{N}$, where $M$ is the 4-dimensional Minkowski spacetime and $\mathcal{N}$ is an $n$-dimensional compact manifold.
B. Felsager +7 more
core +1 more source
Development of EPA aircraft piston engine emission standards [PDF]
, 1976 Piston engine light aircraft are significant sources of carbon monoxide in the vicinity of high activity general aviation airports. Substantial reductions in carbon monoxide were achieved by fuel mixture leaning using improved fuel management systems ...
Houtman, W.
core +1 more source
Pressure limiting propellant actuating system [PDF]
, 1980 A pressure limiting propellant activating system for simultaneously limiting the output force while maintaining a constant output pressure from the combustion chamber is described.
Murphy, D. W., Reese, P. B.
core +1 more source
, 2003 We consider a massless scalar field obeying Dirichlet boundary conditions on the walls of a two-dimensional L x b rectangular box, divided by a movable partition (piston) into two compartments of dimensions a x b and (L-a) x b.
D.R. Phillips +19 more
core +2 more sources
Comparison of free-piston Stirling engine model predictions with RE1000 engine test data [PDF]
Predictions of a free-piston Stirling engine model are compared with RE1000 engine test data taken at NASA-Lewis Research Center. The model validation and the engine testing are being done under a joint interagency agreement between the Department of ...
Tew, R. C., Jr.
core +1 more source
Method and apparatus for waste collection and storage [PDF]
, 1991 A method and apparatus are disclosed for collection of fecal matter designed to operate efficiently in zero gravity environment. The system comprises a waste collection area within a body having a seat opening. Low pressure within a waste collection area
Thornton, William E., Jr. +1 more
core +1 more source
Critical behavior of two freely evolving granular gases separated by an adiabatic piston
, 2010 Two granular gases separated by an adiabatic piston and initially in the same macroscopic state are considered. It is found that a phase transition with an spontaneous symmetry breaking occurs.
Brey, J. Javier, Khalil, Nagi
core +1 more source
Method for waste collection and storage [PDF]
, 1990 A method for collection of fecal matter designed to operate efficiently in a zero gravity environment was invented. The system consists of a waste collection area within a body having a seat opening.
Thornton, William E., Jr. +1 more
core +1 more source
An overview of NASA research on positive displacement general-aviation engines [PDF]
, 1980 The research and technology program related to improved and advanced general aviation engines is described. Current research is directed at the near-term improvement of conventional air-cooled spark-ignition piston engines and at future alternative ...
Kempke, E. E., Jr.
core +1 more source
System for calibrating pressure transducer [PDF]
, 1973 A system for calibrating a pressure transducer which has a reference portion and an active portion is reported. A miniature selector valve is positioned immediately adjacent the pressure transducer.
Rollins, G. N.
core +1 more source