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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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Circular manifold with tangential orifices at the inner circumference provides for the vapor constituent of a vaporized cryogenic propellant to enter a rocket combustion chamber before the liquid constituent. The vapor is separated from the liquid by centrifugal action and precedes it into the chamber through carefully positioned orifices.
Liquid coolant chill tool provides uniform cooling to materials adjacent to weld areas on long or contoured butt welds. This tool incorporates a manifold that clamps to the weld joint by vacuum and circulates liquid in direct contact with adjacent material.
Cold air performance of scale model oxidizer pump drive turbine feedpipe-manifold-nozzle assembly for M-1 rocket engine
Poison control tube and manifold system for reactivity control of tungsten water moderated rocket reactor
Cold air performance test of scale model oxidizer pump drive turbine for M-1 engine - performance of first stage with inlet feedpipe manifold assembly
Optimization of stochastic control processes with respect to probability of entering target manifold in specific time interval
Chemical poison control tube and manifold used for reactivity control of rocket reactor
Suboptimal controls maximizing probability of entering target manifold
Heat transfer and fluid flow performance of hydrogen cooled panels and manifold systems
Algorithm for optimal controls maximizing probability of linear time dependent control processes entering target manifold under random disturbances
Absorption strengths of j-manifolds in R branch of Jupiter atmosphere methane band, discussing fine structure blending
Integral manifolds of third order autonomous differential equations with unstable equilibrium point, investigating forward and negative asymptotic problems
Sealed electric storage battery with gas manifold interconnecting each cell
Carbon monoxide oxidation rates for automobile exhaust manifold reactor conditions
Bounded integral manifolds existence for perturbed system of nonlinear differential equations near critical point, periodic orbit or periodic surface
Solar chromosphere and corona manifold structure data, using high resolution filter photography
The purpose of this paper is to study questions regarding controllability, observability, and realization theory for a particular class of systems for which the state space is a differentiable manifold which is simultaneously a group or, more generally, a coset space. We show that it is possible to give rather explicit expressions for the reachable set and the set of indistinguishable states in the case of autonomous systems. We also establish a type of state space isomorphism theorem. Our objective is to reduce all questions about the system to questions about Lie algebras generated from the coefficient matrices entering in the description of the system and in that way arrive at conditions which are easily visualized and tested.
The laser beam manifold, a device for transforming a single, narrow, collimated beam of light into several beams of desired intensity ratios is described. The device consists of a single optical substrate with a metallic coating on both optical surfaces. By changing the entry point, the number of outgoing beams can be varied.