SEARCH · Search NASA
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.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Stress corrosion of titanium and its alloys at elevated temperatures is minimized by replacing trichloroethylene with methanol or methyl ethyl ketone as a degreasing agent. Wearing cotton gloves reduces stress corrosion from perspiration before the metal components are processed.
Photosensitive filler is added to curable epoxy resins to minimize stress from internal shrinkage during curing or polymerization. Cinnamic acid resins and cinnamal ketones may be added in the amount of 1 to 3 percent by weight of the resin mixture.
Computer program finds values of independent variables which minimize the dependent variable. This optimization program has been used on the F-1 and J-2 engine programs to establish minimum film coolant requirements.
Insulated feed-thru conduit minimizes heat pickup by a cryogenic fluid passing through the walls of a double high-vacuum chamber, and is capable of expansion and contraction with the walls of the chamber. It uses a bellows and rigid cylinder to provide a low-loss feed-thru for the cryogenic liquid.
Cleaning, pickling, and electroplating processes to minimize hydrogen embrittlement of ultrahigh strength steels
Communication systems development - minimizing range code acquisition time
Minimal energy ballistic trajectories for manned and unmanned space flights to Mercury
Valid equations derived for approximate continuous nonlinear minimal variance filtering - mathematical models
Function minimization without derivatives by sequence of quadratic programming problems
Stability and sensitivity requirements considered simultaneously in control system design, minimizing time domain sensitivity index and incorporating transient response characteristics
Constrained minimization problems in finite- dimensional spaces in unified approach
Computer-implemented minimization techniques used to determine realizability of N-variable switching function with single threshold-element device
Prefix coding of histograms for minimal storage
Constrained minimization problem extended to necessary conditions for characterizing noninferior points to determine vector-valued criteria in finite dimensional spaces
Flame mechanism experiments for solid material surface, measuring flame velocity, stressing space capsule fire hazard minimization
Analysis and minimization of error between sample functions, second order processes and their facsimiles in pulse code modulation telemetry
Compressed food products to minimize storage space for military applications
Convergence theorems for Gauss-Seidel and other minimization algorithms