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Oil-damped mercury pool makes precise optical alignment tool
Mercury pool with a cover layer of high viscosity oil provides a reference reflector for precise alignment of optical instruments. The cover layer effectively damps any ripples in the mercury from support structure vibrations.
Impurity diffusion process for silicon semiconductors is fast and precise
Impurity diffusion process produces precision silicon semiconductor junctions economically and fast. Oxide is deposited on a silicon wafer and a controlled concentration of impurity atoms in gaseous form is simultaneously introduced into the reaction.
Nickel solution prepared for precision electroforming
Lightweight, precision optical reflectors are made by electroforming nickel onto masters. Steps for the plating bath preparation, process control testing, and bath composition adjustments are prescribed to avoid internal stresses and maintain dimensional accuracy of the electrodeposited metal.
Preliminary report on precision testing of gyroscopes on a high g centrifuge
Precision testing of navigation gyroscopes on high acceleration centrifuge for determination of drift coefficients
Determination of newton's gravitational con- stant, g, with improved precision status report, oct. 1, 1964 - mar. 31, 1965
Determination of Newton gravitational constant with improved precision
Ac ratio transformer technique for precision insertion loss measurements.
Precision microwave insertion loss measurement using AC ratio transformer technique
Mercury pool for precise alignment of instruments.
Mercury pool gravity reference system establshing fixed direction to which angles precisely measured by autocollimators can be referred
Mount enables precision adjustment of optical-instrumentation mirror
Mirror mount assembly allows the plane of a mirror to be adjusted through small angles about two orthogonal axes. The assembly, which has a mirror mount with two independently adjustable flexure joints, allows independent precise adjustment of the mirror mount with respect to each axis.
Heavy duty precision leveling jacks expedite setup time on horizontal boring mill
Leveling jack is a precise alignment tool which expedites the setup of components or assemblies up to 2500 pounds on horizontal boring mills. This tool eliminates the necessity of wedges and blocks to shim the components to proper position.
Precision CW laser automatic tracking system investigated
Precision laser tracker capable of tracking a low acceleration target to an accuracy of about 20 microradians rms is being constructed and tested. This laser tracking has the advantage of discriminating against other optical sources and the capability of simultaneously measuring range.
Precision methods using soft penetrating radiation for bone densitometry
Soft X-ray-radiation for bone densitometry using gamma radioisotope source in precision X-ray tube
Effect of reduced computer precision on a midcourse navigation and guidance system using optimal filtering and linear prediction
Reduced computer precision effect on midcourse navigation and guidance system using optimal filtering and linear prediction
Catalog of precisely reduced observations, no. P-13, 1962 Beta Mu 1 /ANNA 1B/
Catalog of precisely reduced observations of ANNA 1B satellite
A precision DC-potentiometer microwave insertion-loss test set
Precision dc potentiometer microwave insertion loss test set for calibrating low noise microwave receiving systems used in space communications
SPODP - Single Precision Orbit Determination Program
This Technical Memorandum describes the Single Precision Orbit Determination Program which was developed for operation under the data processing system of the Space Flight Operations Facility. Included are sections containing flow diagrams, load maps, the common storage map, input and output descriptions, subroutine writeups, operating instructions, and check cases. The computational methods employed by the program are described in the subroutine documentation.
Space - Single Precision Cowell Trajectory Program
Single Precision Cowell Trajectory program - digital computer program for trajectory computation
Design problems in a control system used for precise optical tracking of satellites and stars
Design problems and solutions in control system for precise optical tracking of stars and satellites