Transient analysis attitude control propulsion systems computer program documentation and user's manual
Computer program documentation and user manual for transient analysis attitude control propulsion systems
Walsh, T. J.↗
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Calibration standards and field instruments for the precision measurement of insolation
The design of a fieldworthy survey instrument based on a developed radiation calibration standard is discussed. The radiometer system, a fieldworthy modification of Pacrad, is an all-weather solar radiometer, and a field test is described which demonstrates the instrument's stability in severe environments over an extended period of time. It is suggested that the instrument may be considered a transfer standard as well as a radiometer. It is hoped that future modifications might reduce the 15-deg view angle and improve the tracking system to eliminate weekly manual declination adjustments.
Reid, M. S.↗
Deployable and erectable concepts for large spacecraft
The structural proportions of minimum-mass tetrahedral truss platforms designed for low earth and geosynchronous orbit are determined by means of computerized sizing techniques, taking into account multiple design requirements and constraints. Strut dimensions characterizing minimum mass designs are found to be significantly more slender than those used for conventional structural applications. It is also shown that the number of shuttle flights required by deployable trusses becomes excessive above certain critical stiffness values, and that an automated assembler can achieve rates of 1 min/strut, by comparison with 2-5 min/strut for two astronauts using manual labor.
Bush, H. G.↗
NASTRAN user's guide (Level 17.5)
The user's guide is a handbook for engineers and analysts who use the NASTRAN finite element computer program supplements the NASTRAN Theoretical Manual (NASA SP-221), the NASTRAN User's Manual (NASA SP-222), the NASTRAN Programmer's Manual (NASA SP-223), and the NASTRAN Demonstration Program Manual (NASA SP-224). It provides modeling hints, attributes of the program, and references to the four manuals listed.
Field, E. I.↗
PASCO: Structural panel analysis and sizing code: Users manual - Revised
A computer code denoted PASCO is described for analyzing and sizing uniaxially stiffened composite panels. Buckling and vibration analyses are carried out with a linked plate analysis computer code denoted VIPASA, which is included in PASCO. Sizing is based on nonlinear mathematical programming techniques and employs a computer code denoted CONMIN, also included in PASCO. Design requirements considered are initial buckling, material strength, stiffness and vibration frequency. A user's manual for PASCO is presented.
Anderson, M. S.↗
Mechanized Polishing of Optical Rod and Fiber Ends
Workpiece holder for standard grinding and polishing machine makes it easier to produce optical finish and shape on end of metal or glass rod or bundle of optical fibers. Previously, glass parts lapped and polished manually, time-consuming procedure calling for considerable skill.
Gum, J. S.↗
Shuttle rendezvous and proximity operations
Shuttle rendezvous and proximity operations trajectory control techniques are reviewed and it is noted that they have been affected by many factors including Shuttle system design constraints such as limited forward RCS and single point radar failures. Crew training requirements and mission operations constraints such as large launch windows, flexibility, and contingency profile interrupts are also integral factors. The resulting trajectory control design primarily uses ground support for the launch and orbit adjust phases, standardized crew techniques utilizing onboard software for the relative navigation flight phase, and mission unique manual control for a flexible proximity operations phase.
Pearson, Don J.↗
Manual control of an unstable system with visual and motion cues.
Control characteristics of human operator in control situations limited to use of visual vestibular sensing of motion
VISUAL CUE↗
Ground and Flight-Based Plant Microbial Interaction Research and Related Space Crop Production Applications
Explore the source record for details and available documents.
Emerick Larkin↗
Midcourse navigation using statistical filter theory, a manual theodolite, and symbolic computer control
Midcourse navigation using statistical filter theory, manual theodolite, and symbolic computer control applied to manned spacecraft
MIDCOURSE GUIDANCE↗
User's Manual for Computer Program HEPCAT
HEPCAT computer program for rocket engine test data reduction and performance analysis - users manual
Garza, C. C.↗
Null device for hand controller Patent
Manual control mechanism for adjusting control rod to null position
Newcomb, J. F.↗
Manually-aided on-board Apollo cislunar navigation
Space navigator operations, procedures and computer interface and manually aided onboard Apollo cislunar navigation system possible improvement
Brennan, P. J.↗
An evaluation of low-visibility landing systems by simulation
Helicopter automatic and manual low visibility landing systems evaluation by hybrid computer simulation
Koziol, J. S., Jr.↗
GSFC Venus atmosphere simulator
The design and preliminary testing of a Venus Atmosphere Simulation System are described. The system was designed for testing a quadrupole mass spectrometer proposed for the Pioneer-Venus Experiment. The system is capable of providing programmed temperature cycles up to 550 C, and manually controlled pressure up to 100 atmospheres.
Cridlin, M. S.↗
Automatically classifying Earth features from orbit
Solid state circuit classifies satellite imagery by spectral signature of vegetation, bare land, water, clouds, or snow. Circuit can be used to sort and separate specific imagery by signature so that only useful data is transmitted to earth. Device saves time and costs involved in manual separation of data.
Holstrom, R. L.↗
Development of a three-dimensional supersonic inlet flow analysis
A method for computing three dimensional flow in supersonic inlets is described. An approximate set of governing equations is given for viscous flows which have a primary flow direction. The governing equations are written in general orthogonal coordinates. These equations are modified in the subsonic region of the flow to prevent the phenomenon of branching. Results are presented for the two sample cases: a Mach number equals 2.5 flow in a square duct, and a Mach number equals 3.0 flow in a research jet engine inlet. In the latter case the computed results are compared with the experimental data. A users' manual is included.
Buggeln, R. C.↗
Burner liner thermal/structural load modelling
A serious problem exists interfacing the output temperatures and temperature gradients from either the heat transfer codes or engine tests with the input to stress analysis codes. A thermal load transfer code was developed and was used in conjunction with a three-dimensional model of a combustor liner for verification. The 3D heat transfer and stress analysis models of combustor liners and turbine blades were used to validate the mapped temperature produced by the transfer module. Verification cases were made for both finite element and finite difference heat transfer codes. A user manual for the code was written and is available.
Maffeo, R. J.↗