The Voyager programme.
Voyager project goals, orbital operations, capsule descent, navigational systems, etc
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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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Voyager project goals, orbital operations, capsule descent, navigational systems, etc
Computer program LASIM for spacecraft tracking and control in laser optical communication systems
Spacecraft utilization for earth resources noting remote sensing programs in meteorology, geodesy, oceanography, hydrology and geology
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Generalized digital filter is a special purpose computer. The term digital filter is an algorithm which accepts an input sequence of numbers and transforms it into an output number sequence. The organization of the computer, the logical design and synthesis, and experimentaion with the computer in two sampled data control systems is discussed.
Runway and highway traction studies in England
Critical water depth required for hydroplaning
Statistical method for estimating position and velocity of spacecraft
Model input requirements, flow charts, and program listing for launch vehicle assignment
Model input requirements, flow charts, and program listing for launch vehicle assignment
Application of spacecraft technology to aircraft for improvement in systems, materials, and performance
Automatic controlled thermal fatigue testing apparatus
Manual of computer program for probabilistic optimal launch vehicle assignment and budget smoothing model
Time division multiplexed telemetry transmitting system controlled by programmed memory
Appendixes are presented that provide model input requirements, a sample case, flow charts, and a program listing. At the beginning of each appendix, descriptive details and technical comments are provided to indicate any special instructions applicable to the use of that appendix. In addition, the program listing includes comment cards that state the purpose of each subroutine in the complete program and describe operations performed within that subroutine. The input requirements includes details on the many options that adapt the program to the specific needs of the analyst for a particular problem.
For abstract, see N72-17902.
The analytical models developed for the Space Propulsion Automated Synthesis Modeling (SPASM) program are presented. Weight scaling laws developed during this study are incorporated into the program's scaling data bank. A detail listing, logic diagram and input/output formats are supplied for the SPASM program. Two test examples for one to four-stage vehicles performing different types of missions are shown to demonstrate the program's capability and versatility.
The prospective user of the shuttle operations simulation (SOS) model is given sufficient information to enable him to perform simulation studies of the space shuttle launch-to-launch operations cycle. The procedures used for modifying the SOS model to meet user requirements are described. The various control card sequences required to execute the SOS model are given. The report is written for users with varying computer simulation experience. A description of the components of the SOS model is included that presents both an explanation of the logic involved in the simulation of the shuttle operations cycle and a description of the routines used to support the actual simulation.