Some problems of planetary atmosphere entry.
Space vehicles aerodynamic heating at hyperbolic entry speed, particulary ablation materials
Allen, H. J.↗
SEARCH · Engineering Papers
Results for “hyperbolic”
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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Optimum three-impulse transfer between an elliptic orbit and a non-coplanar escape asymptote.
Optimum three impulse transfer mode of escape from elliptic orbit to noncoplanar hyperbolic asymptote
Gerbracht, R. J.↗
Bibliography on techniques for solving partial differential equations by hybrid computation and other methods
Parabolic, elliptic, and hyperbolic partial differential equations using analog and hybrid methods - bibliographies
Finn, D. L.↗
Digital program analyzes supersonic flow field within bell-shaped rocket nozzles
Digital computer program computes and analyzes supersonic flow field in axisymmetric rocket nozzle for specified gas properties, nozzle geometry, and input or starting line. Method of characteristics is used for solution of set of hyperbolic partial differential equations.
Elliott, J. J.↗
Control of distributed-parameter systems
Optimal control of distributed-parameter systems of hyperbolic and parabolic type
Russell, D. L.↗
Advanced Electric Propulsion Research Final Report, 1 Jul. - 31 Dec. 1968
Advanced electric propulsion research including electrothermal engines with supersonic heat transfer, hyperbolic trajectories in Jupiter probe, and mercury electron bombardment thrustor
Mickelsen, W. R.↗
An analysis of finite-difference techniques applied to equations governing convective transfer
Finite difference analysis of hyperbolic partial differential equations
Lomax, H.↗
Minimum impulse transfer from circular orbits Quarterly progress report
Approximate analytical solution for minimum impulse transfer between circular orbit and given hyperbolic velocity vector at infinity
Source record↗
A Universal Solution of Lambert's Problem
Universal solution of Lambert problem for elliptic, parbolic, and hyperbolic motion
Estes, R. H.↗
A multiple user satellite system for navigation and traffic control
Multiple user satellite system for air navigation and traffic control, presenting comparative error analyses for position determination by spherical and hyperbolic ranging
Keane, L. M.↗
A perturbation theory of anisentropic flow with radiative heat transfer
Perturbation theory of supersonic steady anisentropic flow with radiative heat transfer using hyperbolic characteristic coordinates
Hsieh, T.↗
Optimal nonplanar escape from circular orbits
Minimum impulse transfer between circular orbit and hyperbolic trajectory velocity vector, assuming fixed transfer times
Edelbaum, T. N.↗
Classical path A and B functions for line broadening of positive ions
A, a and B functions for electron broadening of positive ions with hyperbolic path
Cooper, J.↗
Use of orbit-to-orbit shuttles as earth capture systems for round-trip planetary missions
Orbit-to-orbit shuttles as earth capture systems for round trip planetary missions, using hyperbolic rendezvous technique with returning interplanetary spacecraft
Brooks, D. R.↗
Space Flight Handbooks, Volume 3 - Planetary Flight Handbook. Part 8 - Jupiter Swingby Missions to Saturn, Uranus, Neptune, and Pluto. Supplement - Tabular Trajectory Data
The trajectory data are presented chronologically and are organized by holding the arrival date constant while varying the Earth departure date in increments of 10 days. Upon completion of the specified range of Earth departure dates, the arrival date is incremented and the range of departure dates is repeated. The range of departure and arrival dates and the corresponding increments are given in Table 5-1 for each launch opportunity. It should be noted that the interval in arrival date is increased in the long flight time region where the variation of the trajectory parameters is relatively small. The criteria used for the selection of these dates are, in general: (i) the minimum Earth departure hyperbolic excess speed (across the Earth departure window) shall not exceed 0.65 EMOS and (2) the periapsis radius at Jupiter shall not be less than 0.95 planet radii.
Source record↗
Cubic spline functions for curve fitting
FORTRAN cubic spline routine mathematically fits curve through given ordered set of points so that fitted curve nearly approximates curve generated by passing infinite thin spline through set of points. Generalized formulation includes trigonometric, hyperbolic, and damped cubic spline fits of third order.
Young, J. D.↗
Acoustic spectral analysis and testing techniques
Subjects covered in four reports are described including: (1) mathematical techniques for combining decibel levels of octaves or constant bandwidth: (2) techniques for determining equation for power spectral density function; (3) computer program to analyze acoustical test data; and (4) computer simulation of horn responses utilizing hyperbolic horn theory.
Hayes, C. D.↗
Automatic lightning location system
Hyperbolic triangulation method was used for locating lightning storm path and position from VHF lightning charge emissions. Possible applications in electric power companies, forest fire lookout centers, airports, and pipeline companies are indicated.
Holdsworth, T.↗