Optimal guidance for ascent trajectories into circular orbits.
Optimal guidance equations for ascent trajectories into circular orbits, developing feedback guidance loop for real onboard control system
ASCENT TRAJECTORY↗
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Results for “TRAJECTORIES”
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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Trajectory sensitivity of an optimal control system.
Optimal control for linear system with respect to performance functional which includes trajectory sensitivity.
Trajectory optimization↗
Trajectory design for planetary mission analysis.
Trajectory design and computer programs for planetary mission analysis
COMPUTER PROGRAM↗
Trajectory determination from observational data.
Trajectory determination from optical and radar data of spacecraft
OPTICAL TRACKING↗
A modified quasi-linearization method for solving trajectory optimization problems.
Modified quasi-linearization method for numerically solving trajectory optimization problems with undetermined terminal time
LINEARIZATION↗
Automatic design of optimum Atlas-Agena vehicle trajectories.
Optimization of Atlas-Agena trajectories via steepest ascent computer program
TRAJECTORY OPTIMIZATION↗
The simultaneous determination of rocket trajectories and rapid auroral variations.
Simultaneous recording of rocket trajectory and rapid auroral variations using high sensitivity image orthicon TV system
IMAGE ORTHICON TUBE↗
An analysis of minimum heat trajectories for entry at hyperbolic speeds.
Optimum trajectory control for minimum heating paths during manned vehicle reentry at hyperbolic speeds
OPTIMAL CONTROL↗
Powered flight trajectory determination techniques as applied to Saturn V vehicles.
Powered flight trajectory determination for Saturn V vehicles through computer method
SPACECRAFT TRAJECTORY↗
Trajectory modes for manned and unmanned missions to Mercury - 1980-2000.
Trajectory modes for manned and unmanned missions to Mercury, 1980-2000
SPACE MISSION↗
Rapid computation of optimal trajectories.
Generalized indirect method solving two-point boundary value problems for rapid optimal trajectory computation
DIFFERENTIAL EQUATION↗
Trajectory analysis and optimization of a low- thrust solar electric Jupiter flyby mission.
Trajectory optimization, performance and other factors in analysis of low thrust solar electric propulsion Jupiter flyby mission
TRAJECTORY OPTIMIZATION↗
A direct method for estimating Lagrange's multipliers in trajectory optimization problems.
Lagrange multipliers in two-point boundary condition problems for trajectory optimization estimated by direct method
NUMERICAL INTEGRATION↗
Sequential estimation of observation error variances in a trajectory estimation problem.
Sequential trajectory estimation improved by implementing simple running estimates of observation error variances
BAYESIAN STATISTICS↗
Entry trajectory, entry environment, and analysis of spacecraft motion for the RAM C-3 flight experiment
The RAM C-3 flight experiment was launched to study the problem of radiofrequency blackout at an entry velocity of 24,300 ft/sec. The flight is described, and data for the entry trajectory and environment, which include the effects of actual temperature measured the day of launch, are presented. An analysis of entry spacecraft motions was performed. This analysis included the determination of wind angles from measured accelerations and estimates of wind angles at high altitudes from gyro-measured rotation rates. The maximum wind angles were found to be less than 5 deg to the point of pitch-roll resonance where the total wind angle increased to 8.5 deg and the roll rate started decreasing. A plausible cause for the decrease in roll rate was shown to be a combination of trim angle and an offset center of gravity.
RAM↗
Trajectories to Comets Using Solar Electric Propulsion
In situ analysis of a cometary nucleus and return of a sample are high priority scientific goals. Rendezvous and sample return trajectories to comets using low-thrust ion propulsion are presented.
trajectory comet low-thrust propulsion↗
Trajectory Design for a Europa Orbitter Mission: A Plethora of Astrodynamic Challenges
The icy moon of Europa is a hot topic in planetary exploration. This paper discusses the trajectory design of a Europa orbiter mission intended to find out if Europa is a possible habitat for extraterrestrial life.
Jupiter spacecraft trajectory design techniques sa↗
Real-Time Trajectory Generation via Task Space Velocity Blending
This paper presents a new velocity blending approach to the problem of task space trajectory generation.
trajectory generation velocity blending↗