Approximate Optimal Atmospheric Entry Trajectories

Approximate optimal atmospheric entry trajectories maximizing terminal function of velocity, heading angle, flight path angle, and altitud

Atmospheric entry heating of cosmic dust

A computer simulation of the atmospheric entry deceleration and heating for micrometeorites into a planetary atmosphere was developed. The results of this model were compared to an earlier model. The major difference between the extent of heating experienced in the two models results from an underestimation of the atmospheric density at altitudes above 130 km in the earlier model. Thus the earlier model systematically overestimates the peak temperature reached on atmospheric entry. The discrepancies are small for near vertical entry and/or high density particles, where little deceleration is experienced at high altitudes. For particles entering at grazing incidence and/or of low density the discrepancies are more pronounced. Gravitational enhancement, which is a function of geocentric velocity at the collection opportunity, was found to bias near Earth cosmic dust collections in favor of low velocity particles. The effect is to increase the proportion of low velocity dust, predominately from asteroids, in the stratospheric cosmic dust collections and on Earth orbiting spacecraft impact surfaces over its proportion in the interplanetary dust cloud

Detection of, and communication with space vehicles during atmospheric entry, problems in simulation

Detection of, and communication with spacecraft during atmospheric entry - simulation problem

Entry Dynamics of a Spinning Vehicle

Solution for angular motion analysis on spinning atmospheric entry vehicl

Radiative and convective heating during atmospheric entry

Radiative and convective heating during atmospheric entr

Applied mechanics

Computerized simulation of Venus atmospheric entry by earth reentry, and test program on soil response to landing load

Experimental Simulation of Volatile Organic Contributions to Planetary Atmospheres and Surfaces

We present the results of a new simulation of the atmospheric entry heating experienced by extraterrestrial dust particles, quantifying their volatile loss into the early Earth atmosphere and characterising their organic volatile components

Constricted high enthalpy arc heater design and performance data, including calculations for a 10 MW design First interim technical report

Performance prediction and design analysis of constricted coaxial-flow arc air heaters for materials testing and atmospheric entry simulatio

Supersonic flow over convex and concave shapes with radiation and ablation effects

Numerical method of unsteady adjustment for calculating inviscid flow fields about convex and concave shapes on atmospheric entry with ablatio

Stagnation point heat transfer during hypervelocity atmospheric entry

Stagnation point heat transfer during hypervelocit