Engineering topics

Sohl, G.

Publications and source records attributed to Sohl, G..

17 records

NASA NTRS2004

Recent developments in the ROAMS planetary rover simulation environment

This paper describes recent developments in the ROAMS physics-based simulator for planetary surface exploration rover vehicles. ROAMS includes models for various subsystems and components of the robotic vehicle including its mechanical subsystem, sensors, on-board resources, on-board control software, the terrain environment and terrain/vehicle interactions. The ROAMS simulator can be used for stand-alone simulation, closed-loop simulations with on-board software or for operator-in-the-loop simulations.

Sohl, G.↗

NASA NTRS2003

ROAMS: planetary surface rover simulation environment

This paper describes the ongoing development of the ROAMS physics-based simulator for planetary surface exploration rover vehicles.

rovers modeling simulation↗

NASA NTRS2002

DSENDS- a high fidelity dynamics and spacecraft simulator for entry, descent, and surface landing

We briefly describe the core tool capabilities in dynamics, instrument/actuator device models, and real-time simulation engineering.

spacecraft dynamics, entry descent landing simulat↗

NASA NTRS1969

Self-starting circuit for switching regulators

Schematic is provided on a self-starting circuit for a switching regulator which uses a logic circuit to sense a change in output voltage and provides a correction signal for dc power sources. With this device, the total power consumed by the logic circuitry is held to a minimum, and the circuit receives the optimum regulated supply power.

Schraut, E. H.↗

NASA NTRS1968

Ion engine casing construction and method of making same Patent

Permanently magnetized ion engine casing construction for use in spacecraft propulsion systems

Sohl, G.↗

NASA NTRS1968

Performance of a cesium bombardment ion engine with a self-rectifying discharge and automatic controls.

Cesium bombardment ion engine performance, giving starting circuit and automatic discharge power control system

Dillon, T. R.↗

NASA NTRS1967

Performance of a cesium bombardment ion engine with a self-rectifying discharge and automatic controls.

Cesium bombardment ion engine performance, giving starting circuit and automatic discharge power control system

PROPULSION SYSTEM PERFORMANCE↗

NASA NTRS1967

Electric propulsion for satellite position and attitude control.

Electric propulsion applied to satellite stationkeeping and attitude control, noting ion engine resistojet combination providing complete redundancy

ION ENGINE↗

NASA NTRS1967

Electron bombardment cesium ion engine system Summary report, 3 May 1965 - 16 Dec. 1966

Design, development, and life tests of electron bombardment cesium ion engine system, permanent magnet engine, and ac discharge engine

LIFETIME↗

NASA NTRS1967

Focussing system for an ion source having apertured electrodes Patent

Apertured electrode focusing system for ion sources with nonuniform plasma density

Sohl, G.↗

NASA NTRS1966

Cesium electron bombardment ion engines.

Comparison of electromagnet and permanent magnet versions of electron bombardment cesium ion engine

ELECTRON BOMBARDMENT↗

NASA NTRS1966

Life testing of electron-bombardment cesium ion engines.

Life testing of electron-bombardment cesium ion engine designed for power-to-thrust ratio of 160 kw/lb

FATIGUE LIFE↗

NASA NTRS1965

Ion rocket system research and development Final report, 24 Feb. 1964 - 25 Jun. 1965

Design studies and testing of ion rocket engine and zero gravity feed system

ROCKET ENGINE↗

NASA NTRS1965

Electron bombardment cesium ion engine system quarterly report, 3 may - 31 jul. 1965

Electron bombardment cesium ion engine - research and development

ELECTRON BOMBARDMENT↗

NASA NTRS1965

Cesium electron bombardment ion engines.

Comparison of electromagnet and permanent magnet versions of electron bombardment cesium ion engine

ELECTRON BOMBARDMENT↗

NASA NTRS1965

Automatic control systems for ion engines.

Automatic control systems for electron bombardment and contact ion engines

ION ENGINE↗

NASA NTRS1964

Development of automatic control systems for electron bombardment and contact ion engines

Cesium vapor automatic control systems for electron bombardment and contact ion engines

ION ENGINE↗