UID:
kobvindex_GFZ20201127082526
Umfang:
iv, 4 Seiten
,
Illustrationen
Serie:
Special report / Cold Regions Research and Engineering Laboratory, Corps of Engineers, US Army 116
Inhalt:
Abstract: Pendulum steering, a new concept of attitude stabilization for thermal probes or coring drills in ice, eliminates instability. The center of support is placed above the center of gravity. A lower and upper hot point produce melt penetration. The ratio of their power levels is the basis for stabilization, which is provided by the automatic control of the heater in the upper hot point. This feature makes possible a single thermal probe design that is suitable for all ice cap temperatures and a wide range of penetration rates (i.e., applied power levels). The simplicity of a thermal probe with pendulum steering suggests availability at modest cost and versatility as a widely applicable tool.
Anmerkung:
CONTENTS
Preface
Summary
Introduction
The principle of pendulum steering
Analysis of the power requirements
The upper heater control
Laboratory tests
Summary
In:
Special report / Cold Regions Research and Engineering Laboratory, Corps of Engineers, US Army, 116
Sprache:
Englisch
Schlagwort(e):
Forschungsbericht
URL:
https://hdl.handle.net/11681/11903
