Development of a Gradiometer for Measuring Gravity Gradients under Dynamic Conditions

Abstract

Design and development of a portable rotating gravitational gradiometer has been continued. A breadboard laboratory model of the gradiometer was constructed and tested. Testing has indicated that angular rate isolation and spin speed control represent major factors in maintaining noise free sensor operation. Analysis has been performed on the sensor's succeptability to angular rate and a feasible rate isolation method is outlined. Preliminary design studies for an isoelastic servo-balanced arm have been completed and are discussed. A preliminary design specification for an appropriate inertial platform for use in an airborne application was generated, and vendor liaison was established to obtain initial response to this specification. Studies were also performed on sensor angular position errors, noise and clutter due to proximate masses, and first stage vibration isolation methods.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1970
Accession Number
AD0721742

Entities

People

  • Charles B. Ames
  • Curtis C. Bell
  • Glenn F. Kloiber
  • Robert L. Forward
  • Robert W. Peterson

Organizations

  • HRL Laboratories

Tags

Communities of Interest

  • Sensors

DTIC Thesaurus Topics

  • Aircrafts
  • Angular Acceleration
  • Control Systems
  • Coordinate Systems
  • Elastic Properties
  • Gas Bearings
  • Inertial Navigation
  • Inertial Navigation Systems
  • Measurement
  • Measuring Instruments
  • Mechanics
  • Modulus Of Elasticity
  • Navigation
  • Resonant Frequency
  • Stabilization Systems
  • Stabilized Platforms
  • Vibration

Readers

  • Control Systems Engineering.
  • Inertial Navigation Systems.
  • Systems Analysis and Design