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This is part of the internal resonant component of a Hemispherical Resonator Gyro (HRG). It generates an electrical field that causes the cup-shaped resonator to vibrate at a specific frequency. An HRG senses acceleration by the change in phase of vibration of a cup-shaped resonator, similar to the way a wine-glass resonates when rubbed by a wet finger. The device is rugged and accurate, and it has replaced other models of mechanical gyroscopes on most deep-space missions, as well asn other applications.

Northrop Grumman donated this to the Museum in 2011.

Display Status

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.

Object Details

Country of Origin

United States of America

Type

SPACECRAFT-Uncrewed-Guidance & Control

Manufacturer

Northrop Grumman Guidance and Electronics Company, INC.

Dimensions

Approx. 1 3/4" diameter, 3/4" thick

Materials

Metal and ceramic.

Inventory Number

A20110026002

Credit Line

Gift of Northrop Grumman.

Data Source

National Air and Space Museum

Restrictions & Rights

Usage conditions apply
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