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C. Inertial & Stabilization Products
Over the years USD has greatly enhanced the performance of the electro-mechanical gyroscope, allowing customers to improve and sustain their legacy and mature systems without radical redesign, re-engineering or re-qualification. USD provides cost effective form fit and funtion solutions for Honeywell, Condor and BAE gyroscopes. If you are looking for Rate Gyroscopes and Rate Integrating Gyroscopes send requirements to info@usdynamicscorp.com for review.
Brochures

      Inertial Products Overview
An overview of USD�s Inertial Products Division which includes gyroscopes for platform stabilization.
  
Specifications

      446 Series Rate Integrating Gyroscopes Specifications
A detailed catalog which includes performance specs, construction details, applications and a cross reference to National Stock Numbers (NSN), Honeywell GG1111 and BAE GIG6 gyros.
  
      475 Series Rate Gyroscopes Specifications
A detailed catalog which includes performance specs, construction details, applications and a cross reference to National Stock Numbers (NSN), Honeywell GG445, GN440 and BAE GIG5, GRG5 gyros.
  
      475T Series Rate Gyroscope Specifications
Packages our 475 rate gyros with all the necessary electronics for a stand alone package. The series is a form, fit, functional replacement for the RG-78 line of gyros.
  
      475P1 Rate Gyroscope
Performance Specifications for a 150 degree per second rate gyro with a scale factor of 35 millivolts per degree per second.
  
      475F1 Rate Gyroscope (NSN 6615-01-432-6690)
Performance Specifications for a 300 degree per second rate gyro with a scale factor of 20 millivolts per degree per second.
  
      475D11 Rate Gyroscope (NSN 6615-01-071-4292)
Performance Specifications for a 90 degree per second rate gyro with a scale factor of 75 millivolts per degree per second.
  
      2 Axis Rate Sensor Specifications
Performance Specifications and construction details for a high reliability 2-axis rate sensor that can be configured with various inputs and outputs.
  
Technical Papers

      Spinning Mass Mechanical Gyroscopes
This paper is an introduction to spinning mass mechanical gyroscopes. It discusses the history of gyroscopes, basic principles and the differences between Rate and Rate Integrating Gyroscopes.
  
      USD Model 475 Series Rate Gyroscope Technical Brief
This applications note discusses the USD 475 Rate Gyroscope. Included here is a brief discussion on rate gyroscope basics, operation, and uses, and a dissection of the model by major component. This applications note is primarily intended to familiarize the reader to the basic rate gyroscope functionality.
  
      US Dynamics Rate Gyroscope Interface Brief
This applications note discusses in brief, the typical input signals to and output signals from a USD miniature spinning mass Rate Gyroscope. The aim of this note is to give system designers and engineers some basic insight as to how to plan for the design and implementation of the necessary rate gyroscope operation support functions.
  
      Basic Gyroscope Spin Motor Excitation Requirements For USD Gyroscopes
This applications note discusses basic gyroscope spin motor excitation requirements for many models of USD Rate Integrating Gyroscopes (RIG) and Rate Gyroscopes. Most USD gyroscopes utilize 2 phase synchronous (hysteresis) motors to drive the gyroscope inertia wheel. The aim of this note is to introduce system designers and engineers to the basics of 2 phase synchronous induction hysteresis motors used in gyroscopes along with the motor drive excitation requirements. In addition, basic circuitry for the excitation of the 2 phase synchronous spin motors will also be discussed. The reader can then expand on the information presented here as applicable to their specific application.
  
      Basic Output Generator Excitation and Demodulation Requirements for USD Gyroscopes
This applications note discusses the input signal excitation and output signal conditioning (demodulation) requirements of the transformer type output generator, or pickoff used on the USD Rate Integrating Gyroscopes (RIG) and Rate Gyroscopes. In addition, basic transformer type pickoff operation will be presented. The discussions and circuit examples provided in this note are intended to introduce system designers and engineers to the minimum basic requirements for gyroscope pickoff excitation and demodulation.
  
      The Concept of �Rate� (more particularly, angular rate pertaining to rate gyroscopes)
This applications note discusses in brief, the concept of rate, in particular angular rate, as it pertains to gyroscopes and the measurement of angular velocity, or the rate-of-turn, along with how the data can be used. This applications note is primarily intended to familiarize the reader to the basic concepts relating to the rate gyroscope.
  
      The Rate Intergrating Gyroscope (RIG), Part 1
This applications note discusses the operations of the USD Rate Integrating Gyroscope. It also describes how this type of gyro can be modelled as a simple analog device.