A light-weight multi-channel telemetering system
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Authors
Forter, Samuel Alexander
Subjects
Advisors
Date of Issue
1947-09
Date
September 1947
Publisher
Cambridge, Massachusetts; Massachusetts Institute of Technology
Language
en_US
Abstract
Current telemetering systems are too heavy and offer too few channels for successful application to the investigation of supersonic test vehicles. A study of the available systems indicates three factors which are uniformly insufficient. These factors are (1) the duplication of circuitry incident to the use of a separate amplifier for each channel; (2) inefficient methods of electronic commutation; (3) water of power by the continuous excitation of measuring bridges. A system is proposed which obviates these three points of inefficiency. A single amplifier for the whole system and a commutation scheme using a binary scaling circuit and a resistance matrix reduce the tube requirements for these two functions from 480 tubes to 45. Power is conserved by exciting the measuring bridges only during the time that information is desired from them. This process reduces the power requirements for bridge excitation from the power required for continuous excitation by a factor equal to the reciprocal of the number of channels. Following these principles, circuits were constructed which indicate that the proposed system seems entirely practical. Such a system should be lighter than any of the present ones and also capable of providing at least four times as many channels.
Type
Thesis
Description
This thesis document was issued under the authority of another institution, not NPS. At the time it was written, a copy was added to the NPS Library collection for reasons not now known. It has been included in the digital archive for its historical value to NPS. Not believed to be a CIVINS (Civilian Institutions) title.
Series/Report No
Department
Electrical Engineering
Organization
Massachusetts Institute of Technology