Advanced Portable Life Support System Fan Controller

Document Number: 981675

Date Published: July 1998

Author(s):
Siamak Nikbin - AlliedSignal Aerospace
Allen L. MacKnight - AlliedSignal Aerospace

Abstract:
Advanced space suit portable life support systems (PLSS) require high performance fans for the breathing gas ventilation system. AlliedSignal has developed a high-speed, air-bearing fan for this application. This work addresses the development of an advanced electronic controller to drive this fan.

Advances in space suit technology required an improved fan controller. The architecture of the controller was modified to enhance performance and facilitate testing in a space environment. These modifications were both physical and functional. To reduce the size of the controller, electrical, electronic and electromechanical (EEE) components were divided into two circuit cards, the housing was redesigned, test points and control knobs were removed, and a higher grade of EEE components were used in the development of the controller. These modifications improved the functional characteristics of the controller. The advanced controller consumes less power, accepts commands from a computer and/or stand alone box, operates within a wider range of input voltage, generates lower current ripple into the source. The above design features have improved the thermal design of the box.

File Size: 160K
Product Status: In Stock

See other papers presented at International Conference On Environmental Systems, July 1998, Danvers, MA, USA, Session: Portable Life Support Technology Development

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