Accession Number:

ADA059188

Title:

Investigation of a Low-Cost Servoactuator for HYSAS

Descriptive Note:

Final rept. Apr 1977-Mar 1978

Corporate Author:

HONEYWELL INC ST LOUIS PARK MN AVIONICS DIV

Personal Author(s):

Report Date:

1978-07-01

Pagination or Media Count:

88.0

Abstract:

This document covers the design and testing of a fluidic input servoactuator to perform the series servoactuator function in a helicopter hydrofluidic stability augmentation system HYSAS. The servoactuator consists of a two-stage fluidic amplifier cascade driving a conventional spool valve that positions a spring-centered cylinder. Simplicity and minimum cost commensurate with essential servoactuator performance was the design goal. A breadboard model servoactuator was designed, fabricated, and bench tested to evaluate feasibility. Servoactuator performance objectives were met at nominal supply conditions, but not over the complete operational oil temperature range.

Subject Categories:

  • Helicopters
  • Machinery and Tools

Distribution Statement:

APPROVED FOR PUBLIC RELEASE