Accession Number:

AD0651104

Title:

FLUID STATE HYDRAULIC DAMPER

Descriptive Note:

Final rept., 1 Jul 1965-24 Jun 1966

Corporate Author:

HONEYWELL INC MINNEAPOLIS MN AERONAUTICAL DIV

Report Date:

1967-02-01

Pagination or Media Count:

180.0

Abstract:

The report covers the developmental work accomplished on a program to demonstrate the feasibility of using fluidic sensing amplification and signal shaping techniques to mechanize a single-axis, rate feedback damper system for VSTOL aircraft. The specific design goal was to increase the yaw axis damping ratio of the UH-1B helicopter from 0.30 unaugmented to 0.60 augmented. The control problem was analyzed and the damper system mechanization defined through the use of analog and digital computer simulation techniques. The component hardware was designed, fabricated, and bench tested. Closed-loop system bench testing, using an analog computer to simulate the UH-1B helicopter, showed that the fluidic damper system was feasible for helicopter control system mechanization. The addition of the damper system to the simulated aircraft raised the yaw axis damping ratio from 0.30 unaugmented to 0.60 augmented.

Subject Categories:

  • Flight Control and Instrumentation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE