A Differential Thrust Controller for Air Cushion Landing System Aircraft

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Abstract:

A control system was designed to improve the heading response of the Air Cushion Landing System aircraft to differential thrust input. The aircraft equations of motion and low speed stability derivatives were obtained from work done at the Air Force Flight Dynamics Laboratory at Wright-Patterson Air Force Base, Ohio. Five different values of engine response time-delay were selected for the design study. These time-delay values were 0.2, 0.4, 0.6, 0.8, and 1.0 seconds. The principle used for the design was to compensate the system ignoring the time-delay and then to compensate for the time-delay. A two stage lead network was used to reduce the effect of the engine time-delay. The system was simulated by using a digital computer program called MIMIC, which simulates the functions of an analog computer.

Author(s):
Husson, Matthew A.
Author Organization(s):
AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH SCHOOL OF ENGINEERING
Descriptive Note:
Master's thesis
Pagination:
0108

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
GE/EE/74-51
Monitor Series:
AFIT
 Subject Terms
Joint Capability Areas:
JCA_3.1_Maneuver; JCA_3_Force Application; JCA_3.1.1_Maneuver to Engage; JCA_3.1.2_Maneuver to Insert; JCA_5_Command and Control; JCA_1_Force Support; JCA_1.2_Force Preparation; JCA_5.5.2_Task; JCA_5.5_Direct; JCA_6_Net Centric; JCA_1.2.1_Training; JCA_5.3_Planning; JCA_6.1.2_Wireless Transmission; JCA_6.1.3_Switching and Routing; JCA_1.3_Human Capital Management; JCA_6.1_Information Transport; JCA_1.3.2_Personnel Management; JCA_6.4.1_Secure Information Exchange; JCA_1.2.5_Lessons Learned; JCA_1.4.2_Health Service Delivery; JCA_1.4_Force Support
Modernization Areas:
Fully Networked C3
Communities of Interest:
Air Platforms
Descriptor(s):
*AIRCRAFT, *LANDING GEAR, *AIR CUSHION VEHICLES, CONTROL SYSTEMS, THESES, FEEDBACK, THRUST CONTROL, DIGITAL SIMULATION, CLOSED LOOP SYSTEMS, CONTROL JETS
Field(s)/Group(s):
Surface Effect Vehicles and Amphibious Vehicles
Keyword(s):
*AIR CUSHION LANDING SYSTEMS
Report Date:
1974 Dec 01