F-18 High Alpha Research Vehicle (Harv) Parameter Identification Flight Test Maneuvers for Optimal Input Design Validation and Lateral Control Effectiveness
F-18 High Alpha Research Vehicle (Harv) Parameter Identification Flight Test Maneuvers for Optimal Input Design Validation and Lateral Control Effectiveness

Author: National Aeronautics and Space Administration (NASA)

Publisher: Createspace Independent Publishing Platform

Published: 2018-07-03

Total Pages: 48

ISBN-13: 9781722226800

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Flight test maneuvers are specified for the F-18 High Alpha Research Vehicle (HARV). The maneuvers were designed for open loop parameter identification purposes, specifically for optimal input design validation at 5 degrees angle of attack, identification of individual strake effectiveness at 40 and 50 degrees angle of attack, and study of lateral dynamics and lateral control effectiveness at 40 and 50 degrees angle of attack. Each maneuver is to be realized by applying square wave inputs to specific control effectors using the On-Board Excitation System (OBES). Maneuver descriptions and complete specifications of the time/amplitude points define each input are included, along with plots of the input time histories. Morelli, Eugene A. Unspecified Center NAS1-19000; RTOP 505-64-52-01...

The F-18 High Alpha Research Vehicle (HARV) Parameter Identification Flight Test Maneuvers for Optimal Input Design Validation and Lateral Control
The F-18 High Alpha Research Vehicle (HARV) Parameter Identification Flight Test Maneuvers for Optimal Input Design Validation and Lateral Control

Author: Eugene A. Morelli

Publisher:

Published: 1995

Total Pages: 54

ISBN-13:

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Flight tests maneuvers are specified for the F-18 Alpha Research Vehicle (HARV). The maneuvers were designed for open loop parameter identification purposes, specifically for optimal input design validation at 5 degrees angle of attack, identification of individual strake effectiveness at 40 and 50 degrees angle of attack, and study of lateral dynamics and lateral control effectiveness at 40 and 50 degrees angle of attack. Each maneuver is to be realized by applying square wave inputs to specific control effectors using the On-Board Excitation System (OBES). Maneuver descriptions and complete specifications of the time/amplitude points defining each input are included, along with plots of the input time histories.

Performance Validation of Version 152.0 ANSER Control Laws for the F-18 HARV
Performance Validation of Version 152.0 ANSER Control Laws for the F-18 HARV

Author: Michael D. Messina

Publisher:

Published: 1996

Total Pages: 176

ISBN-13:

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The Actuated Nose Strakes for Enhanced Rolling (ANSER) Control Laws were modified as a result of Phase 3 F/A-18 High Alpha Research Vehicle (HARV) flight testing. The control law modifications for the next software release were designated version 152.0. The Ada implementation was tested in the Hardware-In-the-Loop (HIL) simulation and results were compared to those obtained with the NASA Langley batch Fortran implementation of the control laws which are considered the 'truth model.' This report documents the performance validation test results between these implementations for ANSER control law version 152.0.

Flight Test Maneuvers for Closed Loop Lateral-directional Modeling of the F-18 High Alpha Research Vehicle (HARV) Using Forebody Strakes
Flight Test Maneuvers for Closed Loop Lateral-directional Modeling of the F-18 High Alpha Research Vehicle (HARV) Using Forebody Strakes

Author: E. A. Morelli

Publisher:

Published: 1996

Total Pages: 28

ISBN-13:

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Flight test maneuvers are specified for the F-18 High Alpha Research Vehicle (HARV). The maneuvers were designed for closed loop parameter identification purposes, specifically for lateral linear model parameter estimation at 30, 45, and 60 degrees angle of attack, using the Actuated Nose Strakes for Enhanced Rolling (ANSER) control law in Strake (S) model and Strake/Thrust Vectoring (STV) mode. Each maneuver is to be realized by applying square wave inputs to specific pilot station controls using the On-Board Excitation System (OBES). Maneuver descriptions and complete specification of the time/amplitude points defining each input are included, along with plots of the input time histories.

NASA Langley Scientific and Technical Information Output, 1995
NASA Langley Scientific and Technical Information Output, 1995

Author:

Publisher:

Published: 1996

Total Pages: 172

ISBN-13:

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This document is a compilation of the scientific and technical information that the Langley Research Center has produced during the calendar year 1995. Included are citations for formal reports, high-numbered conference publications, high-numbered technical memorandums, contractor reports, journal articles and other publications, meeting presentations, technical talks, computer programs, tech briefs, and patents.