Flight Determined Subsonic Lateral Directional Stability And Control Derivatives Of The Thrust Vectoring F 18 High Angle Of Attack Research Vehicle

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Flight Determined Subsonic Lateral Directional Stability And Control Derivatives Of The Thrust Vectoring F 18 High Angle Of Attack Research Vehicle Harv And Comparisons To The Basic F 18 And Predicted Derivatives

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Author : Kenneth W. Iliff
language : en
Publisher:
Release Date : 1999

Flight Determined Subsonic Lateral Directional Stability And Control Derivatives Of The Thrust Vectoring F 18 High Angle Of Attack Research Vehicle Harv And Comparisons To The Basic F 18 And Predicted Derivatives written by Kenneth W. Iliff and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Aerodynamics categories.

Flight Determined Subsonic Longitudinal Stability And Control Derivatives Of The F 18 High Angle Of Attack Research Vehicle Harv With Thrust Vectoring

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Author : Kenneth W. Iliff
language : en
Publisher:
Release Date : 1997

Flight Determined Subsonic Longitudinal Stability And Control Derivatives Of The F 18 High Angle Of Attack Research Vehicle Harv With Thrust Vectoring written by Kenneth W. Iliff and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Aerodynamics categories.

Monthly Catalog Of United States Government Publications

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Author :
language : en
Publisher:
Release Date : 2000

Monthly Catalog Of United States Government Publications written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Government publications categories.

Flight Determined Subsonic Lateral Directional Stability And Control Derivatives Of The Thrust Vectoring F 18 High Angle Of Attack Research Vehicle

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Author : National Aeronautics and Space Adm Nasa
language : en
Publisher: Independently Published
Release Date : 2018-09-23

Flight Determined Subsonic Lateral Directional Stability And Control Derivatives Of The Thrust Vectoring F 18 High Angle Of Attack Research Vehicle written by National Aeronautics and Space Adm Nasa and has been published by Independently Published this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-09-23 with Science categories.

The subsonic, lateral-directional, stability and control derivatives of the thrust-vectoring F-1 8 High Angle of Attack Research Vehicle (HARV) are extracted from flight data using a maximum likelihood parameter identification technique. State noise is accounted for in the identification formulation and is used to model the uncommanded forcing functions caused by unsteady aerodynamics. Preprogrammed maneuvers provided independent control surface inputs, eliminating problems of identifiability related to correlations between the aircraft controls and states. The HARV derivatives are plotted as functions of angles of attack between 10deg and 70deg and compared to flight estimates from the basic F-18 aircraft and to predictions from ground and wind tunnel tests. Unlike maneuvers of the basic F-18 aircraft, the HARV maneuvers were very precise and repeatable, resulting in tightly clustered estimates with small uncertainty levels. Significant differences were found between flight and prediction; however, some of these differences may be attributed to differences in the range of sideslip or input amplitude over which a given derivative was evaluated, and to differences between the HARV external configuration and that of the basic F-18 aircraft, upon which most of the prediction was based. Some HARV derivative fairings have been adjusted using basic F-18 derivatives (with low uncertainties) to help account for differences in variable ranges and the lack of HARV maneuvers at certain angles of attack.Iliff, Kenneth W. and Wang, Kon-Sheng CharlesArmstrong Flight Research CenterF-18 AIRCRAFT; ANGLE OF ATTACK; MAXIMUM LIKELIHOOD ESTIMATES; DIRECTIONAL STABILITY; CONTROL SURFACES; AIRCRAFT CONTROL; WIND TUNNEL TESTS; PARAMETER IDENTIFICATION; LATERAL STABILITY

Flight Determined Subsonic Lateral Directional Stability And Control Derivatives Of The Thrust Vectoring F 18 High Angle Of Attack Research Vehicle Harv And Comparisons To The Basic F 18 And Predicted Derivatives

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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-05-31

Flight Determined Subsonic Lateral Directional Stability And Control Derivatives Of The Thrust Vectoring F 18 High Angle Of Attack Research Vehicle Harv And Comparisons To The Basic F 18 And Predicted Derivatives written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-05-31 with categories.

The subsonic, lateral-directional, stability and control derivatives of the thrust-vectoring F-1 8 High Angle of Attack Research Vehicle (HARV) are extracted from flight data using a maximum likelihood parameter identification technique. State noise is accounted for in the identification formulation and is used to model the uncommanded forcing functions caused by unsteady aerodynamics. Preprogrammed maneuvers provided independent control surface inputs, eliminating problems of identifiability related to correlations between the aircraft controls and states. The HARV derivatives are plotted as functions of angles of attack between 10deg and 70deg and compared to flight estimates from the basic F-18 aircraft and to predictions from ground and wind tunnel tests. Unlike maneuvers of the basic F-18 aircraft, the HARV maneuvers were very precise and repeatable, resulting in tightly clustered estimates with small uncertainty levels. Significant differences were found between flight and prediction; however, some of these differences may be attributed to differences in the range of sideslip or input amplitude over which a given derivative was evaluated, and to differences between the HARV external configuration and that of the basic F-18 aircraft, upon which most of the prediction was based. Some HARV derivative fairings have been adjusted using basic F-18 derivatives (with low uncertainties) to help account for differences in variable ranges and the lack of HARV maneuvers at certain angles of attack.Iliff, Kenneth W. and Wang, Kon-Sheng CharlesArmstrong Flight Research CenterF-18 AIRCRAFT; ANGLE OF ATTACK; MAXIMUM LIKELIHOOD ESTIMATES; DIRECTIONAL STABILITY; CONTROL SURFACES; AIRCRAFT CONTROL; WIND TUNNEL TESTS; PARAMETER IDENTIFICATION; LATERAL STABILITY

Research Engineering

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Author :
language : en
Publisher:
Release Date : 2000

Research Engineering written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with categories.

Scientific And Technical Aerospace Reports

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Author :
language : en
Publisher:
Release Date : 1994

Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Aeronautics categories.

Nasa Sp

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Author :
language : en
Publisher:
Release Date : 1992

Nasa Sp written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Aeronautics categories.

Aeronautical Engineering

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Author :
language : en
Publisher:
Release Date : 1992

Aeronautical Engineering written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Aeronautics categories.

A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA).

Aeronautical Engineering 1983 Cumulative Index

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Author :
language : en
Publisher:
Release Date : 1984

Aeronautical Engineering 1983 Cumulative Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with categories.