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Aircraft Flight Dynamics Robert F Stengel Lecture16 Aircraft Control Devices and Systems

Aircraft Flight Dynamics Robert F. Stengel Lecture16 Aircraft Control Devices and Systems

Aircraft Flight Dynamics Robert F. Stengel Lecture16 Aircraft Control Devices and Systems

... Control& quot;•  Effect of control surface deflections on aircraft motions"–  Generation of control forces and rigid-body moments on the aircraft& quot;–  Rigid-body dynamics of the aircraft& quot; δE ... 767 Elevator Control System"Abzug & Larrabee, 2002!Boeing 777 Fly-By-Wire Control System" Aircraft Control Devices and SystemsRobert Stengel, Aircraft Flight Dynamics, MAE ... pitch"–  Normal load factor"–  Pitch-command/attitude-hold"–  Flight path angle"USAF F- 15 IFCS!Princeton Variable-Response Research Aircraft! USAF AFTI /F- 16!United Flight 232, DC-10
Sioux...
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Aircraft Flight Dynamics Robert F. Stengel Lecture8 Aircraft Equations of Motion  1

Aircraft Flight Dynamics Robert F. Stengel Lecture8 Aircraft Equations of Motion 1

... theorem"•  Model in Pro/ENGINEER, etc." Aircraft Equations of Motion - 1
 Robert Stengel, Aircraft Flight Dynamics, 
MAE 331, 2012"•  6 degrees of freedom"•  Angular kinematics"•  ... geometric shapes with uniform density"Moments and Products of Inertia"(Bedford & Fowler)"•  Construct aircraft moments and products of inertia from components using parallel-axis ... Measurement of Position in Alternative Frames - 1"•  Two reference frames of interest"–  I: Inertial frame (fixed to inertial space)"–  B: Body frame (fixed to body)"•  Differences...
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Aircraft Flight Dynamics Robert F. Stengel Lecture9 Aircraft Equations of Motion  2

Aircraft Flight Dynamics Robert F. Stengel Lecture9 Aircraft Equations of Motion 2

... sinγ!"###$%&&&Relationship of Inertial Axes to Velocity Axes" Aircraft Equations of Motion - 2
 Robert Stengel, Aircraft Flight Dynamics, MAE 331, 2012"•  Rotating frames of reference"•  ... Motionhttp://www.princeton.edu/ ~stengel/ FlightDynamics.html! FLIGHT - MATLAB Program"http://www.princeton.edu/ ~stengel/ FlightDynamics.html! FLIGHT - MATLAB Program"Relationship of Inertial Axes to ... center of mass"Alternative Frames of Reference"•  Orthonormal transformations connect all reference frames"Next Time:Linearization and Modes of MotionReading Flight Dynamics, ...
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Aircraft Flight Dynamics Robert F. Stengel Lecture1 Introduction to Flight Dynamics

Aircraft Flight Dynamics Robert F. Stengel Lecture1 Introduction to Flight Dynamics

... vehicles.! Understanding of aircraft equations of motion, configuration aerodynamics, and methods for analysis of linear and nonlinear systems. ! Appreciation of the historical context within which past aircraft ... only.!http://www.princeton.edu/ ~stengel/ MAE331.html!!  Dynamics & Control of Atmospheric Flight !  Configuration Aerodynamics!  Aircraft Performance!  Flight Testing and Flying Qualities!  Aviation HistoryDetails•  ... Locus Analysis of Parameter Variations!  Transfer Functions and Frequency Response !  Aircraft Control and Systems !  Flight Testing!  Advanced Problems in Longitudinal Dynamics !  Advanced...
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Aircraft Flight Dynamics Robert F. Stengel Lecture2 PointMass Dynamics and Aerodynamic  Thrust Forces

Aircraft Flight Dynamics Robert F. Stengel Lecture2 PointMass Dynamics and Aerodynamic Thrust Forces

... Frame"CXCYCZ⎡⎣⎢⎢⎢⎤⎦⎥⎥⎥B=axial force coefficientside force coefficientnormal force coefficient⎡⎣⎢⎢⎢⎤⎦⎥⎥⎥CDCYCL⎡⎣⎢⎢⎢⎤⎦⎥⎥⎥=drag coefficientside force coefficientlift coefficient⎡⎣⎢⎢⎢⎤⎦⎥⎥⎥•  ... =vxvyvz⎡⎣⎢⎢⎢⎢⎤⎦⎥⎥⎥⎥ F I= f x f y f z⎡⎣⎢⎢⎢⎢⎤⎦⎥⎥⎥⎥I= F gravity+ F aerodynamics+ F thrust⎡⎣⎤⎦IRate of change of position!Rate of change of velocity!Vector of combined forces!Equations ... Aerodynamic/Thrust Forces
 Robert Stengel, Aircraft Flight Dynamics, 
MAE 331, 2012!•  Properties of the Atmosphere"•  Frames of reference"•  Velocity and momentum"•  Newtons...
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Aircraft Flight Dynamics Robert F. Stengel Lecture3 Aviation History Mythology to 1990

Aircraft Flight Dynamics Robert F. Stengel Lecture3 Aviation History Mythology to 1990

... effects"•  Short-Takeoff -and- Landing (STOL) aircraft augment takeoff/landing lift in many ways, e.g.,"–  Full-span flaps"–  Deflected thrust"Grumman F8 F!Grumman F4 F!GB R1!CTo,CTV,CTδT,CLδTWorld ... compressibility effects on drag!•  Dramatic change in stability, control, and flying qualities!•  North American FJ-1 and FJ-4 Fury!•  Republic F- 84B Thunderbird and F- 8 4F Thunderstreak!•  Grumman F9 F-2 ... broken by licensing for war effort!•  Aircraft Design!–  Biplanes, a few mono- and triplanes!–  Design for practical functions!–  Multiple engines, larger aircraft! –  Aft tails!–  Increased...
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Aircraft Flight Dynamics Robert F. Stengel Lecture5 Configuration Aerodynamics  2.

Aircraft Flight Dynamics Robert F. Stengel Lecture5 Configuration Aerodynamics 2.

... Axes" f B=XBYBZB!"###$%&&&mB=LBMBNB!"###$%&&&Force Vector"Moment Vector" r × f =i j kx y z f x f y f z= yfz− zfy( )i + zfx− xfz( )j + xfy− yfx( )km =yfz− zfy( )zfx− xfz( )xfy− yfx( )#$%%%%&'((((=rf ... Dihedral effect"•  Vertical tail effect"Rolling Moment due to Sideslip Angle!•  Crossflow effects depend on vertical location of the wing"Example of Configuration and Flap Effects!NACA ... =Surface∫LBMBNB"#$$$%&''' f B= f x f y f z!"####$%&&&&dx dy dzSurface∫=XBYBZB!"###$%&&&Configuration Aerodynamics - 2
 Robert Stengel, Aircraft Flight...
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Aircraft Flight Dynamics Robert F. Stengel Lecture6 Cruising Flight Performance

Aircraft Flight Dynamics Robert F. Stengel Lecture6 Cruising Flight Performance

... Cruising Flight Performance
 Robert Stengel, Aircraft Flight Dynamics, MAE 331, 2012!Copyright 2012 by Robert Stengel. All rights reserved. For educational use only.!http://www.princeton.edu/ ~stengel/ MAE331.html!http://www.princeton.edu/ ~stengel/ FlightDynamics.html!•  ... 0•  Satisfy necessary condition for a maximum"•  Lift-to-drag ratio"•  Lift coefficient for maximum L/D and minimum thrust are the same"Airspeed, Drag Coefficient, and Lift-to-Drag ... Flight Reading Flight Dynamics, 130-141, 147-155Virtual Textbook, Parts 6,7Subsonic Lift and Drag Coefficients"CL= CLo+ CLααCD= CDo+εCL2•  Lift coefficient"•  Drag coefficient"• ...
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Aircraft Flight Dynamics Robert F. Stengel Lecture7 Gliding, Climbing, and Turning Performance

Aircraft Flight Dynamics Robert F. Stengel Lecture7 Gliding, Climbing, and Turning Performance

... Glide"Climbing Flight Gliding, Climbing, and Turning Flight Performance
 Robert Stengel, Aircraft Flight Dynamics, MAE 331, 2012!Copyright 2012 by Robert Stengel. All rights reserved. For educational ... Flight Envelope Flight Envelope Determined by Available Thrust"•  Flight ceiling defined by available climb rate"–  Absolute: 0 ft/min"–  Service: 100 ft/min"–  Performance: ... stall"•  Flow-separation buffet"–  Angle of attack"–  Local shock waves"Piper Dakota Stall Buffet"http://www.youtube.com/watch?v=mCCjGAtbZ4g!Boeing 787 Flight Envelope...
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Aircraft Flight Dynamics Robert F. Stengel Lecture10 Linearized Equations and Modes of Motion

Aircraft Flight Dynamics Robert F. Stengel Lecture10 Linearized Equations and Modes of Motion

... ∂ψ∂ψ"#$$$$$$$%&'''''''•  Four (6 x 6) blocks distinguish longitudinal and lateral-directional effects " F = F Lon F Lat−DirLon F LonLat−Dir F Lat−Dir"#$$%&''Effects of longitudinal ... =GLonGLat−DirLonGLonLat−DirGLat−Dir"#$$%&''Effects of longitudinal controls on longitudinal motion"Effects of longitudinal controls on lateral-directional motion"Effects of lateral-directional controls on longitudinal ... Numerically"–  First differences in f( x,u,w)"•  Analytically"–  Symbolic evaluation of analytical models of F, G, and L" F( t ) =∂ f ∂xx =xN(t )u = uN(t )w = wN(t )G(t ) =∂ f ∂ux...
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