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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

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

... Construct aircraft moments and products of inertia from components using parallel-axis theorem"•  Model in Pro/ENGINEER, etc." Aircraft Equations of Motion - 1 Robert Stengel, Aircraft ... of inertia, Ixz"North American XB-70!Nominal ConfigurationTips folded, 50% fuel, W = 38,524 lbxcm@0. 218 cIxx= 1. 8 10 6 slug-ft2Iyy= 19 .9 10 6 slug-ft2Ixx= 22 .1 10 6 ... Equations of Motion? "dx(t )dt= f x(t),u(t),w(t ),p(t),t[ ]dx(t )dt= F x(t ) + G u(t) + L w(t)Translational PositionCartesian Frames of Reference"•  Two reference frames of...
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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 3 31, 2 012 "•  Rotating frames of reference"•  Combined equations ... )•  Rate of change of Translational Velocity "•  Rate of change of Angular Velocity "Mirror symmetry, Ixz ≠ 0# FLIGHT - Computer Program to Solve the 6-DOF Equations of Motion http://www.princeton.edu/ ~stengel/ FlightDynamics.html! FLIGHT ... IB 1 MB−ωBIBωB( )•  Rate of change of Translational Position "•  Rate of change of Rotation Matrix "•  Rate of change of Translational Velocity "•  Rate of change of Angular Velocity...
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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

... a23a 31 ( )a 11 a33− a 13 a 31 ( )− a 11 a23− a 13 a 21 ( )a 21 a32− a22a 31 ( )− a 11 a32− a 12 a 31 ( )a 11 a22− a 12 a 21 ( )!"####$%&&&&a 11 a22a33+ ... 0,t f !"$%!  Analytical evaluation of partial derivatives"∂ f 1 ∂x 1 = 0;∂ f 1 ∂x2= 1f 2∂x 1 = 10 − 30x 1 N2(t);∂ f 2∂x2= 1f 1 ∂u= 0;∂ f 1 ∂w= 0∂ f 2∂u= ... the entire system " F( t) =∂ f 1 ∂x 1f 1 ∂x2 ∂ f 1 ∂x 12f 2∂x 1f 2∂x2 ∂ f 2∂x 12f 12 ∂x 1f 12 ∂x2 ∂ f 12 ∂x 12 "#$$$$$$$$%&''''''''=∂u∂u∂u∂w...
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Aircraft Flight Dynamics Robert F. Stengel Lecture14 RootLocus Analysis of Parameter Variations

Aircraft Flight Dynamics Robert F. Stengel Lecture14 RootLocus Analysis of Parameter Variations

... ratio"Root Locus Analysis of Parameter Variations
 Robert Stengel, Aircraft Flight Dynamics MAE 3 31, 2 012 "•  Effects of system parameter variations on modes of motion& quot;•  Root locus ... −λ 1 ( )s −λ 1 *( )= s −µ 1 + jν 1 ( )$%&'s −µ 1 − jν 1 ( )$%&'= s2−µ 1 − jν 1 ( )+µ 1 + jν 1 ( )$%&'s +µ 1 − jν 1 ( )µ 1 + jν 1 ( ... Variation in aircraft aerodynamic configuration"–  Effect of feedback control, i.e., control of pitching moment (via elevator) that is proportional to pitch rate"Effect of Parameter...
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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

... 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 ... selected angles of attack"•  Effectiveness of low mounting is unaffected by wing wake at high angle of attack"•  Effectiveness of high-mounted elevator is unaffected by wing wake ... +ωnSP2= 1 !  # of roots = 2"!  # of zeros = 1! !  Destinations of roots (for k = ±∞):"!  1 root goes to zero of n(s)"!  1 root goes to infinite radius"!  Angles of asymptotes,...
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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

... Velocity"Normal "Velocity"Phases of Flight& quot; Flight of a Paper Airplane Flight of a Paper Airplane
Example 1. 3 -1, Flight Dynamics& quot;•  Red: Equilibrium flight path"•  ... Aerodynamics of Airplane Configurations!  Cruising Flight Performance!  Gliding, Climbing, and Turning Performance!  Nonlinear, 6-DOF Equations of Motion !  Linearized Equations of Motion !  ... 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...
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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

... F aerodynamics+ F thrust⎡⎣⎤⎦IRate of change of position!Rate of change of velocity!Vector of combined forces! Equations of Motion for a Point Mass " ˙ x (t) =dx(t)dt= f[ x(t) ,F] •  ... Frame"CXCYCZ⎡⎣⎢⎢⎢⎤⎦⎥⎥⎥B=axial force coefficientside force coefficientnormal force coefficient⎡⎣⎢⎢⎢⎤⎦⎥⎥⎥CDCYCL⎡⎣⎢⎢⎢⎤⎦⎥⎥⎥=drag coefficientside force coefficientlift coefficient⎡⎣⎢⎢⎢⎤⎦⎥⎥⎥•  ... "–  The ratio of force to acceleration is the mass of the particle: F = m a"∴dvdt= 1 m F = 1 mI3 F = 1 / m 0 00 1 / m 00 0 1 / m⎡⎣⎢⎢⎢⎤⎦⎥⎥⎥ f x f y f z⎡⎣⎢⎢⎢⎢⎤⎦⎥⎥⎥⎥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

... H. Bryan (18 64 -19 28)!–  Longitudinal equations of motion (with W.E. Williams, 19 03)!–  Full equations of motion and linearized equations (19 11) !Comfort and Elegance by the End of the Decade!•  ... Panther and F9 F-6 Cougar!Toward Supersonic Flight and StealthFighter Jets of the 19 50s!•  Emphasis on supersonic speed!Republic F- 10 5!Lockheed F- 10 4!Convair F- 10 2!McDonnell F- 10 1!North American ... attack!Northrop F- 5E!Grumman F- 14 !McDonnell-Douglas F/ A -18 !General Dynamics F- 16 !Republic A -10 !McDonnell-Douglas F- 15 !Commercial Jets of the 19 80s!•  Extensions of the 19 70s transports...
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Aircraft Flight Dynamics Robert F. Stengel Lecture5 Configuration Aerodynamics  2.

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

... 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 ... y z f x f y f z= yfz− zfy( )i + zfx− xfz( )j + xfy− yfx( )km =yfz− zfy( )zfx− xfz( )xfy− yfx( )#$%%%%&'((((=rf =0 −z yz 0 −x−y x 0#$%%%&'((( f x f y f z#$%%%%&'((((Incremental ... Compressibility effects"!  P- 51 example"!  Newtonian Flow"!  Moments"!  Effects of Sideslip Angle"Copyright 2 012 by Robert Stengel. All rights reserved. For educational...
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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 3 31, 2 012 !Copyright 2 012 by Robert Stengel. All rights reserved. For educational use only.!http://www.princeton.edu/ ~stengel/ MAE3 31. html!http://www.princeton.edu/ ~stengel/ FlightDynamics.html!•  ... Flight Reading Flight Dynamics, 13 0 -14 1, 14 7 -15 5Virtual Textbook, Parts 6,7Subsonic Lift and Drag Coefficients"CL= CLo+ CLααCD= CDo+εCL2•  Lift coefficient"•  Drag coefficient"•  ... = CT 1 2ρV3S ≈ independent of airspeedThrust = T = CT 1 2ρV2S ≈ independent of airspeed•  Throttle Effect"T = TmaxδT = CTmaxδTqS, 0 ≤δT ≤ 1 Typical Effects of Altitude...
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