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WorksheetsPrinciples of Flight
Total questions: 14
Worksheet time: 15mins
As angle of attack increases
lift decreases and induced drag decreases
lift decreases and induced drag increases
lift increases and induced drag decreases
lift increases and induced drag increases
Parasite drag can be decreased by
using flaps instead of spoilers
polishing aircraft surfaces
making wings shorter and thicker
increasing induced drag
The Wright Brothers understood that they'd have to find three solutions (objectives) to three problems. Stated simply those solutions were:
Yaw, Pitch, Drag
Lift, Control, Thrust
Weight, Drag, Thrust
Parasite Drag, Induced Drag, Total Drag
The function of this control surface is to
yaw around the vertical axis
pitch around the vertical axis
yaw around the lateral axis
roll around the lateral axis
The purpose of this control surface is to
roll around the horizontal axis
yaw around the horizontal axis
roll around the lateral axis
pitch around the lateral axis
The purpose of this control surface is to
yaw around the lateral axis
pitch around the lateral axis
roll around the horizontal axis
yaw around the vertical axis
Airflow over a wing produces pressure differences due to changes in the velocity of the air. This explanation of lift is described by
Bernoulli's Principle
Wright's Theorem
Wilbur's Predicate
Orville's Postulate
The diagram illustrates the Four Forces Of Flight. Forces that oppose each other are
Lift and Drag
Lift and Thrust
Drag and Weight
Thrust and Drag
This illustration is actually a clever variation on the more aerodynamically correct:
Angle Of Attack vs Chord Line
Four Forces Of Flight
Bernoulli's Principle
This model airplane displays a pronounced dihedral which functions to
improve stability by producing more lift on the lower wing
neutralize the lift produced by induced drag
decrease the yaw of the aircraft around the vertical axis
increase thrust to match increased parasite drag
As the angle between the chord line and the relative wind increases
angle of attack decreases, lift decreases, drag decreases
angle of attack increases, lift decreases, drag increases
angle of attack decreases, lift increases, drag decreases
angle of attack increases, lift increases, drag increases
The Wright Brothers used aluminum instead of cast iron for major engine components because
aluminum is lighter than cast iron
aluminum is stronger than cast iron
aluminum was in common use in automotive engines
each of the other answers is equally correct
The photo is of wing flaps
used to increase lift and decrease drag
which increase dihedral at the lateral axis
used to increase lift and increase drag
which increase airspeed at increased angles of attack
Extra Credit
In this photograph of the first flight
the aircraft is moving toward the camera, Wilbur is flying, and Orville is at the left wing tip
the aircraft is moving away from the camera, Orville is flying and Wilbur is at the right wing tip
the aircraft is moving toward the camera, Wilbur is flying, and Orville is operating the camera
