ClipArt ETC
An illustration of the plane's centers of gravity, lift drift and thrust to effectively glide the plane when the engine stalls.

Centre of Gravity Lift Drift Thrust of Aeroplane

An illustration of the plane's centers of gravity, lift drift and thrust to effectively glide the plane…

A dihedral board on an aeroplane, or airplane, for stability. The boards are raised on short legs over the ribs with a spirit level on top of the board. Dihedral boards are used as a last result due to inaccuracy in stability.

Dihedral Board Aeroplane

A dihedral board on an aeroplane, or airplane, for stability. The boards are raised on short legs over…

A Dunne aeroplane, or airplane, design. the V shape plane stabilizes by having a V shaped depression in the middle and wing tips. This design is impractical due to the materials must be strengthen, creating more weight.

Dunne Aeroplane

A Dunne aeroplane, or airplane, design. the V shape plane stabilizes by having a V shaped depression…

"As the bottom of the surface meets the air, it compresses it and accelerates it downwards. As a result of this definite action there is an equal and opposite reaction upwards." —Barber, 1917

Aerodynamic of Airplane Wing

"As the bottom of the surface meets the air, it compresses it and accelerates it downwards. As a result…

A diagram illustrating the airplane's angle of incidence at axis A, direction of motion and thrust.

Plane Angle of Incidence

A diagram illustrating the airplane's angle of incidence at axis A, direction of motion and thrust.

The diagram illustrating the plane's angle of incidence pointing down at the motion axis. The plan will exert momentum and thrust force from angle of incidence.

Plane Pointing Down Angle of Incidence

The diagram illustrating the plane's angle of incidence pointing down at the motion axis. The plan will…

Illustration of a dihedral angle bisected by a plane. "Every point in a plane which bisects a dihedral angle is equidistant from the faces of the angle."

Dihedral Angle With Bisector

Illustration of a dihedral angle bisected by a plane. "Every point in a plane which bisects a dihedral…

Illustration of a convex polyhedral angle. "The sum of the face angles of any convex polyhedral angle is less than four right angles."

Convex Polyhedral Angle

Illustration of a convex polyhedral angle. "The sum of the face angles of any convex polyhedral angle…

Illustration of dihedral angle AB (or M-AB-N) formed by planes.

Dihedral Angle

Illustration of dihedral angle AB (or M-AB-N) formed by planes.

Illustration of dihedral angle AB formed by planes.

Dihedral Angle

Illustration of dihedral angle AB formed by planes.

Illustration of polyhedral angle. "The opening of three or more planes which meet at a common point is called a polyhedral angle."

Polyhedral Angle

Illustration of polyhedral angle. "The opening of three or more planes which meet at a common point…

Trihedral angle. "The sum of any two face angles of a trihedral angle is greater than the third face angle."

Trihedral Angle

Trihedral angle. "The sum of any two face angles of a trihedral angle is greater than the third face…

Illustration of adjacent dihedral angles M-AB-N and P-AM-N made by planes.

Adjacent Dihedral Angle

Illustration of adjacent dihedral angles M-AB-N and P-AM-N made by planes.

Illustration of 2 equal dihedral angles.

Two Equal Dihedral Angles

Illustration of 2 equal dihedral angles.

Illustration of 3 equal dihedral angles. "Two dihedral angles have the same ratio as their plane angles."

Equal Dihedral Angles

Illustration of 3 equal dihedral angles. "Two dihedral angles have the same ratio as their plane angles."

Illustration of two polyhedral angles that are equal.

Equal Polyhedral Angles

Illustration of two polyhedral angles that are equal.

Illustration used to show that two trihedral angles are equal or symmetrical when the three face angles of the one are respectively equal to the three face angles of the other.

Equal trihedral angles

Illustration used to show that two trihedral angles are equal or symmetrical when the three face angles…

Illustration of two symmetrical polyhedral angles.

Symmetrical Polyhedral Angles

Illustration of two symmetrical polyhedral angles.

Illustration of two vertical dihedral angles.

Vertical Dihedral Angles

Illustration of two vertical dihedral angles.

A pilot's cockpit from a propeller aeroplane, or airplane. The diagram illustrates the different parts of the cockpit used to control the plane. The cockpit contains gauges; watch; joystick controlling ailerons and elevators; and wires to adjust wings.

Aeroplane Cockpit

A pilot's cockpit from a propeller aeroplane, or airplane. The diagram illustrates the different parts…

Illustration showing the intersection of a plane with a cone.

Intersection Of A Plane And Cone

Illustration showing the intersection of a plane with a cone.

Illustration showing the intersection of a plane with a cone. The solid is shown in perspective and the triangles that are to be located in the projections are represented in the drawing.

Intersection Of A Plane And Cone

Illustration showing the intersection of a plane with a cone. The solid is shown in perspective and…

Illustration of the intersection of a cone and a plane.

Intersection of a Cone and a Plane

Illustration of the intersection of a cone and a plane.

Illustration of a plane tangent to a cone which contains one element of the cone but does not cut the surface.

Tangent Plane to a Cone

Illustration of a plane tangent to a cone which contains one element of the cone but does not cut the…

Diagram of a cone with spheres and cut by a plane to depict the conic sections.

Cone depicting Conic Sections

Diagram of a cone with spheres and cut by a plane to depict the conic sections.

Diagram of a cone with inscribed spheres and cut by various planes to depict the conic sections: circle, ellipse.

Cone depicting Conic Sections

Diagram of a cone with inscribed spheres and cut by various planes to depict the conic sections: circle,…

Illustration showing the intersection of a plane with a cylinder.

Plane Intersecting Cylinder

Illustration showing the intersection of a plane with a cylinder.

A design of the propeller airplane, or aeroplane, in flight with a higher tail to create an angle of incidence when landing.

Aeroplane High Tail Normal Attitude Design

A design of the propeller airplane, or aeroplane, in flight with a higher tail to create an angle of…

A propeller airplane, or aeroplane, design with a high tail. This design creates a larger angle of incidence for a effective air brake to stop the plane in a shorter distance.

Aeroplane High Tail Slow Landing Design

A propeller airplane, or aeroplane, design with a high tail. This design creates a larger angle of incidence…

Illustration of a propeller aeroplane, or airplane, with lower tail in flight.

Aeroplane Low Tail Design

Illustration of a propeller aeroplane, or airplane, with lower tail in flight.

The propeller airplane, or aeroplane, design in fast landing. This design requires a large landing area to stop the plane.

Aeroplane Low Tail Fast Landing Design

The propeller airplane, or aeroplane, design in fast landing. This design requires a large landing area…

A motion diagram of the aeroplane, or airplane, illustrating the plane's direction to create thrust and small angle of incidence relative to the horizontal line.

Aeroplane Motion Diagram

A motion diagram of the aeroplane, or airplane, illustrating the plane's direction to create thrust…

A diagram of wing airplane illustrating the skeleton. The shape of the wing creates a lift—draft ratio to create drift.

Airplane Wing Diagram

A diagram of wing airplane illustrating the skeleton. The shape of the wing creates a lift—draft…

An airplane wing free body diagram illustrating forces acting on the wing.

Airplane Wing Free Body Diagram

An airplane wing free body diagram illustrating forces acting on the wing.

An illustration of stabilizing the plane by setting the back wing at less angle of incidence than the front main wings creating a dihedral angle.

Stabilizing Aeroplane using Dihedral Angle

An illustration of stabilizing the plane by setting the back wing at less angle of incidence than the…

A propellor engine illustrating of the motion of the propellor when in flight.

Aeroplane Engine

A propellor engine illustrating of the motion of the propellor when in flight.

The illustration shows the airplane's fin, or keel surface. The fin of the airplane is located on the tail to create an efficient vertical turning.

Airplane Fin

The illustration shows the airplane's fin, or keel surface. The fin of the airplane is located on the…

A flashcard featuring an illustration of a Plane

Flashcard of a Plane

A flashcard featuring an illustration of a Plane

A plane flying above land illustrating the use of ailerons to adjust the angle of incidence to adjust the lift. Ailerons are located at the wing tips and controlled by the pilot.

Airplane Flying Above Land

A plane flying above land illustrating the use of ailerons to adjust the angle of incidence to adjust…

An airplane flying above the show illustrating the aerodynamics of the plane with the tail wing at the same angle as the main body. This reduces the lift of the plane by decreasing the angle of incidence.

Airplane Flying Above Shore

An airplane flying above the show illustrating the aerodynamics of the plane with the tail wing at the…

An illustration of the plane flying over land from point A to B by flying the plane with the direction of the plane. Then, flying to point D by creating a diagonal line at 100 mph onto destination point B.

Aeroplane Flying Over Plane

An illustration of the plane flying over land from point A to B by flying the plane with the direction…

The diagram illustrating an approximate angle of flying an aeroplane, or airplane, flying upside down and in a loop by adjusting the throttle of the engine.

Aeroplane Looping and Upside Down Flying

The diagram illustrating an approximate angle of flying an aeroplane, or airplane, flying upside down…

The illustration of the plane descending while spiraling down. The radius of the spiral spin is getting smaller. A nose spin drive happens when the pilot intentionally or unintentionally stalls the plane and control the plane side to side in air.

Aeroplane Nose Spin Dive Flying

The illustration of the plane descending while spiraling down. The radius of the spiral spin is getting…

Airplane flying almost sideway, called sideslip. The plane enters sideslip by lowering the wing and rudder while increasing speed.

Airplane Sideslip Flying

Airplane flying almost sideway, called sideslip. The plane enters sideslip by lowering the wing and…

An illustration of the plane recovered from sideslipping in air.

Airplane Sideslip Recovery Flying

An illustration of the plane recovered from sideslipping in air.

A sideslip of the plane with the rudder turned left so that the plane flying sideways with the nose pointing down.

Airplane Sideslip Rudder Turned Flying

A sideslip of the plane with the rudder turned left so that the plane flying sideways with the nose…

The airplane is flying with the elevator depressed and rudder turned to recover the plane to the upright position.

Airplane Sideslip Rudder Turned and Elevator Depressing Flying

The airplane is flying with the elevator depressed and rudder turned to recover the plane to the upright…

The illustration of the plane creating wash in and washout to reduce the lift distribution across the wing span.

Airplane Wash In and Out Flying

The illustration of the plane creating wash in and washout to reduce the lift distribution across the…

"The distance of A and B below H is indicated on the V projection. Thus if to A∧h B∧h the perpendiculars A∧h A;and;r and B∧h B∧r be drawn, A∧r B∧r will be the true length of A B." —French, 1911

Construction of Geometric Revolution

"The distance of A and B below H is indicated on the V projection. Thus if to A∧h B∧h the perpendiculars…

"The H projection of the line AB in the space is a line connecting the feet of all the perpendiculars from AB to the plane. These perpendiculars form what is known as the projecting plane. If this projecting plane to be revolved about its H trace, which is the H projection of the line, until it coincides with H, the line will be seen in its true length." —French, 1911

Revolutions into the Plane of Geometric Shapes

"The H projection of the line AB in the space is a line connecting the feet of all the perpendiculars…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with some increments from -10 To 10 labeled.

-10 To 10 Coordinate Grid With Increments Labeled By 10s

Illustration of an xy grid/graph. It is the Cartesian coordinate system with some increments from -10…

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with some increments from -10 To 10 labeled.

-10 To 10 Coordinate Grid With Increments Labeled By 10s And Grid Lines Shown

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with some…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with the x- and y-axes and even increments from -10 to 10 labeled.

-10 To 10 Coordinate Grid With Axes And Even Increments Labeled

Illustration of an xy grid/graph. It is the Cartesian coordinate system with the x- and y-axes and even…

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with the x- and y-axes and even increments from -10 to 10 labeled.

-10 To 10 Coordinate Grid With Axes And Even Increments Labeled And Grid Lines Shown

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with the…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with axes and some increments from -10 To 10 labeled.

-10 To 10 Coordinate Grid With Axes And Increments Labeled By 10s

Illustration of an xy grid/graph. It is the Cartesian coordinate system with axes and some increments…

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with axes and some increments from -10 To 10 labeled.

-10 To 10 Coordinate Grid With Axes And Increments Labeled By 10s And Grid Lines Shown

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with axes…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with the x- and y-axes and increments from -10 To 10 labeled by 5s.

-10 To 10 Coordinate Grid With Axes And Increments Labeled By 5s

Illustration of an xy grid/graph. It is the Cartesian coordinate system with the x- and y-axes and increments…

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with the x- and y-axes and increments from -10 To 10 labeled by 5s.

-10 To 10 Coordinate Grid With Axes And Increments Labeled By 5s And Grid Lines Shown

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with the…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with the x- and y-axes and some increments from -10 To 10 labeled.

-10 To 10 Coordinate Grid With Axes And Some Increments Labeled

Illustration of an xy grid/graph. It is the Cartesian coordinate system with the x- and y-axes and some…

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with the x- and y-axes and some increments from -10 To 10 labeled.

-10 To 10 Coordinate Grid With Axes And Some Increments Labeled And Grid Lines Shown

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with the…