### vehicle | aircraft:

Plane
* All planes intersect on the equator.
* Every plane has a speed where the wing simply stops flying.
* Every plane is associated with a plane number
  - characterized by the number of units in x and y direction
* Most planes have flaps
  - wings
* Some planes carry mammals
  - fly differently than others
* Some planes have continuous displacement
  - neoprene boots, or boots covered with rubber, that can be inflated with air
* are capable of crashs
  - fall
  - near airports
  - degrees
  - essentially the same as worlds
  - fast
  - flat surfaces that extent infinitely in two directions
  - hand tools
  - hangars
  - runways
  - skies
  - taxiways
  - meanses of transportation
  - power tools
  - rivers
  - shapes
  - spheres with infinit radius and lines are circles with infinite radius
  - vehicles
* can also make aerodynamic contrails from the wing surfaces or propellors
* carry women.
* change, depending on the position of the body.
* contain bike frames
* didn t fall from the sky.
* fall from the sky when engines eat water.
* figure A two-dimensional figure that lies entirely within a single plane.
* fly at dawn, because usually there is very little wind in the early morning.
* flying upside down, even with cambered wings, can deflect enough air to get lift.
* have blades
  - mechanisms
  - screw mechanisms
  - seats
  - tails
  - windows for seeing side to side, up and down, and forward
* includes accelerators
  - aircraft engines
  - ceilings
* includes fuel gauges
  - indicators
  - pods
  - systems
  - fulcrums
* includes gas gages
  - tanks
* includes gasoline gages
  - hood ornaments
  - navigation light
* includes petrol gages
  - power trains
  - radar domes
  - ribs
  - room light
  - tail assemblies
  - walls
  - windshields
* is an aircraft
  - defined by point and normal
* kill people.
* leave trails.
* rise above the sky, flying low, flying high.
* work in three dimensions, but a boat is limited to two.
+ Fixed-wing aircraft, Parts, Tail: Aircraft :: Aerospace engineering
  * This helps the plane fly straight. Some planes have more than one tail, like the Antonov An-225. Some planes also have no tail, like the flying wing design.
+ Plane (mathematics): Surfaces :: Math stubs :: Shapes :: Geometry
  * A 'plane' is a perfectly flat surface extending in all directions. Try to imagine the ceiling of a room, only extended into all directions infinitely. All planes are flat surfaces. If a surface is not flat, it is called a 'curved surface'.

### vehicle | aircraft | plane:

Airliner
* also move faster and climb better, which tends to minimize ice.
* are airplanes.
* can fly over mountains and bad weather.
* fly just above the tropopause and just below the speed of sound.
+ Aircraft: Aerospace engineering
  * Big aeroplanes for transporting people are called 'airliners'. Now airliners need less than seven hours to travel across the Atlantic Ocean. Airliners are the quickest way to travel. Airliners can fly over mountains and bad weather. Airliners have complex technology to make them fly quickly, safely, and for less money.

### vehicle | aircraft | plane | airliner:

Airbus
* is an airliner
* usually have rows of seats along side lavatories or galleys.

Biplane
* can usually have more lift than similar monoplanes , but also create more drag.
* have a stronger structure but they produce more drag than normal fixed-wing aircraft
  * A 'biplane' Fixed-wing aircraft that is heavier than air but can fly. Biplanes have a stronger structure but they produce more drag than normal fixed-wing aircraft. Biplanes can usually have more lift than similar monoplanes, but also create more drag