The natural force pulling everything to Earth

A place on either land or water where aircraft can land and take off for flight.

A wicker basket, hanging below the envelope, used to transport passengers and propane tanks.

To rise or float on the surface of water or within the atmosphere.

Height above sea level or ground level expressed in units.

The force which moves an aircraft forward in flight

Usually a single-engined airplane that will pull a glider from the ground to an altitude where it can be released.

The name of the two French brothers who created the first successful, manned, hot air balloon in 1783.

A region of the atmosphere where ozone is created.

The average rate at which temperature decreases with an increase in altitude.

A force which slows the forward movement of an aircraft in flight

Sections of the wing which can move up or down and control roll.

Instrument to provide the height of the balloon above sea level.

A region of the atmosphere where electrons are gained or lost.

A column of air that moves upwards.

An upward force that opposes the downward pull of gravity

A part or surface, such as a wing, propeller blade, or rudder, whose shape and orientation control stability, direction, lift, thrust, or propulsion.

An instrument which measures the temperature within the envelope.

Term for unmanned aircraft, operated by a pilot on the ground. This includes drones.

The downward movement of air behind a wing in flight.

Relating to the forces of air in motion

The curved part of an airfoil from its leading to trailing edge.

An instrument to determine the rate of climb or descent; sometimes referred to as vertical velocity indicator.

Relating to birds.

A spinning column of air that is created behind the wingtip as a result of air moving from an area of high pressure on the bottom to an area of low pressure on top.