Numbers

Sailplanes and hang gliders belong to a group of aircraft known as gliders.  Gliders are aircraft without engines.  The sailplane is a very popular glider.  It is usually towed or pulled up into the air by an engine-powered airplane.  A towrope connects the sailplane to the airplane.  The sailplane flies on currents of rising air after the towrope is released.  These rising air currents are called "up drafts".

The hang glider looks like a triangle-shaped kite.  A harness is attached to the bottom to hold the pilot.  The pilot wears the harness and holds onto the glider as he/she runs down a hill or jumps off a cliff.  Today many hang gliders can be seen being pulled over lakes by boats.  The wind lifts the glider into the air.  The hang glider usually travels as fast as a car.  Hang gliders can fly as high as a two-story building, but never as high as an airplane flies.

 

Directions: Answer the questions about gliders.

Gliders are aircraft without .

A is usually towed or pulled up into the air by an engine-powered airplane.

"Up drafts" are air currents.

A pilot is attached to a hang glider by a .

Which of the following is shaped like a triangle-shaped kite?

hang glider
sailplane

 

Which of the following is used to connect a sail plane to an airplane?

harness
towrope

 

Which of the following flies on currents of rising air after the towrope is released?

hang glider
sailplane

 

 

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Sail Planes and Gliders