| Chord of a Wing |
| The distance between the leading and trailing edge of a wing |
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| Cockpit |
| Where the pilot of the aeroplane sits |
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| Cold Feet |
| A complaint, otherwise known as aerosthenia or nervousness about going into the air |
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| Combustion Chamber |
| The space between the top of the cylinder and the top of the piston where the explosion of the air-fuel mixture takes place |
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| Compression |
| The upward stroke of the piston which compresses the air-fuel mixture in the combustion chamber |
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| Concentrating ring |
| A hoop which supports the weight of the basket, its contents, etc., on a balloon or parachute. |
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| Concentration bar |
| It fills the same purpose as the concentration ring in balloons and parachutes. |
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| Conk |
| The word used to describe an aeroplane engine when it fails |
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| Connecting sleeve |
| Metal or wood cylinders used for joints of inflation tubing. |
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| Contact |
| The word used to indicate that the switch is on |
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