A cargo aircraft is an aircraft that can carry cargo. In some cases, it may also carry passengers.
Civilian aircraft
Civilian cargo aircraft carry cargo or mail. This is generally a kind of airliner, designed for passengers but modified for cargo. Some civilians cargo aircraft are specially equipped for carrying oversized cargo such as aircraft wings, tank-trucks, rocket pieces, or sometimes military heavy trucks and tanks.
Examples
Airbus A300-600ST, Antonov An-225, Boeing 747LCF,
Military aircraft
Military transport aircraft can carry cargo and passengers. Passengers are usually troops, including paratroopers. The seats are usually simple. These aircraft typically have a sloping loading door at the rear of the fuselage for quick loading and unloading. Some use turbojets, others use turboprop engines.
Examples
Airbus A400M, Antonov An-26, Boeing C-17 Globemaster III, Casa C-295, Douglas C-47 Skytrain, Lockheed C-5 Galaxy, Short 330UTT, Transall C.160.
Bibliography
Frawley, Gerard, The international directory of military aircraft 2002/2003 . London : Aerospace Publication, 2002. . Gaillard, Pierre, Avions et hélicoptères militaires d'aujourd'hui Paris, France : Larivière éditions, 1999. . Kaminsky, Tom, The United States Military Aviation Directory, London : Airtime Publishing, 2000. . Wilson, Stuart, Airliners of the world, London: Aerospace Publication, 1999. .