The first Messerschmitt Me 209 was a single-engine racing aircraft which was designed for and succeeded at breaking speed records. This Me 209 was a completely new aircraft whose designation was used by Messerschmitt as a propaganda tool. Although the aircraft was designed only to break speed records, it was hoped that its name would associate it with the Bf 109 already in combat service.
Messerschmitt Me 209
Display model of the aircraft showing its World War II configuration
Me 209 fuselage at the Polish Aviation Museum, Kraków.
An air speed record is the highest airspeed attained by an aircraft of a particular class. The rules for all official aviation records are defined by Fédération Aéronautique Internationale (FAI), which also ratifies any claims. Speed records are divided into multiple classes with sub-divisions. There are three classes of aircraft: landplanes, seaplanes, and amphibians; then within these classes, there are records for aircraft in a number of weight categories. There are still further subdivisions for piston-engined, turbojet, turboprop, and rocket-engined aircraft. Within each of these groups, records are defined for speed over a straight course and for closed circuits of various sizes carrying various payloads.
The Lockheed SR-71 Blackbird is the current record-holder for a crewed airbreathing jet aircraft.