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The Airbus A400M Atlas [nb 1] is a European four-engine turboprop military transport aircraft. It was designed by Airbus Military , now Airbus Defence and Space , as a tactical airlifter with strategic capabilities to replace older transport aircraft, such as the Transall C-160 and the Lockheed C-130 Hercules . [ 3 ]
By May 2004, Airbus decided that the A400M design would have a "handed" propeller configuration, meaning that the pair of propellers on each wing would turn in opposite directions known as rotating "down between engines". Two different gearboxes are required, one with extra components to reverse the rotation of the propeller.
Feathered propeller on the outboard TP400 turboprop of an Airbus A400M. On most variable-pitch propellers, the blades can be rotated parallel to the airflow to stop rotation of the propeller and reduce drag when the engine fails or is deliberately shut down. This is called feathering, a term borrowed from rowing. On single-engined aircraft ...
One year after its inception the TP400 was selected by Airbus Military to design the engine to power the A400M. [9] In 2004, work began on analyzing the engine design, with the initial ground tests taking place a year later. The first engine run with propeller took place in 2006, with the first flight of the TP400 aboard a testbed taking place ...
This can in turn affect performance under extreme conditions and therefore flight safety certification. Some modern types, such as the Airbus A400M, have counter-rotating propellers in order to meet air safety requirements under engine-out conditions.
Swept propeller Scimitar propeller on a 1926 Alexander Eaglerock Eight-blade scimitar propellers on the Airbus A400M Atlas. A scimitar propeller is a type of propeller that has curved blades with increasing sweep along the leading edge. Their name is derived from their visual similarity to the curved blades of scimitars.
2001 : Ratier-Figeac receives the order to produce the elevator for the Airbus A380 2003 : Ratier-Figeac obtains the contract to produce the propellers for the A400M. 2007 : Ratier-Figeac is the only propeller producer for the Hamilton Sundstrand group. It will be entirely incorporated by 2008.
The Airbus A400M has an atypical design, because it has counter-rotating propellers on both wings. The propellers on a wing rotate in opposite directions to each other: the propellers rotate from the top of the arc downward toward each other.
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