Daher-Socata has improved the performance and efficiency of its TBM family of fast turboprop singles with a new variant. The TBM 900, certificated and in production, retains primary airframe commonality with its predecessor TBM 850 and uses the same Pratt & Whitney Canada PT6A-66D powerplant, but promises improved efficiency and superior performance thanks to aerodynamic modifications including winglets, a vertical tailfin strake and a new tail cone.
Speaking at the company’s factory in Tarbes, France, airplane business unit senior vice president Nicolas Chabbert said: “The TBM 900 provides a new competitive edge by delivering even more on the right combination of speed, performance, efficiency and fuel consumption.”
Top cruise speed is increased to 330kt (611.16 km/h) at 28,000ft (8,534m) and maximum range is extended to 1,730nm (3,204km) with five adult passengers as a result of the fuel consumption reduction to 140 litres per hour.
Single-control throttle operation and a new torque limiter enable the use of full power – 850hp (634kW) – at takeoff, reducing ground roll even in hot-and-high conditions and improving climb rate, to reach the 31,000ft ceiling in 18min45s.
Other aerodynamic improvements include a new five-blade composite propeller and redesigned spinner, and improved engine airflow circulation thanks to a nose-to-firewall redesign including a banana-shaped air intake, carbon-fibre cowlings and new exhaust stacks.
The cockpit gets a new control yoke and centre pedestal. The display panel has been redesigned for increased visibility and interaction with secondary system controls.
A completely revamped electrical system with a 300-amp starter generator allows new avionics and electronic devices and semi-automatic start-up; a new-generation 100-amp stand-by alternator provides electrical input in case of power supply loss.
Lower cabin noise levels, automated pressurisation and new seat designs enhance passenger comfort.
Source: FlightGlobal.com
