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    PECULIARITIES 0F THE DESIGN CONFIGURATION:

 

-  Better propeller efficiency - The high speed airflow behind the propeller is not obstructed by a bulky fuselage. The propeller fan effect which is destabilizing on a conventional aircraft is stabilizing on a pusher of this configuration.

-  Reduction in fuselage drag - The fuselage can be given a cleaner aerodynamic shape. It is not in an accelerated helicoïdal airflow behind a propeller. These two factors contribute to a significant drag reduction.

-  Noise reduction - For the reasons given above, the wind noise perceived in the cabin is lessened. On the other hand, the engine, located behind the cabin can be more effectively sound-proofed; therefore, it is less noisy for the crew and passengers.

-  Very good visibility - The wing is behind the cabin and the forward part of the fuselage is well glazed, offering excellent visibility.

  - Convenient engine location - The location of the engine, very close to the aircraft C.G. makes it possible to easily adapt many types of engines with only minor airframe modification and without drastic C.G. shift.

 

Photo Geoff Jones

-  Main load structures grouped together- All main components are grouped at the center of the aircraft: Engine, transmission, wing attachments, main landing gear.

-  Fuel economy - Lower fuel consumption is attained as a result of better propeller efficiency and cleaner aerodynamics.

  -  Aesthetics - Jet aircraft look.

The engine/propeller configuration requires a few remarks regarding the aircraft operation.

There is very little torque reaction to be corrected with the rudder when changing engine power output. This feature facilitates control of the aircraft, especially at take-off and when overshooting.

The tail control surfaces are free from propeller slipstream effects: therefore, they do not feel any of the secondary perturbations which are common with tractor configurations. However, take-off and approach speeds are somewhat higher but the risk of premature take-off is practically eliminated.

                    

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