Aerodynamic drag compensating device for e.g. median caliber cannon`s arm, has receiving unit with pallet and connected to inverter unit permitting torque around geometric axis to communicate with pivoting shaft of arm device

摘要

#CMT# #/CMT# The device has a receiving unit subjected to an aerodynamic drag and comprising a pallet (10) of reduced dimension integrated to a stem (14). The receiving unit is connected to a mechanical inverter unit (11) permitting a torque around a geometric axis (7) to communicate with a pivoting shaft (12) of an arm device (4), where the torque is in direction opposite to a torque generated by an aerodynamic drag of the arm device. The inverter has a reduction ratio equal to one. #CMT#USE : #/CMT# Used for compensating an aerodynamic drag exerted on an arm of an arm device e.g. median caliber cannon, embarked on a movable platform (claimed) e.g. an aircraft such as helicopter, terrestrial vehicle movable platform or ship movable platform , or a fixed platform, where the arm device is implemented by a shooter placed in a cabin of the helicopter to point the arm on a potential target. #CMT#ADVANTAGE : #/CMT# The shape of the pallet and the reduction ratio of the inverter unit permit to partially compensate the aerodynamic drag of the arm device in a simple manner without utilizing complex units such as motors and force sensors for ensuing the compensation and without sensing the fluctuations of aerodynamic current related to the meteorology and evolutions of the platform, and hence facilitating manoeuvring of the arm by the shooter. The arm device can be folded inside the platform, thus reducing encumbrance of the compensating device. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a perspective view of an armament of a gun port of an aircraft equipped with an aerodynamic drag compensating device. 4 : Arm device 7 : Geometric axis 10 : Pallet 11 : Mechanical inverter unit 12 : Pivoting shaft 14 : Stem.