METHOD OF DETERMINING CENTER OF MASS OF AC AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2018 - IPC G01G19/07 

FIELD: aviation.

SUBSTANCE: inventions relate to methods and devices for determining the centre of mass (CM) of an AC (AC) in flight. Method is based on the measuring of AC flight parameters, includes the measurement of accelerations relative to CM in two fixed points located along the longitudinal axis of AC in a known distance apart from each other, with the help of accelerometers installed in these points, one in the tail, the other in the head parts of the fuselage, usage of the values of gravity acceleration and on their basis definition of CM in the set flight mode when performing the corresponding manoeuvre. As tangible accelerations with respect to the AC CM, the tangential accelerations of AC are used, for which the accelerometers are set so that their sensitivity axes are oppositely directed and parallel to the vertical axis of AC. Additionally, a signal is used from the on-board navigation system corresponding to a linear acceleration of AC relative to the vertical axis. When determining the centre of mass, the manoeuvres "calibrating" and "diving" are performed alternately. The device for implementing the method includes two accelerometers, an on-board navigation system, two summing devices, three multipliers, two dividers, a cosine determining unit, and a subtractor connected in a specific manner.

EFFECT: simplification of implementation and application, increasing the accuracy of measuring the coordinates of the location of the centre of mass of the aircraft.

2 cl, 1 dwg