초록 ▼

An improved apparatus for automatic deceleration of a helicopter to substantially zero air speed from a glide slope descent. Parameters available in a typical helicopter automatic flight control system, such as vertical speed, glide slope error, longitudinal acceleration, and pitch attitude are blen

An improved apparatus for automatic deceleration of a helicopter to substantially zero air speed from a glide slope descent. Parameters available in a typical helicopter automatic flight control system, such as vertical speed, glide slope error, longitudinal acceleration, and pitch attitude are blended together in a manner as to approximate helicopter ground speed which is then used in a control law computation to decelerate the helicopter to a near hover speed as the vehicle approaches a preset altitude minimum.

대표청구항 ▼

Apparatus for generating flight path control signals for an aircraft having a pitch attitude control system including rotor cyclic pitch command means for controlling the pitch attitude and rotor collective pitch command means for controlling the vertical lift thereof, means for providing a first si

Apparatus for generating flight path control signals for an aircraft having a pitch attitude control system including rotor cyclic pitch command means for controlling the pitch attitude and rotor collective pitch command means for controlling the vertical lift thereof, means for providing a first signal representative of a vertical velocity of said aircraft with respect to a predetermined longitudinal flight path, means for providing a second signal representative of a velocity error corresponding to a difference in actual flight path from said predetermined flight path, means for combining said first and second signals to form a difference thereof, and function means proportional to an angular measure of said predetermined flight path, said angular measure relating vertical velocity to longitudinal velocity, said function means responsive to said difference signal, whereby to derive a longitudinal velocity signal corresponding to the vertical velocity of said aircraft with respect to said actual flight path.