Matches 301 - 350 out of 425 < 1 2 3 4 5 6 7 8 9 >
Match Document Document Title
5365446 System for integrated pitch and thrust control of any aircraft  
A system for integrated pitch and thrust control of an aircraft. The system includes a calculation device which receives the first to sixth electrical signals, together with the tenth electrical...
5301112 Transient free synchronizer for autopilot systems  
A transient free synchronizer stores an input trim signal value on command, and provides an output signal value which transitions in a smooth, continuous manner, when the synchronizer is commanded...
5299759 Helicopter turn coordination and heading hold mode control  
A mode control (25) controls a helicopter flight control system (21) between a heading hold mode and a turn coordination mode according to switching patterns resembling the natural response of an...
5297052 Integrated fault-tolerant air data inertial reference system  
A fault-tolerant air data and inertial navigation reference system utilizes skewed axis inertial sensors and fault-tolerant redundant electronics to provide higher redundancy with fewer parts....
5265826 Helicopter engine control having lateral cyclic pitch anticipation  
A helicopter engine fuel control anticipates changes in main rotor torque in response to lateral cyclic pitch commands, to thereby minimize engine and main rotor speed droop and overspeed during...
5250947 Altitude tape for aircraft displays  
A moving altitude tape for a flight instrument display adapted to provide intuitive visual cues for determining deviation from a desired altitude. A window incorporates a digital altitude readout...
5247465 High resolution converter  
An apparatus for converting aircraft altitude encoder measurements into higher resolution values, including a microprocessor connected to monitor the aircraft altitude encoder output signals, a...
5222691 Automatic turn coordination trim control for rotary wing aircraft  
A helicopter flight control system includes an automatic turn coordination system which provides a coordinating yaw command signal to the tail rotor of the helicopter. The system stores on command...
5214596 System for determining the airspeed of helicopters  
System for determining the airspeed of helicopters, having a coupled measuring device to which is supplied by the cyclic and collective control signals, the attitude angles and the rotational...
5212480 Process for the visual display of the attitude of an aircraft for aiding piloting in space  
The invention relates to a process for the visual display of the attitude of an aircraft to assist piloting or flying in space. On the basis of the values of cardan or gimbal angles (ψ, θ, φ) of...
5142480 Method and apparatus for providing an indication as to whether an aircraft can safely glide to a selected destination  
A method and apparatus for providing an indication as to whether an aircraft can safely glide to a selected location. An electronic processor is provided with a manual data input, a Loran...
5111403 Terrain compensation method and apparatus for aircraft automatic landing systems  
Disclosed is a method of and apparatus for generating a signal representative of aircraft gear altitude after the flare maneuver is initiated in an automatic landing procedure. In accordance with...
5079711 Aircraft high altitude vertical flight path and speed control system  
A variable bandwidth factor KALT is applied in a total energy control system to obtain a reduction in throttle activity while maintaining system stability. The system has a total energy control...
5062583 High accuracy bank-to-turn autopilot  
In a bank-to-turn autopilot, increased accuracy and insensitivity to tracking noise and glint are achieved by using a yaw LOS rate to drive the roll rate loop and by sending only a body coordinate...
5058427 Accumulating altimeter with ascent/descent accumulation thresholds  
An accumulating altimeter includes a programmable accumulator which selectively accumulates altitude changes from a reference altitude in accordance with accumulation thresholds. Altitude changes...
5050086 Aircraft lateral-directional control system  
An aircraft's horizontal flight path and sideslip angle is controlled in a system having a roll control loop and a yaw control loop. An incremental aileron position command signal is generated in...
5050087 System and method for providing accurate attitude measurements at remote locations within an aircraft  
An improved method and system for providing accurate attitude measurements at a location in an vehicle remote from its inertial navigation system is disclosed. A relatively low cost, lightweight...
5046010 Fixed-echo cancelling radio altimeter and method of operating same  
A low altitude radio altimeter of the FM/CW type which transmits a sawtooth frequency wave and has a transmitting and a receiving aerial. A beat frequency signal Fb t between the transmitted and...
5036469 Pitch attitude command flight control system for landing flare  
This invention provides a flare control modification for pilot-in-the-loop aircraft maneuver command electronic flight control systems. During flare, pilot pitch control inputs are interpreted as...
5008825 Apparatus and methods for automatically maintaining aircraft track angle  
There is provided a controller for aiding a pilot to control an airplane's track over the ground. While the airplane is in the air, a lateral control subsystem is provided for automatically holding...
5003305 Apparatus and method for displaying aircraft flight path angle on an attitude display indicator  
A flight path angle symbol is positioned on an aircraft attitude display indicator as a function of either a measured flight path angle or a flight path angle commanded by the pilot. When the...
4980835 Control law system for X-Wing aircraft  
Control law system for the collective axis, as well as pitch and roll axes, of an X-Wing aircraft and for the pneumatic valving controlling circulation control blowing for the rotor. As to the...
4977401 Head-up display  
A head-up display for indicating the attitude and flight-path angle vertically, the attitude in roll and preferably the heading attitude and heading track angle of a vehicle, preferably an air...
4970651 Autonomous kinematic measurement system for helicopters  
An autonomous kinematic measurement system for helicopters is disclosed. A helicopter comprises a lifting rotor, an anti-torque rotor, first means to control the cyclical pitch and the collective...
4964599 System for controlling roll and yaw of an aircraft  
System for controlling roll and yaw of an aircraft. The system includes a device capable of elaborating, from electric signals respectively representative of the position of a first voluntary...
4947334 Helicopter control systems  
A helicopter control system comprises a flight control computer, an engine control computer and an integrated flight and engine control computer, the latter generating output signals operative both...
4882697 Stabilization control circuit for vertical position in an inertial navigator  
Vertical velocity and vertical position of an aircraft are derived from the vertical acceleration and a measurement of altitude based on barometric pressure. An acceleration correction signal and a...
4878054 Method and device for representing the horizon on board an aircraft  
As a method and device for representing the horizon on board an aircraft, there is displayed on the cathode tube of a collimator an image comprising a circle of small size inside which there are,...
4849893 Computer control system  
A computer control system, especially a flight control computer system, comprises a series of computer modules operating in parallel and asynchronously to carry out respective parts of an overall...
4805108 Low flight method for automatic course determination  
A low flight method for automatic course determination when approaching a given target site is disclosed wherein a terrain memory is used in which terrain points in grid type distribution of the...
4797829 Flight control optimization system for multi-control surface aircraft  
A flight control system utilizing multi-controlled surfaces to provide the necessary control power and feedback logic to stabilize the aircraft with minimal noise amplification. In addition, a...
4773017 Method and device for assisting height holding in air navigation  
A method and device are provided for assisting in height holding in air navigation, consisting, for any point (M) of the image of the landscape flown over by the aircraft (A), located by its angle...
4758958 Method and apparatus for trimming and stabilizing an aircraft  
An aircraft, such as a helicopter, is trimmed into a desired position by ducing a trimming control signal during the maneuver for the desired positive and adjusting control forces in response to...
4723214 Automatic camber control  
Wind tunnel data for a three control surface aircraft is developed for lift, pitching moment, and drag coefficient characteristics. This data is then input into a Lagrange optimization program to...
4697768 Flight control system employing complementary filter  
Strake, flap and canard control surfaces of an aircraft are driven by an error signal which is comprised of a pilot stick command signal and feedback components including measured vertical...
H000247 Roll measurement system for flight vehicle  
A roll measurement system for a flight vehicle, such as a tank-launched ged projectile or guided missile, includes a power source and a pulsed laser, such as a laser diode, which propagates a laser...
4633404 Automatic deceleration of aircraft during descent  
Deceleration control apparatus for an aircraft having an automatic altitude capture and hold system and an airspeed hold system, both systems controlled by controlling pitch attitude wherein during...
4626998 Heading reference trim system  
A heading trim reference system provides beep commands indicative of a desired heading/attitude change to the roll channel of an AFCS as roll commands at slow speed in a conventional manner, and to...
4608641 Navigational aid  
An aircraft operating in a gravitational field and having conventional sensors for measuring true air speed (sensors 10, 11), angles of incidence and yaw (sensors 13, 12), rotation about x, y and z...
4603388 VTOL altitude hold system with automatic ground effect compensation  
During a transition of a VTOL aircraft such as a helicopter, from one altitude held without its ground effect zone to another to be held within its ground effect zone, or vice versa, a collective...
4599620 Method for determining the orientation of a moving platform  
An improved method for continuously determining the orientation of a moving ser platform at a selected time fix. A Global Positioning System (GPS) is used to carry out the method and is made up of...
4590567 Large angle, gravity compensated, bank-to-turn pursuit controller  
A bank-to-turn pursuit controller provides rapid and precise pursuit steering control toward a target point with direction substantially different from the vehicle direction of travel using...
4567564 Arrangement for the attitude stabilization of flexible vehicles with weakly-dampened structural vibrations and discontinuous control intervention  
An arrangement for the attitude stabilization of flexible vehicles, such as ircraft and spacecraft. Such vehicles, due to their lightweight construction and/or large spatial extension or high...
4563743 Maneuver-force gradient system  
A maneuver force gradient system causes a helicopter, that otherwise tends to pitch up in a banked turn, to pitch nose-down. A command signal (25) is provided as a function of the roll angle to...
4563742 Combined motion cueing attitude indicator  
An attitude indicator provides a display which combines the motion of an aircraft symbol with that of a background/horizon symbol to achieve the best features of conventional "inside-out" and...
4562546 Stability augmentation system for a forward swept wing aircraft  
A stability augmentation system for a forward swept wing aircraft is disclosed that corrects a dynamic instability phenomenon which occurs when the whole vehicle (rigid body) motion couples with...
4525784 Steering and stabilization system for vehicles  
A steering and stabilization system for an aircraft or other vehicle including a device, for the determination of attitude of the vehicle, in which three, or alternatively, two magnetometers are...
4507962 Digital barometric altimeter  
A digital barometric altimeter has an electrical pressure transducer juxtaposed with a pitostatic port, and has a processor located remotely from the port, interconnected with the transducer by an...
4490793 Cruise speed control for aircraft performance management system  
A cruise speed control apparatus in an aircraft performance management system wherein target Mach command is supplied to the engine automatic throttle controls to establish an engine thrust to...
4488235 Speed control system for aircraft  
Speed control apparatus for use in an aircraft performance management system of the type wherein a target Mach number command is supplied to the aircraft pitch controls to attain the target Mach...
Matches 301 - 350 out of 425 < 1 2 3 4 5 6 7 8 9 >