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7510141 Autonomous control method for small unmanned helicopter  
An autonomous control method autonomously controls a small unmanned helicopter toward target values, such as a set position and velocity, by deriving model formulas well suited for the autonomous...
7305286 System and method for gyro enhanced vertical flight information  
A flight instrument and associated method where vertical speed information is combined with gyro information to produce gyro enhanced vertical speed information that is displayed to a pilot. The...
7191985 Aircraft multi-axis modal suppression system  
Vibrations due to excitation of the natural modes of an aircraft's body are suppressed by an active multi-axis modal suppression system. Dedicated sensors are positioned in the aircraft at optimal...
7130744 Method for determining and compensating the scale factor error caused by a wavelength change in a GPS-based inertial navigation system  
In a GPS-supported inertial attitude and heading reference system equipped with a Kalman correction filter and a multiple axis fiber optic gyroscope, the invention provides for only that scale...
7120522 Alignment of a flight vehicle based on recursive matrix inversion  
A method for recursively determining alignment of a flight vehicle during flight is provided. The method includes generating data in a reference coordinate frame and in a second coordinate frame at...
6876926 Method and system for processing pulse signals within an inertial navigation system  
A method and system for processing pulse signals within an inertial device is provided. The inertial device may have inertial sensors, such as accelerometers and gyroscopes. The inertial sensors...
6845303 Micro-satellite and satellite formation for inverse and distributed proximity operations  
A method and apparatus for conducting proximity operations is disclosed. The method called inverser proximity operations includes maneuvering an active vehicle into general proximity to a target...
6751532 Wind turbulence prediction system  
The wind turbulence prediction system according to the present invention provides a measurement system, which is capable of measuring three-dimensional wind turbulence, exhibits limited aerodynamic...
6691006 Dynamic assignment of maintenance tasks to aircraft maintenance personnel  
A system for assigning maintenance tasks to crew members of a maintenance crew during a dynamically-planned maintenance check for an aircraft includes means for obtaining a dynamic maintenance flow...
6678567 Pilot input device to control direction, altitude, and speed of aircraft  
An integrated side stick controller combines air speed, turning and altitude changing rate control into one pilot input control device. Movements of the integrated side stick controller will...
6621245 System for the stabilization of an object mounted on a moving platform  
A calculation system for calculating the control signals which are designed to perform a frequency-dependent weighting of the angular velocity signals and the angular position signals. The angular...
6352223 System for the yaw control of an aircraft  
The present invention relates to a system for the yaw control of an aircraft fitted with a plurality of engines, the system (SC) comprising in particular a computation unit ( 16 ) formulating a...
6338454 Aircraft flight control device  
The present invention relates to a flight control device for an aircraft comprising a control ( 2 ) and a means for actuating a controlled member (RP, RQ) to which a command is applied. According...
6336060 Arithmetic processing method and system in a wide velocity range flight velocity vector measurement system using a square truncated pyramid-shape five-hole pitot probe  
An arithmetic processing method and system in a wide velocity range flight velocity vector measurement system using a square truncated pyramid-shape five-hole Pitot probe. Approximation equations...
6073084 Process and device for verifying the consistency of the measurements from an angle-of-attack probe  
A process and a device for verifying the consistency of the measurements made by an angle-of-attack probe (2) mounted on an aircraft. The device (1) includes: first system (3) for computing a first...
5948045 Method for airbourne transfer alignment of an inertial measurement unit  
A method for determining the initial conditions for an inertial measurement nit (IMU) of a second vehicle launched from a wing of a first vehicle is provided. The method includes the steps of...
5797105 Air active control aircraft using three dimensional true airspeed detection system  
An air active control aircraft having an air three-dimensional true airspeed detection system composed of an air data sensor probe in the form of a truncated pyramid-shape Pitot probe and an air...
5678786 Reconfigurable helicopter flight control system  
A failure of any one of three swashplate actuators of a helicopter rotor blade is detected. Once such a detection is made, the position of this nonfunctional swashplate is locked and measured. The...
5465212 Helicopter integrated fire and flight control having a pre-launch and post-launch maneuver director  
An integrated fire and flight control (IFFC) system determines a ballistic firing solution based on the position of targets relative to a helicopter and also based on the type of weapons to be...
5428543 Vertical control system for rotary wing aircraft  
A vertical control system for a rotary winged aircraft receives inputs from a displacement collective stick and a sidearm controller. The system provides a set point for the vertical rate of change...
5337982 Apparatus and method for controlling the vertical profile of an aircraft  
In an aircraft, there is included a Flight Management System (FMS), Autopilot and Autothrottle for controlling the aircraft. The apparatus has a plurality of outputs for definition of the real-time...
5308025 Spacecraft spin axis capture system and method  
A control system and method for causing a spacecraft (10) initially spinning about a principal axis of inertia (H) to transition to spin about an arbitrary command axis (3) is presented in which...
5195700 Low speed model following velocity command system for rotary wing aircraft  
A helicopter flight control system (21) includes a model following control system architecture which operates in a velocity command mode at low ground speeds. The control system processes...
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...
4914598 Integrated redundant reference system for the flight control and for generating heading and attitude informations  
A plurality of two-axis rate gyros are arranged in relation to an aircraft-fixed coordinate system such that they redundantly supply angular rate information. A plurality of accelerometers supply...
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...
4611863 Magnetically supported and torqued momentum reaction sphere  
Angular momentum exchange apparatus comprising, in combination: a massive rotor of substantially spherical configuration having at least an outer surface of electrically conductive and magnetizable...
4580223 Incorporation of pitch bias actuator function into an existing AFCS  
An aircraft automatic flight control system (AFCS) includes a pair of fast, limited authority inner loop actuators responsive to signals indicative of aircraft attitude or other flight parameters...
4562978 Adjustable mounting tray for aircraft inertial reference units and the like  
An adjustable mounting tray for installation of an aircraft gyroscopic and/or inertial reference apparatus, comprises, a baseplate member mounted so that it is substantially level in roll and pitch...
4484283 Aircraft roll-yaw fault protocols  
In an aircraft automatic flight control system, automatic shutdown (42) of the roll axis thereof (FIG. 1) as a consequence of faults detected therein also provides automatic shutdown of the yaw...
4460964 Multiaxis hardover protection apparatus for automatic flight control systems  
A hybrid analog/digital autopilot utilizing analog inner loops in each control axis of the aircraft and a digital processor for providing outer loop commands and inner loop gain augmentation...
4420808 Multi-axis force stick, self-trimmed aircraft flight control system  
A four axis force stick provides signals indicative of force applied to the stick in an axis corresponding to a control axis of an aircraft, including pitch, roll, yaw and lift/speed. The...
4417308 Dual inner loop fault inhibit of aircraft outer loop  
In an automatic flight control system, failure of dual inner loop actuators (12, 13) to track position (22, 23) within a permissible tolerance (182) of each other will cause automatic shut down...
4392203 Aircraft coordinated turn with lagged roll rate  
An aircraft automatic flight control system having a roll channel (FIG. 1), a yaw outer loop trim system (bottom of FIG. 2) and a yaw stability inner loop (top of FIG. 2) provides proportional...
4387432 Pulsed aircraft actuator  
In an aircraft automatic flight control system, proportional commands (54, 55) provided to fast, limited authority inner loop actuators (12, 13) are integrated (41), and when the integrator output...
4387431 Roll attitude inhibit of aircraft automatic outer loop  
In an aircraft automatic flight control system (FIG. 4) the application of force to a control member (35R, FIG. 5) forces (222, 216, 217, 212, 213) the flight path controlling, full authority outer...
4387430 Pitch stick force inhibit of aircraft automatic outer loop  
In an aircraft automatic flight control system, a flight path controlling, full authority outer loop actuator (37) operated in response to the integral (41) of commands thereto, is shutdown (111,...
4385356 Non-saturating airspeed/attitude controls  
In a helicopter automatic flight control system having both automatic pitch attitude retention (70, 71) and automatic airspeed hold (84) and responsive both to pitch attitude error (206) and...
4385355 Automatic outer loop centering of aircraft inner loop  
An aircraft automatic flight control system includes a pair of fast, limited authority inner loop actuators (12, 13) responsive to signals (52-55) indicative of aircraft attitude (68, 69) or other...
4383299 Command-inhibited aircraft attitude reference adjustment  
In an aircraft automatic flight control system (FIG. 1) beeping of the reference voltage in attitude synchronizing and beeping circuits (70, FIG. 4; 70R, FIG. 6) is inhibited (196, 201; 278, 282)...
4382283 Helicopter attitude and airspeed acquisition and retention system  
A helicopter pitch axis autopilot system, including airspeed hold at cruise speeds and pitch attitude hold below cruise speeds, includes integrated longitudinal acceleration drift corrected by...
4303978 Integrated-strapdown-air-data sensor system  
A plurality of inertial measuring unit (IMU) modules (41A, B, C and D) each comprising gyros and accelerometers (61, 65 and 67) for sensing inertial information along two orthogonal axes, are...
4236687 Ejection seat with pitch, roll and yaw control  
An aircraft ejection seat having pitch, roll, and yaw control. Two gimbal rocket motors are attached to an aircraft ejection seat. A servo control circuit rotates the rocket motors in response to...
4213584 Helicopter hover stability and cruise gust effect alleviation  
The pitch and roll channels of the stability augmentation system (inner loop) of a helicopter automatic flight control system are utilized to provide positional and attitude stability at low speeds...
4212443 Strapped down attitude and heading reference system for aircraft employing skewed axis two-degree-of-freedom rate gyros  
A set of two two-degrees-of-freedom rate gyroscopes and three linear accelerometers are assembled in a single module adapted to be mounted within a single aircraft electronics control unit, the...
4199715 Method and apparatus for defining an equipotential line or _surface in the earth's atmosphere and measuring the misalignment of a _selected line or plane relative to an equipotential line or surface  
The present invention relates to a method and apparatus for detecting the earth's static electric field and determining the contour of its equipotential lines and surfaces and for utilizing the...
4173784 Inertial system having correction means for effects of gravitational anomalies  
Conventional first and second Schuler tuned inertial platforms, that are physically displaced from each other by a predetermined distance, are employed in an inertial system to reduce navigation...
4082238 Aircraft control system providing hardover protection and full control authority  
In a helicopter a servo system connected to operate in parallel with the rotor blade pitch controlling linkages and also to receive autopilot generated signals directing maneuvers. The system...
4067520 Method and apparatus for terrain avoidance  
A method and apparatus for utilizing the earth's static electric field to tect and/or avoid orographic protrusions extending from the earth's surface, the invention particularly allows detection of...
4039165 Derived rate circuit for aircraft  
The circuit derives a rate signal from an a.c. signal proportional to attitude displacement provided, for example, from the synchro pickoff of a vertical gyroscope or an inertial navigation system,...
Matches 1 - 50 out of 139 1 2 3 >