Did You Know...
...that the first rickshaw was invented in 1869 by an American Baptist minister, the Rev. E. Jonathan Scobie, to transport his invalid wife around the streets of Yokohama?
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| Number | Title | Issue Date |
| 7185858 | Spacecraft gyro calibration system A method of calibrating a gyro (42) of a spacecraft (14) may include determining a yaw attitude residual of the spacecraft. Roll gyro bias residual is determined in response to the yaw attitude residual. The gyro (42) is calibrated in response t... | 03/06/2007 |
| 7165746 | Vibration motor primary flight control actuator The invention provides an actuator for a control surface (7), in particular for a primary flight control of an aircraft, the actuator including a main actuator (3) in a main control line (1) for actuating the control surface (7), the actu... | 01/23/2007 |
| 6169496 | Banked flight stall warning device and method A flight warning system comprises an outside temperature probe for sensing outside temperature, a gyroscope for sensing aircraft bank angle, a static transducer for sensing static pressure, and a dynamic pressure sensor for receiving total pressure from a... | 01/02/2001 |
| 6073065 | Method for detecting a bank angle experienced by a moving vehicle A method for detecting a bank angle experienced by a motor vehicle (10) is disclosed. Three estimates of the vehicle bank angle, γa, γω and γ.nu. are determined from separate data and are then used to determine an estimate of th... | 06/06/2000 |
| 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 a trim attitude (e.g., signals indicative of bank angle, l... | 06/29/1993 |
| 5213283 | Low speed turn coordination for rotary wing aircraft A helicopter flight control system (21) includes a model following control system architecture which automatically provides a coordinating yaw command signal to the helicopter tail rotor to coordinate helicopter flight during a low speed banked turn. The ... | 05/25/1993 |
| 5170969 | Aircraft rudder command system An aircraft rudder command system for allowing a pilot to directly input a sideslip command for yaw-axis control through use of the rudder pedals is disclosed. The aircraft rudder command system includes a pedal input device for receiving a pedal input si... | 12/15/1992 |
| 5095746 | Aircraft banking angle indicator An aircraft banking angle indicator which includes a banking angle sensing arrangement for generating an actual banking angle signal, a maximum banking angle input device for manually entering a selected maximum banking angle, a signal processing arrangem... | 03/17/1992 |
| 5096146 | Apparatus and methods for controlling commanded operation of an aircraft within a predetermined flight parameter limit A controller for generating a bank angle limit for an aircraft during takeoff with an nonoperational engine. The controller operates so that there are minimum and maximum bank angle limits. Between these minimum and maximums, there is a linear relationshi... | 03/17/1992 |
| 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 the roll control loop as a function of the sum of a yaw rat... | 09/17/1991 |
| 5023796 | Flight control apparatus with predictive heading/track hold command A flight path control apparatus for controlling an aircraft to execute a capture maneuver of a predetermined heading or track and provide a roll correction signal for controlling the path of said aircraft along an exponential transition curve. The correct... | 06/11/1991 |
| 4964598 | Apparatus and method for controlling aircraft, particularly remotely-controlled aircraft A remotely-controlled aircraft comprises a sensor for sensing the actual rate-of-turn of the aircraft and for generating a rate-of-turn signal proportional thereto, which signal, inherently also proportional to the actual bank-angle of the aircraft, is ap... | 10/23/1990 |
| 4553210 | Complemented roll attitude flight control system A system and technique is disclosed which provides a complemented roll attitude signal for use in the control system of an aircraft. The complemented roll attitude is produced by combining a yaw rate and true airspeed signal with a conventional roll attit... | 11/12/1985 |
| 4490668 | Microwave radiator utilizing solar energy A space-oriented apparatus for converting solar energy to microwave energy. The microwave energy is used to generate an RF beam for propagation to the earth. The apparatus is formed into an extended planar sandwich-like structure carrying solar cells on o... | 12/25/1984 |
| 4371939 | Roll attitude inhibit of aircraft coordinated turn disengagement The engagement (83) of a flight director (82) that provides automatic steering by roll angle of an aircraft which includes an automatic yaw trim system (FIG. 2) that will automatically coordinate turns induced by the flight director establishes (155, 157,... | 02/01/1983 |
| 4330829 | Helicopter flight stability control induced oscillation suppression Oscillations in helicopter attitude sustained by the aerodynamic response of the helicopter to an automatic flight control system which is responsive to an attitude sensor, are eliminated by band reject (notch) filtering of a control system stability comm... | 05/18/1982 |
| 4312039 | Transient free synchronization system An aircraft automatic yaw stabilization system with heading hold and manual command override capability provides circuit means responsive to the manual commands for suppressing heading transients in commmanding a heading change and in the ultimate capture... | 01/19/1982 |
| 4127245 | Helicopter pitch rate feedback bias for pitch axis maneuvering stability and load feel The longitudinal cyclic pitch channel of a helicopter has a negative pitch rate feedback bias added thereto when flying at higher speeds, thereby to stabilize the pitch axis against aft-load maneuvering instability and/or to induce a requirement for the p... | 11/28/1978 |
| 4098215 | Steering control system for hydrofoils An improved steering control system is provided for improving the handling qualities of hydrofoil craft during takeoff. In steering control systems for hydrofoils, the craft is banked by operation of control surfaces and the rudder is turned in the corres... | 07/04/1978 |
| 4094479 | Side slip angle command SCAS for aircraft A yaw axis stability and command augmentation system (SCAS) particularly applicable to STOL type aircraft includes three primary control terms proportional to side slip angle, side slip angle rate and rudder pedal force, wherein side slip angle rate is sy... | 06/13/1978 |
| 4046341 | Aircraft angle-of-attack and sideslip estimator The instant invention relates to a system for estimating aircraft angle of attack and sideslip angle ଲ from measured quantities such as angular body rate and linear acceleration. The estimated angle of attack and sideslip signals are generat... | 09/06/1977 |
| 3958522 | Automatic control system for hydrofoil craft A control system for hydrofoil craft is one in which control surfaces are moved automatically in response to signals derived from the motion of the craft to stabilize and control the craft. In such systems, a potentially dangerous condition can occur in c... | 05/25/1976 |
