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4980833 |
Airplane take-off monitor with learning feature
A take-off performance monitor uses a sensor to produce a movement signal proportional to the movement of an aircraft during a take-off roll and, for each take-off, historical data is generated and...
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4972321 |
Lateral axis rollout control for aircraft
Apparatus for guiding an aircraft along the center line of a runway at rollout touchdown. A rollout predict path command is generated in accordance with a first path segment Y 1 =T 1 (Y m +Y u...
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4956780 |
Flight path angle 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...
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4750127 |
Energy compensated target speed for aircraft descent
Energy compensation means (64) for an onboard aircraft flight management system (12). The energy compensation means may be used to eliminate unwanted throttle activity during unscheduled level...
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4740899 |
Use of headwind and airspeed to achieve a transition to a hover in a helicopter or vtol aircraft
An improved system and technique is disclosed which enables an aircraft control system to bring an aircraft to hover with no direct measurement of ground speed. The system includes a device for...
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4695013 |
Landing aid
A warning device, for a helicopter with a tail rotor and a mechanical protection device therefor, for giving during emergency power-loss landings a flare signal to the pilot to initiate flare...
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4554543 |
Glide slope indicator system
A glide slope indicator system in which light from an incoming aircraft's landing light is shaped by spherical/cylindrical lens combination into a line image which strikes a linear photodiode...
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4533999 |
Aircraft roll steering command system
Aircraft roll command signals are generated as a function of the Microwave Landing System based azimuth, groundtrack, groundspeed and azimuth rate or range distance input parameters. On initial...
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4482961 |
Automatic control system for directional control of an aircraft during landing rollout
A control system for maintaining an aircraft within the lateral boundaries of a runway during landing rollout under conditions of combined crosswind and low runway friction is disclosed. An...
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4419732 |
Method and apparatus for an aircraft inner loop elevator control system
An improved inner loop control is disclosed for use in an aircraft pitch axis control system. Signals representative of vertical acceleration and pitch rate are complementary filtered and summed to...
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4413321 |
Rapid detector of a wind gradient
The invention concerns a process for the rapid detection of a wind gradie t. This process utilizes the relationship existing between the aerodynamic slope γa, the total slope γ T and the...
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4413320 |
Control system
A control system directs an aircraft along a predetermined curvilinear descent path (10). The aircraft carries a plurality of sensors, for example, an altitude sensor. The system has a longitudinal...
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4385354 |
Automatically landing an aircraft
The aircraft is provided with an infrared sensor which is adjustable by means of feedback control so that its line of sight (image center) is and remains in line with the middle one of three...
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4357661 |
Aircraft landing control system
Upon aircraft landing approach, flare path command signals of altitude, vertical velocity and vertical acceleration are generated as functions of aircraft position and velocity with respect to the...
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4354237 |
Method and apparatus for producing an aircraft flare path control signal
Aircraft altitude, ground velocity, and altitude rate signals are input to a computer which, using a unique control law, generates a pitch control surface command signal suitable for guiding an...
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4345310 |
Aircraft flight control process and device
The present invention deals with a flight control process and device for an aircraft approach and landing. More in particular, the invention in use simulates ILS by using an infrared radiation...
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4316252 |
Apparatus for determining the position of an aircraft with respect to the runway
Upon landing approach to a runway, glideslope and altitude information is processed to produce an indication of ground distance to the touchdown point. Actual aircraft position is then determined...
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4106730 |
Engine out control system for STOL aircraft
A control system for automatically activating the flight control surfaces of a STOL aircraft that utilizes upper surface blown flaps when the aircraft executes a STOL landing or takeoff maneuver...
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4106731 |
Method and apparatus to overcome aircraft control problems due to wind shear
The inventive system requires that normal approach indicated airspeed and a predetermined approach groundspeed be used as the approach criteria, whichever is the least, compared to its own...
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4074878 |
Programmed flap system for an aircraft having wings
Aircraft flaps provide rearwardly convergent channels which terminate at or near the trailing edges of the flaps. The forward intakes of the channels are closed when the flaps are elevated and open...
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4058710 |
Process for preventing undesired contact with land or water by low-flying aircraft
This invention relates to a process for preventing undesired contact with land or water by low-flying aircraft which are assigned a minimum altitude and which are provided with instruments for...
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4042197 |
Automatic controls for airplane take-off and landing modes
A take-off and landing control device for automatic retraction of flaps upon stowing landing gear and upon attaining a predetermined airspeed and of indicating distance from brake release during...
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4021009 |
Vertical path control for aircraft area navigation system
In the vertical path control of an area navigation system when the aircraft ascends or descends to a waypoint with an "at-or-above" or "at-or-below" altitude requirement, vertical steering is...
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3998410 |
Apparatus and method for detecting a digital change in data
In a DME system, the least significant decade of the present aircraft to ground station distance is maintained encoded in a memory, and an up-down counter maintains a variable count. The complement...
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3958219 |
Terrain closure warning system with altitude rate signal conditioning
In an aircraft terrain warning system utilizing a radar altimeter wherein the rate of closure to the terrain is compared with the aircraft's altitude above the terrain to generate a warning signal...
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3922637 |
Aircraft landing approach ground proximity warning system
In order to provide for the additional effectiveness of a ground proximity warning system during a landing approach, the waypoint signal of an Area Navigation System is used in combination with an...
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3907223 |
Voice-directed aircraft navigation system and direction finder
A navigation-by-communication system for informing the pilot of an aircraft as to the location of the aircraft along the approach-landing path, and along the runway during the critical period of...
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3843077 |
AUTOMATIC APPROACH LANDING AND GO-AROUND ROLL AXIS CONTROL SYSTEM FOR AIRCRAFT
The present autopilot approach coupler is a ground track command system which provides switchless signal processing during localizer, tracking and flare, and in addition, provides automatic...
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3819914 |
DEVICE FOR THE FLIGHT GUIDANCE FROM A WIRELESS GUIDE BEAM
The on-board landing approach apparatus of an aircraft includes a computer between the landing receiver and the autopilot and/or the crosspointer instrument employed to direct the landing approach...
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3805033 |
AUTOPILOT GO-AROUND MODE PITCH COMMAND SIGNAL COMPUTATIONS
In a pitch command signal formulation where command error is damped by longitudinal acceleration, negative angular acceleration experienced during throttle retard in flare mode is precluded from...
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3800127 |
VERTICAL RATE REFERENCE COMPUTER FOR CONTROL OF A VTOL OR STOL AIRCRAFT AT A CONSTANT FLIGHT PATH ANGLE
A computer which derives the sine of the angle between a desired flight path and the horizontal, and thereafter derives the product of the sine and the velocity vector of the aircraft as a...
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3789356 |
MONITOR DISPLAY MEANS
A cockpit display for indicating the assessments made by a performance and failure assessment monitor of the overall performance of an automatic flight control system or of the pilot during the...
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3776455 |
TERMINAL GUIDANCE SYSTEM
A terminal guidance system including a heading command subsystem and a glide-slope command subsystem which develop command signals for use in guiding an aircraft or other vehicle into a preselected...
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3775599 |
LANDING AID SYSTEM
A landing aid system supplying accurate linear position information through comparison of rough information supplied by a conventional navigation system with information of similar nature obtained...
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3752967 |
ASCENT AND DESCENT SLOPE TRACKER SYSTEM
Aircraft instrumentation that presents a readout or control by which said aircraft can be piloted along a predetermined slope or any selected slope to a waypoint, utilizing normally available area...
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3738594 |
LIFT CONTROL MECHANISM
A controlling mechanism for a direct lift control system which is utilized primarily during the landing phase of aircraft flight to reduce the response time of the aircraft to longitudinal or pitch...
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3681580 |
ROTATION, CLIMBOUT, AND GO-AROUND CONTROL SYSTEM
We call out system an RGA system which is an abbreviation for "ROTATION-GO-AROUND". Data concerning pitch, angle of attack, longitudinal acceleration, elevator position, and flap position are used...
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3666929 |
FLIGHT CONTROL SYSTEM FOR FOLLOWING MULTI-STAGE DESCENT PROFILE
A flight control system for commanding an aircraft to fly a smoothly curved descent path during transition from a first linear descent path to a second linear descent path. The control system...
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3626163 |
AUTOMATIC LANDING SYSTEM
A simple and inexpensive multimode automatic landing system comprising altitude hold means, glide slope control means, and flare control means. Air data sensing means are utilized in all systems,...
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3624366 |
VERTICAL FLIGHT PATH ERROR ALTIMETER
A vertical flight path error indicating system is disclosed for presenting an easily interpretable indication of vertical flight path error to show the direction and degree of the error and the...
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3620488 |
AIRCRAFT COMMAND MIXING DEVICE
A system is disclosed for producing aircraft steering command signals for application to the controls of a vertical takeoff and landing (VTOL) or a vertical/short takeoff and landing (V/STOL)...
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3610930 |
INDEPENDENT INFRARED LANDING MONITOR
A method and system for landing an aircraft in substantially all meteorological conditions affecting visibility is disclosed. The method and system are the result of the discovery that infrared...
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3573827 |
RUNWAY CENTERLINE DISPLAY
Apparatus using a signal from a ground based station, a signal corresponding to the known heading of a runway and signals provided by onboard sensors in conjunction with pilot inputs to present to...
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3550128 |
GAIN ADJUSTMENT MEANS FOR BEAM COUPLERS
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3521839 |
CONTROL APPARATUS FOR AIRCRAFT
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3519806 |
ACTUAL SLOPE COMPUTER
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3401904 |
Cross-channel monitoring for aircraft
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3399849 |
Lift and pitch control apparatus for aircraft
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3393882 |
Coupling device for v. t. o. l. aircraft
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3335980 |
Aircraft landing system including desensitization means
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