Patents by Inventor Charles W. Evans
Charles W. Evans has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6629023Abstract: A method for automating a landing maneuver for an aircraft, comprising the steps of generating an approach profile comprising an initial approach fix (IAF), a flight path, a landing decision point, a balked landing route, a pre-landing point, and a landing point, engaging an automated approach system to access the approach profile, receiving periodic position data of the aircraft, comparing the position data to the approach profile to compute a plurality of deviations each time the position data is received, outputting the plurality of deviations to a display, converting the plurality of deviations into a plurality of control commands, and maneuvering the aircraft in response to the control commands along the flight path.Type: GrantFiled: April 30, 2002Date of Patent: September 30, 2003Assignee: Sikorsky Aircraft CorporationInventors: Stephen H. Silder, Jr., Charles W. Evans, Christopher A. Thornberg
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Patent number: 6527225Abstract: A method for automating a takeoff maneuver for an aircraft, comprising the steps of generating a takeoff profile comprising a takeoff point, a flight path, and a takeoff decision point (TDP), engaging an automated takeoff system to access the takeoff profile, receiving periodic position data of the aircraft, comparing the position data to the takeoff profile to compute a plurality of deviations each time the position data is received, outputting the plurality of deviations to a display, converting the plurality of deviations into a plurality of control commands, and maneuvering the aircraft in response to the control commands along the flight path.Type: GrantFiled: April 30, 2002Date of Patent: March 4, 2003Assignee: Sikorsky Aircraft CorporationInventors: Stephen H. Silder, Jr., Charles W. Evans, Christopher A. Thornberg
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Patent number: 5948023Abstract: A monitoring and control system for a dual-engine helicopter for OEI flight operations includes a parametric indicator operative in response to sensor signals for monitoring an engine gas generator speed parameter N1 during dual-engine and OEI flight operations. The indicator includes a rotatable needle that provides an analog indication of the current value of the N1 parameter. For dual-engine flight operations, the indicator includes a first DE indicia defining a normal operating range for the N1 parameter, a second DE indicia that defines a precautionary operating range for the N1 parameter, and a DE indicium that defines a take off power limit for the N1 parameter.Type: GrantFiled: June 19, 1997Date of Patent: September 7, 1999Assignee: Sikorsky Aircraft CorporationInventors: Charles W. Evans, David L. Jenson, John M. Kronsnoble, Charles E. Greenberg
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Patent number: 5873546Abstract: A system and method for conducting one engine inoperative (OEI) flight procedures training in a dual-engine helicopter includes a multi-function OEI training switch that is operative to initiate OEI flight procedures training by selecting one of said engines as the single operative engine for OEI flight procedures training, and a training function module that is: (1) operative to establish suppressed 30-second, 2-minute, and maximum continuous OEI operating limits for selected engine operating parameters to limit the actual power provided by said powerplant system during OEI flight procedures training; and (2) operative to generate biasing factors to control the operation of the parametric indicators for the selected engine operating parameters during OEI flight procedures training.Type: GrantFiled: June 19, 1997Date of Patent: February 23, 1999Assignee: Sikorsky Aircraft CorporationInventors: Charles W. Evans, Karl W. Saal, Jr., Jeffrey L. Cole
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Patent number: 5853152Abstract: A collective detent system is incorporated in combination with the flight control system of a helicopter to enhance vertical takeoff flight operations of the helicopter.Type: GrantFiled: April 29, 1997Date of Patent: December 29, 1998Assignee: Sikorsky Aircraft CorporationInventors: Charles W. Evans, Jeffrey L. Cole, Jefferson H. Slayden
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Patent number: 5313778Abstract: A bleed air control system for an aircraft gas turbine engine operates in a fuel saving mode in response to operation of the aircraft in a steady-state cruise condition (215,350) within a threshold flight envelope (202,310) during steady-state engine operation above a threshold range. During operation in the fuel saving mode, a gas turbine engine compressor bleed valve (10) is closed. The rate of bleed valve closure is determined as a function of bleed valve position (12,20) and gas generator speed (26,30) at the instant the fuel savings mode is initiated.Type: GrantFiled: December 10, 1992Date of Patent: May 24, 1994Assignee: United Technologies CorporationInventors: David H. Sweet, Charles W. Evans
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Patent number: 4817046Abstract: Primary logic (116-128) for engine failure detection in a multi-engine aircraft is based on thresholds for engine torque (Q), gas generator speed (NG), power turbine inner stage temperature (T5), power turbine speed (NF), throttle setting (PLA), and throttle manipulation (PLADOT).Subroutines for return to dual engine operation (110), backup of the primary logic (200,300) and remaining engine failure (200) are disclosed.Type: GrantFiled: April 10, 1986Date of Patent: March 28, 1989Assignee: United Technologies CorporationInventors: Robert W. Rice, David H. Sweet, Charles W. Evans, Gregory P. Wright, James J. Howlett, Nicholas D. Lappos, Mark A. Johnston
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Patent number: 4756118Abstract: Method and apparatus for the mechanical destruction of members of the genus Solenopsis, the South American Fire Ant, by the introduction of intense heat, vapor, insecticides, and/or steam directly into the colony by incorporating the use and application of specific compounds and mixtures of hydrocarbons, pyrethroids, insecticides, oxidizing agents, and/or vaporizing liquids, injected into the individual ant colonies by a variety of methods, including a pressurizing injection gun, with or without a heating attachment. The device is designed to obtain the proper penetration of the Imported Fire Ant colony in order to rapidly and totally infuse the entire chamber area, as well as the lateral foraging tunnels, with a thermal vapor (fog) containing an insecticide known to be lethal to Formicoidea (ants). Additionally, upon cooling, the vapor recondenses into a residue that has a prolonged residual killing effect for continued control purposes.Type: GrantFiled: August 29, 1986Date of Patent: July 12, 1988Inventor: Charles W. Evans, II
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Patent number: 4577275Abstract: An improved flight director go-around mode adjusts the collective stick position in a closed loop to increase lift to a desired value. If the engagement airspeed is below the maximum rate of climb airspeed, the airspeed is increased towards the maximum rate of climb airspeed at a moderate rate. When the maximum rate of climb airspeed is attained, or if the engagement airspeed is at least the maximum rate of climb airspeed, and the rate of climb is satisfactory, the airspeed is maintained. If the engagement airspeed is greater than the maximum rate of climb airspeed and the desired rate of climb is not achieved within ten seconds, the airspeed is decreased towards the maximum rate of climb airspeed. Heading or course is automatically maintained when go-around is engaged.Type: GrantFiled: May 31, 1983Date of Patent: March 18, 1986Assignee: United Technologies CorporationInventors: Don L. Adams, Charles W. Evans, Stuart C. Wright
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Patent number: 4399506Abstract: Inhibit means prevents a store-in-cache (SIC) from requesting or receiving any line fetch from MS when a clear line (CL) command is issued by a CPU to main storage (MS).Two CPU modes are provided: (1) an initial storage validation mode and (2) an instruction processing mode. The system operator controls the first mode so that a CPU can execute the CL command during system initialization without any prior data fetch from MS. In the second mode, the CL command is executed as a component of a program instruction fetched from MS that can clear a block in main storage.In a multiprocessor (MP), the CL command by any CPU requests a line store of pad data into an addressed line in MS only after each other SIC copy directory is searched and any found conflicting line is invalidated. Line castout to MS is prohibited for a conflicting line found in a cache by the CS command, which would have been a normal operation for other types of CPU commands.Type: GrantFiled: October 6, 1980Date of Patent: August 16, 1983Assignee: International Business Machines CorporationInventors: Charles W. Evans, Frederick O. Flusche, Benedicto U. Messina, Ethel L. Richardson, James R. Robinson, Joseph A. Wetzel
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Patent number: 3958227Abstract: A branch-address translation register (BAXR) is loaded by a current or a prior control word field. A word selection decoder circuit receives the BAXR outputs and combines them with machine-status signals to generate a word selection signal for selecting a control word from a currently accessed branch group in the control store. A BAXR switching circuit is also provided so that any control word can switch off the BAXR output and cause a control word selection without translation. The invention can obtain any required degree of addressing flexibility in microcode branch selection, i.e. from partial to total flexibility.Type: GrantFiled: September 24, 1974Date of Patent: May 18, 1976Assignee: International Business Machines CorporationInventor: Charles W. Evans