[특허]Main rotor rotational speed control for rotorcraft

Main rotor rotational speed control for rotorcraft 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G05D-001/00 B64C-027/82 B64C-027/10 B64C-027/12 B64C-027/14 B64C-013/04 B64C-013/18 G05D-001/08 B64C-013/50 B64C-027/57 G05D-001/02 B64C-027/00 B64D-039/00 B64D-039/06 B64C-027/80 B64D-035/06 F16H-037/02 B64C-027/51 B64C-027/52 B64C-027/32 B64C-027/33 B64C-027/473 B64C-027/48 B64C-027/16 B64C-001/00 B64C-019/00 B64C-027/54 B64C-027/78 B64C-027/467 B64C-007/00 B64D-045/02 F16D-013/52 F16D-013/72 F16D-013/74 B64C-027/08 G06F-019/00 F02C-009/28
출원번호	US-0508346 (2015-09-29)
등록번호	US-10167079 (2019-01-01)
국제출원번호	PCT/US2015/052802 (2015-09-29)
국제공개번호	WO2016/053944 (2016-04-07)
발명자 / 주소	Weiner, Steven D. Eadie, William J.
출원인 / 주소	SIKORSKY AIRCRAFT CORPORATION
대리인 / 주소	Cantor Colburn LLP
인용정보	피인용 횟수 : 0 인용 특허 : 142

초록 ▼

An aircraft includes an airframe having an extending tail, a counter rotating, coaxial main rotor assembly disposed at the airframe including an upper rotor assembly and a lower rotor assembly and a translational thrust system positioned at the extending tail and providing translational thrust to the airframe. A flight control computer is configured to control a main rotor rotational speed of the upper and the lower rotor assemblies of the main rotor assembly as a function of airspeed of the aircraft. A method of operating an aircraft includes retrieving a threshold main rotor rotational speed of the dual coaxial main rotor assembly and calculating an actual main rotor rotational speed according to an environment of the aircraft. The actual main rotor rotational speed is maintained to remain at or below the threshold main rotor speed according to an airspeed of the aircraft.

대표청구항 ▼

1. An aircraft comprising: an airframe having an extending tail;a counter rotating, coaxial main rotor assembly disposed at the airframe including an upper rotor assembly and a lower rotor assembly;a translational thrust system positioned at the extending tail and providing translational thrust to the airframe; anda flight control system including an engine controller configured to control a main rotor rotational speed of the upper and the lower rotor assemblies of the main rotor assembly as a function of airspeed of the aircraft to maintain rotor blade tip speed of the upper and lower rotor assemblies below a threshold rotor tip speed. 2. The aircraft of claim 1, wherein the flight control system includes a flight control computer configured to: obtain a threshold main rotor rotational speed; andmaintain the main rotor rotational speed at or below the threshold main rotor speed. 3. The aircraft of claim 2, wherein the threshold main rotor rotational speed is a function of airspeed of the aircraft and advancing rotor blade tip Mach number. 4. The aircraft of claim 3, wherein a maximum advancing rotor blade tip Mach number is 0.9 Mach. 5. The aircraft of claim 2, wherein the flight control computer further utilizes one or more of outside air temperature, wind speed and/or direction to determine the threshold main rotor rotational speed. 6. The aircraft of claim 1, wherein the flight control computer is configured to set the main rotor assembly to a slowed main rotor rotational speed when the airspeed exceeds a selected airspeed, the slowed main rotor rotational speed lower than a baseline main rotor rotational speed at an airspeed less than or equal to the selected airspeed. 7. The aircraft of claim 6, wherein the selected airspeed is about 200 Knots. 8. A method of operating an aircraft having a dual coaxial main rotor assembly and a translation thrust system, the method comprising: calculating a threshold main rotor rotational speed of the dual coaxial main rotor assembly at a flight control computer of a flight control system of the aircraft;calculating, via the flight control computer, an actual main rotor rotational speed according to an environment of the aircraft; andmaintaining, using an engine controller of the flight control system, the actual main rotor rotational speed to remain at or below the threshold main rotor speed according to an airspeed of the aircraft. 9. The method of claim 8, wherein the threshold main rotor rotational speed is a function of one or more of airspeed of the aircraft and advancing rotor blade tip Mach number. 10. The method of claim 9, wherein a maximum advancing rotor blade tip Mach number is 0.9 Mach. 11. The method of claim 8, further comprising utilizing one or more of outside air temperature, wind speed and/or direction to determine the threshold main rotor rotational speed. 12. The method of claim 8, further comprising setting the main rotor assembly to a slowed main rotor rotational speed when the airspeed exceeds a selected airspeed, the slowed main rotor rotational speed lower than a baseline main rotor rotational speed at an airspeed less than or equal to the selected airspeed. 13. The method of claim 12, wherein the selected airspeed is about 200 Knots.

이 특허에 인용된 특허 (142)

Welsh, William A., Active force generation system for minimizing vibration in a rotating system.
상세보기
Hill,Wayne; Tsimring,Lev S., Active vibration control system.
상세보기
Staple Alan E. (Stoke-sub-Hamdon GB2) MacDonald Bruce A. (Lower Odcombe GB2), Active vibration control systems.
상세보기
Nakaya Teruomi,JPX ; Okamoto Osamu,JPX ; Kuwano Naoaki,JPX ; Suzuki Seizo,JPX ; Sasa Shuichi,JPX ; Nakayasu Hidehiko,JPX ; Sagisaka Masakazu,JPX, Air active control aircraft using three dimensional true airspeed detection system.
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Rokuro Hosoda JP, Aircraft and torque transmission.
상세보기
Morgan, Brian Herman; Hagen, David LeRoy, Aircraft attitude control configuration.
상세보기
Thomassey, Lionel, Aircraft provided with a swiveling tail rotor, and an associated method.
상세보기
Karem, Abe, Aircraft with integrated lift and propulsion system.
상세보기
Mandai Harufumi,JPX ; Tsuru Teruhisa,JPX, Antenna apparatus having magnetic-current-type and electric-field type antenna.
상세보기
Manfredotti, Thomas; Sequera, Damien, Anti-vibratory device with rotary compensation weights.
상세보기
Nadkarni Arun A. (King County WA) Richardson Thomas M. (King County WA), Apparatus and methods for apportioning commands between aircraft flight control surfaces.
상세보기
Salesse-Lavergne, Marc, Automatic control device for a helicopter and automatic control system comprising such a device.
상세보기
Gold Phillip J. (Shelton CT) Lappos Nicholas D. (Milford CT) Adams Don L. (Fairfield CT) Wright Stuart C. (Woodbridge CT), Automatic turn coordination trim control for rotary wing aircraft.
상세보기
Rutherford John W. (Scottsdale AZ) O\Rourke Matthew (Newport News VA) McDonnell William R. (St. Louis MO) Smith Brian T. (Everett WA), Canard rotor/wing.
상세보기
Spridco Dale R. (Milwaukee WI), Centrifugally actuated wet plate clutch.
상세보기
Long, Charles E.; Norem, Dean A.; Weyl, Raymond N.; Reimers, Ricky D., Clutch system for rotary-wing aircraft with secondary thrust system.
상세보기
Brunken, Jr., John E., Co-rotating stacked rotor disks for improved hover performance.
상세보기
Rock, Eugene F., Coaxial helicopter.
상세보기
Brody, David E.; Gaffey, Troy M.; Rixen, Frank; Murray, Richard F., Coaxial rotor aircraft.
상세보기
Yao Samuel S. (Fountain Valley CA) Chu Samuel K. F. (Harbor City CA), Collective and cyclic in-mast pitch control system for a helicopter.
상세보기
Stille, Brandon L., Combination brake clutch drive system and rotary-wing aircraft using same.
상세보기
Scott,Mark Winfield, Compact co-axial rotor system for a rotary wing aircraft and a control system therefor.
상세보기
Piasecki, Frank N.; Greenjack, Andrew S.; Horn, Joseph F., Compound aircraft control system and method.
상세보기
Piasecki,Frank N.; Greenjack,Andrew S.; Horn,Joseph F., Compound aircraft control system and method.
상세보기
Piasecki, Frederick W., Compound aircraft with autorotation.
상세보기
Zuck Daniel R. (Sylmar CA), Compound helicopter with no tail rotor.
상세보기
Stille, Brandon L., Concentric rotor control system.
상세보기
Einthoven,Pieter G.; Morse,Channing S., Constant vertical state maintaining cueing system.
상세보기
Cooper Dean Earl (Trumbull CT) Klingloff Robert Fuller (Huntington CT), Control for helicopter having dual rigid rotors.
상세보기
Robinson ; Frank D., Control stick assembly.
상세보기
D'Anna, Frank P., Control system and method for rotor assembly.
상세보기
Haggerty Matthew K. (Milton MA) Burns Clay A. (Boston MA), Control system for aircraft.
상세보기
Darrow, Jr., David A.; Bertolotti, Fabio P.; Sbabo, Thomas L.; D'Anna, Frank P., De-rotation system for a counter-rotating, coaxial rotor hub shaft fairing.
상세보기
Eglin, Paul, Drive control and regulation method and system for a hybrid helicopter.
상세보기
Haggerty Matthew K. (25 Center St. Milton MA 02186) Burns Clay A. (2 Goodwin Pl. ; Apt. #1 Boston MA 02114), Dual control mechanism for aircraft.
상세보기
Welsh, William A., Dual frequency hub mounted vibration suppressor system.
상세보기
Welsh, William A., Dual higher harmonic control (HHC) for a counter-rotating, coaxial rotor system.
상세보기
Builta Kenneth E. (Euless TX) Ferguson ; III Samuel W. (Fort Worth TX), Electrically controlled elevator.
상세보기
Osder, Stephen S.; Thompson, Thomas L., Enhanced flight control systems and methods for a jet powered tri-mode aircraft.
상세보기
Roesch, Philippe, Fast hybrid helicopter with long range and an optimized lift rotor.
상세보기
Roesch, Philippe, Fast hybrid helicopter with long range and proportional drive to the rotor and the propeller.
상세보기
Roesch, Philippe, Fast hybrid helicopter with long range with longitudinal trim control.
상세보기
Kinkead, W. Douglas; Scott, Mark W., Flight control system for a hybrid aircraft in the lift axis.
상세보기
Shue, Shyhpyng Jack; Shillings, John J., Flight control system having a three control loop design.
상세보기
Sahasrabudhe, Vineet; Gold, Philip J., Fly-by-wire flight control system with electronic lead/lag damper algorithm.
상세보기
Rollet, Philippe, Flying control device for a rotorcraft.
상세보기
Iseman Walter J. (Rt. 1 Monroe Center IL 61052), Fuel system bubble dissipation device.
상세보기
Boczar, Bruce; Stiles, Lorren; Witiak, Peter T., Full authority fly-by-wire pedal system.
상세보기
Cottrell, Brian; Zalewski, George Jerzy; Kroeger, James, Gas turbine engine rotor tip clearance and shaft dynamics system and method.
상세보기
Meek Stanley Ronald,CAXITX V2K 3X8, Gyro stabilized triple mode aircraft.
상세보기
Schreiber, Thomas; Wintjen, Carsten; Rohn, Torsten, Helicopter.
상세보기
Fradenburgh Evan A. (Fairfield CT), Helicopter blade.
상세보기
de Simone Gary J. (Stratford CT), Helicopter blade.
상세보기
Moffitt Robert C. (Seymour CT), Helicopter blade with a tip having a selected combination of sweep, taper and anhedral to improve hover efficiency.
상세보기
Mateus Ernesto (P.O. Box 5149 Quito ECX), Helicopter flight control and transmission system.
상세보기
Kennedy Dennis K. ; Straub Friedrich K. ; Hassan Ahmed A., Helicopter in-flight rotor tracking system, method, and smart actuator therefor.
상세보기
Elwood G. Norris, Helicopter propulsion and control system.
상세보기
Phelan Joseph P. (74 Alloway Rd. Parsippany NJ 07054) Treskov Yakov (2339 Hudson Ter. Fort Lee NJ 07024), Helicopter system with rotor blade antennas for landing assistance and for detection of electro-magnetic anomalies.
상세보기
Jolly, Mark R.; Meyers, Andrew D.; Mellinger, Daniel; Ivers, Douglas E.; Badre-Alam, Askari; Swanson, Douglas A.; Altieri, Russell E., Helicopter vibration control system and circular force generation systems for canceling vibrations.
상세보기
Jolly, Mark R.; Meyers, Andrew D., Helicopter vibration control system and rotating assembly rotary forces generators for canceling vibrations.
상세보기
David Constant V. (4952 Field St. San Diego CA 92110), Heliplane.
상세보기
Mouille Rene′L. (Sausset-les-Pins Aix-en-Provence FRX) Gallot Jacques R. (Sausset-les-Pins Port-Saint-Louis-du-Rhone FRX) Pouradier Jean-Marc E. (Port-Saint-Louis-du-Rhone FRX), High performance blade for helicopter rotor.
상세보기
Scott, Mark W.; Gatto, Stephen M., High speed compound rotary wing aircraft.
상세보기
Skonieczny Joseph P. (Madison CT) Fogler ; Jr. Donald L. (Milford CT) Gold Phillip J. (Shelton CT) Keller James F. (Media PA) Dryfoos James B. (Wallingford PA), High speed turn coordination for rotary wing aircraft.
상세보기
Jolly Mark R. ; Rossetti Dino J. ; Norris Mark A. ; Miller Lane R., Hybrid active-passive noise and vibration control system for aircraft.
상세보기
Ferren, Bran; Hillis, W. Daniel; Peterson, Michael Harvey, Imaging and display system to aid helicopter landings in brownout conditions.
상세보기
Greenfield, Aaron L.; Knag, John; Kubik, Stephen, Independent speed and attitude control for a rotary wing aircraft.
상세보기
Jensen William S. (Canoga Park CA) Ng David (Arcadia CA), Inertia force generating device.
상세보기
Zack, David W.; Chapkovich, John; Fitts, Richard A., Infrared suppression system.
상세보기
Yates, Travis L.; Linton, Bradley D., Integrated aircraft flight control units.
상세보기
Kunz Bernard P. (4190 Hanover Ave. Boulder CO 80303), Lift generating method and apparatus for aircraft.
상세보기
Wulff, Ole; Geiger, Derek, Lift offset management and control systems for coaxial rotorcraft.
상세보기
Brick Rowan O. ; Meyer Cathleen A., Lighting protection for electrically conductive or insulating skin and core for honeycomb structure.
상세보기
Gold Phillip J. (Shelton CT) Faull Walter R. (Bethlehem CT), Low speed turn coordination for rotary wing aircraft.
상세보기
Glatfelter Edward W. (Newton Square PA), Low vibration helicopter rotor.
상세보기
Yamakawa Eiichi,JPX ; Kondo Natsuki,JPX ; Nishimura Hiroki,JPX, Low-noise level landing apparatus and system for helicopters.
상세보기
Cheney ; Jr. Marvin C. (Glastonbury CT), Matched stiffness rotor flexbeam and blade system.
상세보기
Wildschek, Andreas, Method and apparatus for minimizing dynamic structural loads of an aircraft.
상세보기
Skelly, John; Vo Hoang, Thien Phu, Method for predicting the dynamic behavior of an aircraft structure.
상세보기
Wendelsdorf, Joseph W.; Berry, Victor L., Method for suppressing vibration and acoustic signature in a tiltrotor aircraft.
상세보기
Eglin,Paul, Method for using a steerable tall fin to reduce the vibration generated on the fuselage of a helicopter.
상세보기
Eglin,Paul, Method for using a tiltable stabilizer to reduce vibration generated on the fuselage of a helicopter.
상세보기
Salesse-Lavergne, Marc; Queiras, Nicholas; Eglin, Paul, Method of assisted piloting of a rotary wing aircraft having at least one propulsion propeller, an assisted piloting device, and an aircraft.
상세보기
Eglin, Paul; Queiras, Nicolas; Barraco, André; Malburet, Francois, Method of controlling and regulating the deflection angle of a tailplane in a hybrid helicopter.
상세보기
Eglin, Paul, Method of controlling the wing flaps and horizontal stabilizer of a hybrid helicopter.
상세보기
Rischmuller, Michael; D'haeyer, Frederic, Method of piloting a multiple rotor rotary-wing drone to follow a curvilinear turn.
상세보기
Cornett, Alan G.; Meyers, David W.; DeMers, Robert E., Methods and systems for diminishing the effects of an acoustic signature of vehicles.
상세보기
Cherepinsky, Igor, Methods and systems for providing constant-feel, multi-axis tactile cues.
상세보기
John W. Hafer, Jr., Microwave blade tracker.
상세보기
Diaz, Rodolfo E., Multi-function magnetic pseudo-conductor antennas.
상세보기
Clendenin Ralph M. (Orlando FL) Freeman Raymond S. (Orlando FL), Optical target tracking and designating system.
상세보기
Karem, Abraham E., Optimum speed tilt rotor.
상세보기
Austen-Brown, John Frederick, Personal hoverplane with four tiltmotors.
상세보기
Parsche, Francis Eugene, Planar communications antenna having an epicyclic structure and isotropic radiation, and associated methods.
상세보기
Lauder, Timothy Fred, Planetary de-rotation system for a shaft fairing system.
상세보기
Lauder, Timothy Fred, Planetary de-rotation system for a shaft fairing system.
상세보기
Dobrzynski Werner M. (Wolfenbttel DEX), Propeller blades.
상세보기
Sparks, David, Rijke tube cancellation device for helicopters.
상세보기
Jolly, Mark R., Rotary wing aircraft rotating machinery vibration control system.
상세보기
Piasecki Frank N., Rotary wing aircraft supplementary power drive system.
상세보기
Arlton, Paul E; Arlton, David J, Rotary wing vehicle.
상세보기
Cabrera, Pedro L.; Schmaling, David N., Rotor blade folding system.
상세보기
Zierten, Daniel T., Rotor blade pitch control.
상세보기
Moffitt, Robert C.; Egolf, Thomas Alan; Beatty, Robert D.; Karpowich, John K.; Bagai, Ashish, Rotor blade tip planform.
상세보기
Bagai, Ashish; Kreuscher, Lauren, Rotor blade twist distribution for a high speed rotary-wing aircraft.
상세보기
Daniel A. Wachspress ; Todd R. Quackenbush, Rotor blade with optimized twist distribution.
상세보기
Carter, Jr.,Jay W.; Lewis,Jeffrey R., Rotor collective pitch VS Mu to control flapping and mast/rotor tilt to control rotor RPM.
상세보기
Cotton, Bryan Saxon; Tully, Jr., Thomas L.; Gmirya, Yuriy Z., Rotor drive and control system for a high speed rotary wing aircraft.
상세보기
van der Westhuizen, Jacob J.; White, Robert Owen, Rotor hub and blade root fairing apparatus and method.
상세보기
Bertolotti, Fabio P.; Scott, Mark W.; Wake, Brian E.; Egolf, T. Alan; McCormick, Duane C.; Usta, Ebru; Ochs, Stuart S., Rotor hub fairing system for a counter-rotating, coaxial rotor system.
상세보기
Bertolotti,Fabio P.; Scott,Mark W.; Wake,Brian E.; Egolf,T. Alan; McCormick,Duane C., Rotor hub fairing system for a counter-rotating, coaxial rotor system.
상세보기
Lovera Bruno (Cardano ITX) Pancotti Santino (Gallarate ITX), Rotor shaft with internal controls for helicopters.
상세보기
Arlton, Paul E., Rotor system for helicopters.
상세보기
Schmaling, David N.; Cabrera, Pedro L., Rotor system with pitch flap coupling.
상세보기
Fang, Austin; Lozano, Steven P.; Rozak, James N.; Drost, Marlene T., Rotor track and balance with improved linear optimization.
상세보기
Walliser, Eric W.; Nowak, Robert A., Rotor/wing dual mode hub fairing system.
상세보기
Roesch, Philippe, Rotorcraft control system.
상세보기
Petersen, Bruce L., Rotorcraft having coaxial counter-rotating rotors which produce both vertical and horizontal thrust and method of controlled flight in all six degrees of freedom.
상세보기
Cycon James P. (Orange CT) Schneider George S. (Hamden CT) Tenerowicz Gregory P. (Seymour CT), Servo control system for a co-axial rotary winged aircraft.
상세보기
Clary,Sylvain, Servo-control system for an unbalanced rotor vibrator.
상세보기
Wright Gregory P. (Milford CT) Adams Don L. (Fairfield CT), Speed and collective pitch bias of helicopter longitudinal cyclic pitch.
상세보기
Cabrera, Pedro L.; Poulin, Stephen V.; Federici, Francis D., Swash plate anti-torque mechanism.
상세보기
Nathan, Visvanathan Thanigai; Anandappan, Thanga, System and method for computing MACH number and true airspeed.
상세보기
Berson, Barry L.; Bialecki, Larry J.; Buck, Peter A.; Morgenstern, John M., System and method for controlling the acoustic signature of a device.
상세보기
Burrage, Robert Graham, Tilt-rotor aircraft.
상세보기
Cotton, Bryan S.; Arifian, Kenneth C.; Schweizer, Leslie; Cevette, Jeffrey L., Translational thrust system for a rotary wing aircraft.
상세보기
Corliss, McGregor Lee, Two-place, collective pitch and throttle control.
상세보기
Zientek,Thomas A., Unloaded lift offset rotor system for a helicopter.
상세보기
Schmaling, David N.; Cabrera, Pedro L., Upper rotor control system for a counter-rotating rotor system.
상세보기
Groen, David L., Use of auxiliary rudders for yaw control at low speed.
상세보기
Beavis Glenn C. (Oshkosh WI) Hensel Robert J. (Oshkosh WI), Vacuum bleed and flow restrictor fitting for fuel injected engines with vapor separator.
상세보기
Fradenburgh Evan A. (Fairfield CT) Davis S. Jon (Orange CT) Moffitt Robert C. (Seymour CT) Visintainer Joseph A. (Beacon Falls CT), Variable diameter rotor having an offset twist.
상세보기
Lappos,Nicholas D.; Karedes,Edward; Vinayak,Harsh; Gmirya,Yuriy, Variable speed gearbox with an independently variable speed tail rotor system for a rotary wing aircraft.
상세보기
Palcic, Peter Xavier; Garcia, Todd; Gmirya, Yuriy, Variable speed transmission for a rotary wing aircraft.
상세보기
Palcic, Peter Xavier; Garcia, Todd; Gmirya, Yuriy, Variable speed transmission for a rotary wing aircraft.
상세보기
Palcic,Peter Xavier; Garcia,Todd; Gmirya,Yuriy, Variable speed transmission for a rotary wing aircraft.
상세보기
Haynes, David F.; Williams, David L.; Smith, Michael R.; Pascal, Robert J.; Heverly, David E.; Lee, Taeoh, Variable stiffness support.
상세보기
McGeer, Brian T.; von Flotow, Andreas H., Variable-twist rotor blade controlled by hub pitch angle and rotational speed.
상세보기
Piasecki, Frederick W.; Piasecki, Frank N., Vectored thruster augmented aircraft.
상세보기
Cherepinsky, Igor; Skaggs, Michael R., Vertical speed and flight path command module for displacement collective utilizing tactile cueing and tactile feedback.
상세보기
Buscher Richard George (Woodland Hills CA) Carnevale Peter Eugene (Canoga Park CA), Weapon delivery system.
상세보기
Sankrithi, Mithra M. K. V.; Frommer, Joshua, Wing load alleviation methods and apparatus.
상세보기

IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

연합인증

Main rotor rotational speed control for rotorcraft 원문보기

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연합인증

Main rotor rotational speed control for rotorcraft 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

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이 특허에 인용된 특허 (142)

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IPC 상위 출원인

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