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WO2012081926A2 - Long-endurance airplane using wind power energy - Google Patents

Long-endurance airplane using wind power energy Download PDF

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Publication number
WO2012081926A2
WO2012081926A2 PCT/KR2011/009695 KR2011009695W WO2012081926A2 WO 2012081926 A2 WO2012081926 A2 WO 2012081926A2 KR 2011009695 W KR2011009695 W KR 2011009695W WO 2012081926 A2 WO2012081926 A2 WO 2012081926A2
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WO
WIPO (PCT)
Prior art keywords
long
wind
main body
present
airplane
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Application number
PCT/KR2011/009695
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French (fr)
Korean (ko)
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WO2012081926A3 (en
Inventor
김철완
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한국항공우주연구원
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Publication of WO2012081926A2 publication Critical patent/WO2012081926A2/en
Publication of WO2012081926A3 publication Critical patent/WO2012081926A3/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D41/00—Power installations for auxiliary purposes
    • B64D41/007—Ram air turbines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D27/00—Arrangement or mounting of power plants in aircraft; Aircraft characterised by the type or position of power plants
    • B64D27/02—Aircraft characterised by the type or position of power plants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D27/00—Arrangement or mounting of power plants in aircraft; Aircraft characterised by the type or position of power plants
    • B64D27/02—Aircraft characterised by the type or position of power plants
    • B64D27/24—Aircraft characterised by the type or position of power plants using steam or spring force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
    • B64U50/00—Propulsion; Power supply
    • B64U50/10—Propulsion
    • B64U50/13—Propulsion using external fans or propellers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
    • B64U50/00—Propulsion; Power supply
    • B64U50/10—Propulsion
    • B64U50/19—Propulsion using electrically powered motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
    • B64U10/00—Type of UAV
    • B64U10/25—Fixed-wing aircraft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
    • B64U50/00—Propulsion; Power supply
    • B64U50/30—Supply or distribution of electrical power
    • B64U50/34—In-flight charging
    • B64U50/36—In-flight charging by wind turbines, e.g. ram air turbines [RAT]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2220/00—Application
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/90—Mounting on supporting structures or systems
    • F05B2240/92—Mounting on supporting structures or systems on an airbourne structure
    • F05B2240/921—Mounting on supporting structures or systems on an airbourne structure kept aloft due to aerodynamic effects
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/60—Efficient propulsion technologies, e.g. for aircraft

Definitions

  • the present invention relates to a long-term air wind plane, and more particularly to a long-term air wind plane that saves energy consumption by using the wind energy in a long-term air drone that requires a long time operation at a relatively low flight speed compared to a general aircraft It is about.
  • the purpose of telecommunications relays surveillance information for defense security, monitor the environment or weather, monitor forests, or perform observations to increase GPS.
  • Long enduarance drones have been developed and used. Such long-term drones can perform various observation and search operations that can be performed by using satellites in a much cheaper equipment, and thus, their use is expanding.
  • the long-term drone is not required to be directly occupied by a person, but only to be equipped with observation and communication equipment. Therefore, long-term drones can be manufactured in a small size, and, of course, they can be operated with much less power than a large aircraft that generally carries people or cargo. Under these conditions, long-term drones have been steadily researched to use environmentally friendly and fuel-free energy such as solar energy.
  • the present invention has been made to solve the problems of the prior art as described above, the object of the present invention is to provide a long-term air wind plane using wind energy as a power source.
  • the main body 110 is formed in the shape of an airplane;
  • a thrust generator 120 provided in the main body 110 and configured to include a motor 121 and a propeller 122 to generate thrust;
  • a wind turbine 130 provided in the main body 110 to produce electric power by using wind power and to transmit it to the thrust generator 120; Characterized in that comprises a.
  • the wind plane 100 is characterized in that the speed is determined by the following equation.
  • the wind energy can be used as a power source when compared to the prior art which uses solar energy as a power source in a long-haul drone. Therefore, the solar energy can be partially or completely replaced at night and at high latitudes. There is a big advantage to that. That is, the present invention can be used even in environmental conditions where solar energy is difficult to use, and thus the use range of the long-term flight drone can be further expanded.
  • Wind turbine 100 of the present invention is a small drone for the purpose of long-term air as described above, as shown is made to include the body 110, the thrust generator 120 and the wind turbine 130 do. Hereinafter, each part will be described in more detail.
  • the main body 110 is formed in a plane shape similar to a general long-term drone drone.
  • Long-term flight drones are used for various observations and searches as described above, and are generally made as light as possible to enable long-term operation.
  • the main body 110 should, of course, be provided with observation equipment, search equipment, and communication equipment (for transmitting and receiving information) to perform the role as a long-term drone.
  • the technology for the power source, the rest of the equipment for observation, search, communication, etc. may employ a technique used in the conventional long-term flight drone bar, detailed description thereof will be omitted here.
  • the thrust generator 120 is provided in the main body 110, and includes a motor 121 and a propeller 122 to generate a thrust. That is, as shown, it is composed of a motor 121 and a propeller 122 connected thereto, the motor 121 is supplied with power from a power source to rotate the propeller 122 to thrust the wind plane 100 Will be authorized.
  • a feature of the invention resides directly in the wind turbine 130.
  • the wind turbine 100 of the present invention uses the energy generated by the wind turbine 130 as a power source. That is, the wind turbine 130 is provided in the main body 110 to produce electric power by using the wind power to deliver to the drive unit 120, so that the airplane of the present invention can be driven using the wind power.
  • Wind-powered cars have been known to transmit the rotational force from wind turbines to wheels and run at speeds of more than 50% of wind speed.
  • the wind turbine is installed on the upper part of the racing car to obtain the rotational force, and then the vehicle is driven by using the wind turbine.
  • a speed of about 5 m / s was obtained when the front wind was 9.3 m / s.
  • Theoretical principles related to driving a vehicle are as follows.
  • A rotor area of wind turbine
  • a C drag area of main body
  • V wind speed
  • ⁇ drive train efficiency
  • the use range can be extended to an area where sunlight is not collected well as compared to the long-term drone using the solar energy.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Wind Motors (AREA)

Abstract

The present invention relates to a long-endurance airplane using wind power energy. The objective of the present invention is to provide a long-endurance airplane using wind power energy as a power source. The long-endurance airplane using wind power energy according to the present invention is a long-endurance small unmanned airplane, and comprises: a main body (110) having an airplane shape; a propelling force generating unit (120) which is arranged in the main body, and which includes a motor (121) and a propeller (122) to generate propelling force; and a wind turbine (130) which is mounted on the main body (110) to generate electric power using wind power and transmit the generated electric power to the propelling force generating unit (120).

Description

장기 체공 풍력 비행기Long term flight wind plane
본 발명은 장기 체공 풍력 비행기에 관한 것으로, 보다 상세하게는 일반적인 항공기에 비해 상대적으로 비행 속도가 낮은 대신 장시간 운항이 필요한 장기 체공 무인기에 풍력 에너지를 이용하도록 함으로써 에너지 소비를 절약하는 장기 체공 풍력 비행기에 관한 것이다.The present invention relates to a long-term air wind plane, and more particularly to a long-term air wind plane that saves energy consumption by using the wind energy in a long-term air drone that requires a long time operation at a relatively low flight speed compared to a general aircraft It is about.
일반적으로 사람이나 화물을 운반하는 항공기와는 달리, 국방 안보용 정찰 감시용 정보를 원격 통신 중계하거나, 환경 또는 기상을 모니터링하거나, 삼림을 관측하거나, GPS를 증대하기 위하여 관측을 수행하는 등의 목적을 위하여 장기 체공(long enduarance) 무인기가 개발되어 사용되고 있다. 이러한 장기 체공 무인기는 종래에 인공위성을 사용하여야 수행할 수 있었던 각종 관측 및 탐색 작업을 훨씬 저렴한 장비로 수행할 수 있어 그 사용이 확대되고 있는 실정이다.Unlike aircraft that carry people or cargo in general, the purpose of telecommunications relays surveillance information for defense security, monitor the environment or weather, monitor forests, or perform observations to increase GPS. Long enduarance drones have been developed and used. Such long-term drones can perform various observation and search operations that can be performed by using satellites in a much cheaper equipment, and thus, their use is expanding.
장기 체공 무인기는 상술한 바와 같이 사람이 직접 탑승하는 것이 아니며 관측 및 통신 장비만을 탑재하면 된다. 따라서 장기 체공 무인기는 소형으로 제작이 가능하며, 물론 이에 따라 일반적으로 사람이나 화물을 운반하는 대형의 항공기에 비해 상대적으로 훨씬 적은 동력으로 운항이 가능하다. 이러한 조건에 따라 장기 체공 무인기에는 태양 에너지 등과 같은 친환경적이며 연료 등을 필요로 하지 않는 에너지를 이용하고자 하는 연구가 꾸준히 있어 왔다.As described above, the long-term drone is not required to be directly occupied by a person, but only to be equipped with observation and communication equipment. Therefore, long-term drones can be manufactured in a small size, and, of course, they can be operated with much less power than a large aircraft that generally carries people or cargo. Under these conditions, long-term drones have been steadily researched to use environmentally friendly and fuel-free energy such as solar energy.
현재 각 국가, 연구소, 회사 등에서 개발되고 있는 대부분의 장기 체공 무인기는 대부분 태양 에너지를 이용하도록 하고 있으며, 이에 대한 많은 연구가 이루어져 왔다. 현재 태양 에너지를 이용한 동력원이 상당히 우수한 해법으로 인정되고 있으나, 아직 해결해야 할 기술적 과제들이 많이 남아 있는 것이 사실이다. 한편 성층권 범위에서 운행되는 고고도 장기 체공 무인기의 경우에는 태양 에너지를 이용하는 것이 상당히 유리한 점이 있으나, 중고도 장기 체공 무인기의 경우 기상 상황 등에 따라 태양 에너지를 장시간 공급받지 못할 우려가 있는 등, 태양 에너지 이외의 다른 에너지를 이용하는 동력원에 대한 필요가 분명히 있는 것이 사실이다.Most of the long-term drones currently being developed in each country, research institute, company, etc. use solar energy, and much research has been done. Currently, solar-powered power sources are considered a very good solution, but there are still many technical challenges to be solved. On the other hand, high altitude long-haul drones that operate in the stratosphere are very advantageous in using solar energy, but mid- and long-term drones may not receive solar energy for a long time due to weather conditions. It is clear that there is a clear need for power sources that utilize other energy sources.
따라서, 본 발명은 상기한 바와 같은 종래 기술의 문제점을 해결하기 위하여 안출된 것으로, 본 발명의 목적은 풍력 에너지를 동력원으로 사용하는 장기 체공 풍력 비행기를 제공함에 있다.Accordingly, the present invention has been made to solve the problems of the prior art as described above, the object of the present invention is to provide a long-term air wind plane using wind energy as a power source.
상기한 바와 같은 목적을 달성하기 위한 본 발명의 장기 체공 풍력 비행기는, 장기 체공을 목적으로 한 소형 무인 비행기에 있어서, 비행기 형상으로 형성되는 본체(110); 상기 본체(110)에 구비되며, 모터(121) 및 프로펠러(122)를 포함하여 구성되어 추력을 발생시키는 추력 발생부(120); 상기 본체(110)에 구비되며, 풍력을 이용하여 전력을 생산하여 상기 추력 발생부(120)로 전달하는 풍력 터빈(130); 를 포함하여 이루어지는 것을 특징으로 한다.Long term air wind plane of the present invention for achieving the above object, in a small drone for the purpose of long-term air, the main body 110 is formed in the shape of an airplane; A thrust generator 120 provided in the main body 110 and configured to include a motor 121 and a propeller 122 to generate thrust; A wind turbine 130 provided in the main body 110 to produce electric power by using wind power and to transmit it to the thrust generator 120; Characterized in that comprises a.
이 때, 상기 풍력 비행기(100)는 하기의 식에 의하여 속도가 결정되는 것을 특징으로 한다.At this time, the wind plane 100 is characterized in that the speed is determined by the following equation.
Figure PCTKR2011009695-appb-I000001
Figure PCTKR2011009695-appb-I000001
(여기에서, U: 본체 속도, V: 바람 속도, CP: 전력 계수(power coefficient), CT: 추력 계수(thrust coefficient), μ: 구동렬 능률(drive train efficiency))(Here, U: body speed, V: wind speed, C P : power coefficient, C T : thrust coefficient, μ: drive train efficiency)
본 발명에 의하면, 장기 체공 무인기에 있어서 태양 에너지를 동력원으로 사용하던 종래기술과 비교하였을 때, 풍력 에너지를 동력원으로 사용할 수 있도록 하고 있기 때문에, 야간 및 고위도 지역에서 태양 에너지를 일부 또는 완전히 대체할 수 있게 하는 큰 장점이 있다. 즉 본 발명은 태양 에너지를 사용하기 어려운 환경 조건에서도 사용이 가능하기 때문에, 장기 체공 무인기의 사용 범위를 보다 확대할 수 있게 되는 것이다.According to the present invention, the wind energy can be used as a power source when compared to the prior art which uses solar energy as a power source in a long-haul drone. Therefore, the solar energy can be partially or completely replaced at night and at high latitudes. There is a big advantage to that. That is, the present invention can be used even in environmental conditions where solar energy is difficult to use, and thus the use range of the long-term flight drone can be further expanded.
물론 본 발명은 연료 등을 전혀 소비하지 않는 풍력 에너지를 사용하기 때문에, 친환경적인 에너지 사용이 이루어진다는 장점 또한 있음은 물론이다.Of course, since the present invention uses wind energy that consumes no fuel or the like, it is a matter of course that environmentally friendly energy is used.
도 1은 본 발명의 풍력 비행기.1 is a wind turbine of the present invention.
<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for main parts of the drawings>
100: (본 발명의) 풍력 비행기100: wind turbine (of the invention)
110: 본체 120: 추력 발생부110: main body 120: thrust generator
121: 모터 122: 프로펠러121: motor 122: propeller
130: 풍력 터빈130: wind turbine
이하, 상기한 바와 같은 구성을 가지는 본 발명에 의한 장기 체공 풍력 비행기를 첨부된 도면을 참고하여 상세하게 설명한다.Hereinafter, with reference to the accompanying drawings, a long-term airborne wind plane according to the present invention having the configuration as described above will be described in detail.
도 1은 본 발명의 풍력 비행기를 간략히 도시한 것이다. 본 발명의 풍력 비행기(100)는 상술한 바와 같이 장기 체공을 목적으로 한 소형 무인 비행기로서, 도시된 바와 같이 본체(110), 추력 발생부(120) 및 풍력 터빈(130)을 포함하여 이루어지게 된다. 이하에서 각부에 대하여 보다 상세히 설명한다.1 shows a simplified illustration of a wind turbine of the present invention. Wind turbine 100 of the present invention is a small drone for the purpose of long-term air as described above, as shown is made to include the body 110, the thrust generator 120 and the wind turbine 130 do. Hereinafter, each part will be described in more detail.
상기 본체(110)는 일반적인 장기 체공 무인기와 유사하게 비행기 형상으로 형성된다. 장기 체공 무인기는 상술한 바와 같이 각종 관측이나 탐색 등에 사용되는 것으로, 장시간 운행이 가능하도록 최대한 가볍게 만들어지는 것이 일반적이다. 구체적으로 위에서 기재하고 있지는 않으나, 상기 본체(110)에는 물론 당연히, 장기 체공 무인기로서의 역할을 수행하기 위한 관측 장비, 탐색 장비, (정보를 송수신하기 위한) 통신 장비 등이 구비되어 있어야 함은 당연하다. 본 발명에서는 장기 체공 무인기에서 특히 동력원에 대한 기술이므로, 나머지 관측, 탐색, 통신 등에 관한 장비는 종래의 장기 체공 무인기에 사용되는 기술을 채용하면 무방한 바, 여기에서는 상세한 설명을 생략한다.The main body 110 is formed in a plane shape similar to a general long-term drone drone. Long-term flight drones are used for various observations and searches as described above, and are generally made as light as possible to enable long-term operation. Although not specifically described above, it is obvious that the main body 110 should, of course, be provided with observation equipment, search equipment, and communication equipment (for transmitting and receiving information) to perform the role as a long-term drone. . In the present invention, in the long-term flight drone, in particular, the technology for the power source, the rest of the equipment for observation, search, communication, etc. may employ a technique used in the conventional long-term flight drone bar, detailed description thereof will be omitted here.
상기 추력 발생부(120)는 상기 본체(110)에 구비되며, 모터(121) 및 프로펠러(122)를 포함하여 구성되어 추력을 발생시킨다. 즉, 도시된 바와 같이 모터(121)와 이에 연결된 프로펠러(122)로 이루어져 있으며, 상기 모터(121)가 동력원으로부터 전력을 공급받아 상기 프로펠러(122)를 회전시킴으로써 상기 풍력 비행기(100)에 추력을 인가하게 된다.The thrust generator 120 is provided in the main body 110, and includes a motor 121 and a propeller 122 to generate a thrust. That is, as shown, it is composed of a motor 121 and a propeller 122 connected thereto, the motor 121 is supplied with power from a power source to rotate the propeller 122 to thrust the wind plane 100 Will be authorized.
본 발명의 특징은 바로 상기 풍력 터빈(130)에 있다. 본 발명의 풍력 비행기(100)는, 동력원으로서 상기 풍력 터빈(130)에서 발생되는 에너지를 이용하게 된다. 즉, 상기 풍력 터빈(130)은 상기 본체(110)에 구비되어 풍력을 이용하여 전력을 생산하여 상기 구동부(120)로 전달함으로써, 본 발명의 비행기가 풍력을 이용하여 구동될 수 있도록 하는 것이다.A feature of the invention resides directly in the wind turbine 130. The wind turbine 100 of the present invention uses the energy generated by the wind turbine 130 as a power source. That is, the wind turbine 130 is provided in the main body 110 to produce electric power by using the wind power to deliver to the drive unit 120, so that the airplane of the present invention can be driven using the wind power.
본 발명의 풍력 비행기(100)의 동작 원리에 대하여 보다 상세히 설명한다. 일반적으로 고도가 높아지면 바람의 세기가 증가하며, 이러한 바람의 세기는 일반적인 장기 체공 무인기의 순항 속도와 비슷한 정도가 된다. 만일 이러한 정도의 세기를 가지는 바람을 이기고 비행기가 전진한다면 비행기를 지나는 바람의 속도는 더 증가하여 비행에 필요한 양력을 발생할 수 있다.The operating principle of the wind turbine 100 of the present invention will be described in more detail. In general, higher altitudes increase wind strength, which is comparable to the cruising speed of a typical long-haul drone. If the aircraft moves forward with a wind of this magnitude, the speed of the wind passing through the airplane will increase further and generate the lift necessary for the flight.
현재 풍력을 이용한 비행기에 대한 기술은 전무하나, 풍력을 이용하는 자동차 기술에 대한 연구는 일부 이루어진 바 있다. 이를 통해 본 발명의 풍력 비행기의 동작 원리를 설명한다.At present, there is no technology for wind-powered airplanes, but some researches have been made on automotive technology. The operation principle of the wind plane of the present invention will be described.
풍력 자동차는 풍력 터빈에서 얻은 회전력을 바퀴에 전달하여 바람 속도의 50% 이상의 속도로 달릴 수 있다는 사실이 알려진 바 있다. 즉 경주용 자동차 상부에 풍력 터빈을 설치하여 회전력을 얻은 후 이를 이용하여 자동차를 구동하는데, 풍력 터빈의 블레이드에서 발생한 회전력을 전기 에너지로 바꾸지 않고 기계적인 장치를 이용하여 직접 바퀴를 구동함으로써, 실험 결과 정면풍이 9.3m/s 일 때 약 5m/s의 속도를 얻었다. 차량의 구동과 관련된 이론적인 원리는 아래와 같다.Wind-powered cars have been known to transmit the rotational force from wind turbines to wheels and run at speeds of more than 50% of wind speed. In other words, the wind turbine is installed on the upper part of the racing car to obtain the rotational force, and then the vehicle is driven by using the wind turbine. A speed of about 5 m / s was obtained when the front wind was 9.3 m / s. Theoretical principles related to driving a vehicle are as follows.
수학식 1
Figure PCTKR2011009695-appb-M000001
 Equation 1
Figure PCTKR2011009695-appb-M000001
여기에서, 각 기호의 정의는 다음과 같다.Here, the definition of each symbol is as follows.
A: 풍력 터빈의 로터 면적 AC: 본체의 드래그 면적(drag area)A: rotor area of wind turbine A C : drag area of main body
CP: 전력 계수(power coefficient) CT: 추력 계수(thrust coefficient)C P : power coefficient C T : thrust coefficient
CD: 항력 계수C D : drag coefficient
f: 마찰 계수(friction coefficient) g: 중력 상수f: friction coefficient g: gravity constant
M: 본체 질량 U: 본체 속도M: body mass U: body speed
V: 바람 속도 μ: 구동렬 능률(drive train efficiency)V: wind speed μ: drive train efficiency
ρ: 공기 밀도ρ: air density
이 때, 풍력 터빈 로터의 추력(CT)와 비교하여 본체의 항력(CD에 의해 결정)과 회전 시 발생되는 마찰 저항(f에 의해 결정)이 작다고 가정한 후 관계되는 항을 삭제하면 본체의 속도는 아래와 같이 표현된다.In this case, it is assumed that the drag (determined by C D ) and the frictional resistance (determined by f) generated during the rotation are small compared to the thrust (C T ) of the wind turbine rotor. The speed of is expressed as
수학식 2
Figure PCTKR2011009695-appb-M000002
 Equation 2
Figure PCTKR2011009695-appb-M000002
(여기에서, U: 본체 속도, V: 바람 속도, CP: 전력 계수(power coefficient), CT: 추력 계수(thrust coefficient), μ: 구동렬 능률(drive train efficiency))(Here, U: body speed, V: wind speed, C P : power coefficient, C T : thrust coefficient, μ: drive train efficiency)
상술한 바와 같은 풍력 자동차의 원리는 본 발명의 풍력 비행기에 그대로 적용 가능하며, 따라서 바람 속도의 50% 이상의 속도로 운항이 가능함을 이론적으로 확인할 수 있다. 수학식 2를 정리하여 본체 속도를 나타내면 다음과 같다.The principle of the wind vehicle as described above is applicable to the wind plane of the present invention as it is, it can be confirmed that the theoretically possible to operate at a speed of 50% or more of the wind speed. Summarizing Equation 2 to indicate the body speed is as follows.
수학식 3
Figure PCTKR2011009695-appb-M000003
 Equation 3
Figure PCTKR2011009695-appb-M000003
(여기에서, U: 본체 속도, V: 바람 속도, CP: 전력 계수(power coefficient), CT: 추력 계수(thrust coefficient), μ: 구동렬 능률(drive train efficiency))(Here, U: body speed, V: wind speed, C P : power coefficient, C T : thrust coefficient, μ: drive train efficiency)
본 발명은 상기한 실시예에 한정되지 아니하며, 적용범위가 다양함은 물론이고, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 본 발명이 속하는 분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형 실시가 가능한 것은 물론이다.The present invention is not limited to the above-described embodiments, and the scope of application of the present invention is not limited to those of ordinary skill in the art to which the present invention pertains without departing from the gist of the present invention as claimed in the claims. Of course, various modifications can be made.
이와 같이 본 발명에서는 장기 체공 무인기에 풍력 에너지를 이용하도록 함으로써, 종래에 태양 에너지를 이용하는 장기 체공 무인기에 비해 태양광이 잘 수집되지 않는 지역에까지 이용 범위를 확장할 수 있게 된다.As described above, in the present invention, by using the wind energy in the long-term drone, the use range can be extended to an area where sunlight is not collected well as compared to the long-term drone using the solar energy.

Claims (2)

  1. 장기 체공을 목적으로 한 소형 무인 비행기에 있어서,In a small drone for the purpose of long-term flight,
    비행기 형상으로 형성되는 본체(110);A main body 110 formed in an airplane shape;
    상기 본체(110)에 구비되며, 모터(121) 및 프로펠러(122)를 포함하여 구성되어 추력을 발생시키는 추력 발생부(120);A thrust generator 120 provided in the main body 110 and configured to include a motor 121 and a propeller 122 to generate thrust;
    상기 본체(110)에 구비되며, 풍력을 이용하여 전력을 생산하여 상기 추력 발생부(120)로 전달하는 풍력 터빈(130);A wind turbine 130 provided in the main body 110 to produce electric power by using wind power and to transmit it to the thrust generator 120;
    를 포함하여 이루어지는 것을 특징으로 하는 장기 체공 풍력 비행기.Long term air wind plane, characterized in that comprises a.
  2. 제 1항에 있어서, 상기 풍력 비행기(100)는The method of claim 1, wherein the wind plane 100
    하기의 식에 의하여 속도가 결정되는 것을 특징으로 하는 장기 체공 풍력 비행기.Long-term air wind power plane characterized in that the speed is determined by the following equation.
    Figure PCTKR2011009695-appb-I000002
    Figure PCTKR2011009695-appb-I000002
    (여기에서, U: 본체 속도, V: 바람 속도, CP: 전력 계수(power coefficient), CT: 추력 계수(thrust coefficient), μ: 구동렬 능률(drive train efficiency))(Here, U: body speed, V: wind speed, C P : power coefficient, C T : thrust coefficient, μ: drive train efficiency)
PCT/KR2011/009695 2010-12-17 2011-12-16 Long-endurance airplane using wind power energy WO2012081926A2 (en)

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