KR100385732B1 - Retractable Winglet - Google Patents

Retractable Winglet Download PDF

Info

Publication number
KR100385732B1
KR100385732B1 KR10-2000-0019187A KR20000019187A KR100385732B1 KR 100385732 B1 KR100385732 B1 KR 100385732B1 KR 20000019187 A KR20000019187 A KR 20000019187A KR 100385732 B1 KR100385732 B1 KR 100385732B1
Authority
KR
South Korea
Prior art keywords
wing tip
stage
unfolded
wing
vertical
Prior art date
Application number
KR10-2000-0019187A
Other languages
Korean (ko)
Other versions
KR20010095806A (en
Inventor
이종원
김응태
안석민
이상국
Original Assignee
한국항공우주연구원
이상국
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 한국항공우주연구원, 이상국 filed Critical 한국항공우주연구원
Priority to KR10-2000-0019187A priority Critical patent/KR100385732B1/en
Publication of KR20010095806A publication Critical patent/KR20010095806A/en
Application granted granted Critical
Publication of KR100385732B1 publication Critical patent/KR100385732B1/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64CAEROPLANES; HELICOPTERS
    • B64C3/00Wings
    • B64C3/38Adjustment of complete wings or parts thereof
    • B64C3/56Folding or collapsing to reduce overall dimensions of aircraft
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64CAEROPLANES; HELICOPTERS
    • B64C23/00Influencing air flow over aircraft surfaces, not otherwise provided for
    • B64C23/06Influencing air flow over aircraft surfaces, not otherwise provided for by generating vortices
    • B64C23/065Influencing air flow over aircraft surfaces, not otherwise provided for by generating vortices at the wing tips
    • B64C23/069Influencing air flow over aircraft surfaces, not otherwise provided for by generating vortices at the wing tips using one or more wing tip airfoil devices, e.g. winglets, splines, wing tip fences or raked wingtips
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00Aeronautics or air transport
    • Y02T50/10Drag reduction

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Toys (AREA)

Abstract

본 발명은 개방형 행글라이더, 초경량 비행기 등의 날개 끝에 쉽게 장착 및 분리할 수 있도록 하며, 날개끝 수직깃을 간편하게 접거나 펼칠 수 있도록 하는 접개들이식 날개끝 수직깃에 관한 것이다.The present invention relates to a foldable wing tip vertical feather to be easily mounted and detached at the wing tip of an open hang glider, ultralight airplane, and to easily fold or unfold the wing tip vertical feather.

기존의 접개들이식 날개끝 수직깃은 날개끝에 설치되거나 분리되도록 일체형으로 제작되어 있어서 분해해서 육로로 이동할 때 날개끝 수직깃이 다른 물건에 눌리거나 부딪쳐서 파손되기 쉽다.Conventional foldable wing tip vertical feathers are integrally manufactured to be installed or separated at the wing tip, so when disassembled and moved to the ground, the wing tip vertical feathers are easily damaged by being pressed or hit by other objects.

따라서 본 발명은 날개끝 마개(4)의 내부에 1단 표피(5)와 2단 표피(6) 및 3단 표피(3)를 여러 단계로 연속 설치하여 접혀지거나 펼쳐지도록 하되, 여러 단계로 설치되는 1단 표피(5)와 2단 표피(6) 및 3단 표피(7)는 접혀지거나 지지대(8)에 의하여 펼쳐지도록 하며, 지지대(8)는 하측으로 고정홀(10)이 형성된 고정대(9)를 날개끝 마개(4)의 고정홈(11)에 삽입되며 조립홀(12)의 외측에 설치된 나사공(13)에서 나사(14)로 고정되어 펼쳐지도록 하여 신속하게 접거나 펼칠 수 있고 접었을 때의 부피가 줄어들어 휴대가 간편하고 비행체를 분리하여 육로로 이동할 때 수직깃의 파손을 방지할 수 있는 것이다.Therefore, the present invention is to be folded or unfolded by continuously installing the first stage cuticle 5 and the second stage cuticle 6 and the third stage cuticle 3 in the interior of the wing tip stopper 4, but installed in several stages The first stage cuticle (5) and the second stage cuticle (6) and the third stage cuticle (7) are folded or unfolded by the support (8), the support (8) is fixed to the fixing hole (10) formed downward ( 9) is inserted into the fixing groove 11 of the wing tip stopper 4 and is fastened or unfolded by being fixed with the screw 14 in the screw hole 13 installed on the outside of the assembly hole 12 so as to be unfolded. It is easy to carry due to the reduced volume when folded, and can prevent breakage of the vertical feathers when moving overland by separating the aircraft.

Description

접개들이식 날개끝 수직깃{Retractable Winglet}Retractable Winglet Vertical Feathers {Retractable Winglet}

본 발명은 개방형 행글라이더, 초경량 비행기 등의 날개끝에 쉽게 장착 및 분리할 수 있도록 하며, 날개끝 수직깃을 간편하게 접거나 펼칠 수 있도록 하는 접개들이식 날개끝 수직깃에 관한 것이다.The present invention relates to a foldable wing tip vertical feather to be easily mounted and detached at the wing tip of an open hang glider, ultralight airplane, and to easily fold or unfold the wing tip vertical feather.

레져·스포츠용 개방형 행글라이더 또는 초경량 비행기의 날개끝 수직깃 (Winglet)은 비행체의 양력 증가와 항력 감소를 위해 고성능의 비행기에 장착되어 왔으며, 큰 날개가 뒤에 위치한 선미익형 항공기나 플라잉 윙(Flying Wing)의 날개끝 수직깃은 비행체의 방향성 유지에도 도움을 준다.Winglets on open hang glider or ultralight aircraft for leisure and sports have been mounted on high-performance airplanes for increased lift and drag drag, and a winged wing or flying wing with large wings behind it. The wing tip vertical feathers also help maintain the aircraft's orientation.

최근에는 개방형 행글라이더와 개방형 동력글라이더 등의 레져·스포츠용 항공기에도 날개끝 수직깃이 장착되고 있는 추세이다.Recently, the wing tip vertical feathers have been installed in leisure and sports aircraft such as open hang glider and open power glider.

레져·스포츠용 개방형 행글라이더와 초경량 비행기의 날개끝에 장착되는 날개끝 수직깃은 도 1 과 도 2 에서와 같이 비행체 날개(3)의 외측으로 날개끝 수직깃(1')을 설치하여 날개끝 수직깃(1')이 비행체 날개(3)에서 분리되도록 한다.Open wing glider for leisure and sports and wing tip vertical feathers mounted on the wing tip of the ultra-lightweight aircraft are provided with wing tip vertical feathers 1 'on the outside of the wing 3 as shown in Figs. Allow 1 'to be detached from the aircraft wing 3.

날개끝 수직깃(1')과 비행체 날개(3)가 조립되는 부분에는 매직 테이프(2)를 이용하여 조립시켜 사용하고, 보관 또는 이동시 날개끝 수직깃(1')을 분리하여 육로로 운반 및 보관하게 된다.The wing tip vertical feather 1 'and the wing 3 are assembled by using a magic tape 2, and the wing tip vertical feather 1' is separated and transported by land when stored or moved. Will be kept.

상기 행글라이더 또는 초경량 비행기의 날개끝 수직깃을 사용한 후에는 비행체 날개(3)에서 돌출된 날개끝 수직깃(1')을 분리하여 이동하게 될 때 날개끝 수직깃(1')이 일체형으로 형성되어 있다.After using the wing tip vertical feather of the hang glider or ultralight aircraft, the wing tip vertical feather 1 'is integrally formed when the wing tip vertical feather 1' protruding from the wing 3 is moved. have.

이러한 날개끝 수직깃은 원래의 형상을 접어 부피 또는 크기를 변경시킬 수 없어 이동하는데 많은 불편이 있으며, 운반체의 외부로 돌출 되어 다른 물체에 부딪쳐서 파손되거나 다른 물건에 눌려서 변형되는 경우가 자주 발생한다.These wing tip vertical feathers are inconvenient to move because they can not change the volume or size by folding the original shape, it is often protruded to the outside of the carrier to be damaged by hitting other objects or deformed by pressing on other objects.

따라서 파손으로 인한 수리비 등 경제적인 부담이 가중되고 비행계획에 차질을 가져오는 경우가 많다.As a result, economic burdens such as repair costs due to damages are increased, and the flight plan is often disrupted.

본 발명은 개방형 행글라이더 또는 초경량 비행기의 날개끝에 창작되는 날개끝 수직깃을 장착하여 비행장소로 이동하거나 또는 좁은 장소에 보관시 날개끝 수직깃을 여러 단계로 신속하게 접거나 펼칠 수 있도록 하는 것이다.The present invention is equipped with a wing tip vertical feathers that are created on the wing tip of an open hang glider or ultralight airplane to be able to quickly fold or unfold the wing tip vertical feathers in various stages when moving to a flight location or stored in a narrow place.

본 발명은 여러 단계로 접혀지는 수직깃은 접으면 부피가 훨씬 작아서 휴대가 간편하고 비행체를 분해해서 육로로 이동할 때 운반체의 외부로 돌출 되지 않아 다른 물체와의 충돌로 인한 파손을 방지할 수 있는 것이다.According to the present invention, the vertical feather folded in several stages is much smaller when folded, which is easy to carry and prevents damage due to collision with other objects because it does not protrude to the outside of the vehicle when the aircraft is disassembled and moved by land. .

본 발명은 비행체 날개의 외측으로 날개끝 수직깃을 매직 테이프로 조립 및 분리하도록 함에 있어서, 날개끝 마개의 내부에 1단 표피와 2단 표피 및 3단 표피를 여러 단계로 연속 설치하여 접혀지거나 펼쳐지도록 함을 특징으로 한다.The present invention is to assemble and separate the wing tip vertical feather with the magic tape to the outside of the wing of the wing, in the wing tip stopper to be folded or unfolded by continuously installing the first and second skins and three-stage skin in several stages. It is characterized by.

여러 단계로 설치되는 1단 표피와 2단 표피 및 3단 표피는 지지대에 의하여 접혀지거나 펼쳐지도록 하며, 지지대는 하측으로 고정홀이 형성된 고정대를 날개끝 마개의 고정홈에 삽입되며 조립홀의 외측에 설치된 나사공에서 나사로 고정되어 펼쳐지도록 함을 특징으로 하는 것이다.The 1st skin, 2nd skin and 3rd skin are installed in various stages so that they can be folded or unfolded by the support, and the support is inserted into the fixing groove of the end of the wing and inserted into the fixing groove of the wing tip stopper. It is characterized in that it is fixed by the screw in the screw hole to expand.

도 1 은 종래 접개들이식 날개끝 수직깃의 분리사시도Figure 1 is an exploded perspective view of the vertical feather tip vertical feathers

도 2 는 종래 접개들이식 날개끝 수직깃의 설치상태도Figure 2 is a state of installation of the conventional foldable wing tip vertical feathers

도 3 은 본 발명의 분리상태 사시도3 is an exploded perspective view of the present invention

도 4 는 본 발명의 설치상태 사시도4 is a perspective view of the installation state of the present invention

도 5 는 본 발명을 접은 상태의 사시도5 is a perspective view of a folded state of the present invention

도 6 은 본 발명의 설치상태 단면도Figure 6 is a cross-sectional view of the installation state of the present invention

도 7 은 본 발명의 설치상태 측단면도Figure 7 is a side cross-sectional view of the installation state of the present invention

도 8 은 본 발명의 지지대를 분리한 날개끝 마개의 저면도Figure 8 is a bottom view of the wing tip cap separating the support of the present invention

[도면의 주요 부분에 대한 부호의 설명][Description of Symbols for Main Parts of Drawing]

1, 1' : 날개끝 수직깃 2 : 매직 테이프1, 1 ': wing tip vertical feather 2: magic tape

3 : 비행체 날개 4 : 날개끝 마개3: wing wing 4: wing tip stopper

5 : 1단 표피 6 : 2단 표피5: 1st stage cuticle 6: 2nd stage cuticle

7 : 3단 표피 7' : 고정홈7: 3-stage outer skin 7 ': Fixing groove

8 : 지지대 9 : 고정대8: support stand 9: fixing stand

10 : 고정홀 11 : 고정홈10: fixing hole 11: fixing groove

12 : 조립홀 13 : 나사공12: assembly hole 13: screw hole

14 : 나사14: screw

본 발명은 레져·스포츠용 개방형 행글라이더 또는 초경량 비행기의 비행체 날개(3)에 창작되는 날개끝 마개(4)가 분리되어 육로 운송시 다른 물체와 충돌로 인하여 파손되는 것을 방지하고 좁은 장소에 보관이 용이하도록 한다.The present invention is separated from the wing tip stopper (4) created on the aircraft wing (3) of the open-type hang glider or ultra-lightweight airplane for leisure and sports to prevent damage due to collision with other objects during overland transport and easy storage in narrow places Do it.

비행체 날개(3)에 결합되는 날개끝 마개(4)에는 매직 테이프(2)를 사용하여 고정시키기 위한 결합 또는 분리를 간단하게 할 수 있도록 한다.Wing end stopper (4) coupled to the wing of the aircraft (3) so as to simplify the coupling or separation for fixing using the magic tape (2).

수직깃은 날개끝 마개(4)에서 여러개의 부품으로 분리하여 다단계로 결합 및 분리할 수 있도록 하는 것으로Vertical feathers are to be separated into several parts in the blade cap (4) to be combined and separated in multiple stages

날개끝 마개(4)의 상측으로 1단 표피(5)와 2단 표피(6) 및 3단 표피(7)로 분할되도록 한다.The upper end of the blade cap 4 is divided into a first stage cuticle 5, a second stage cuticle 6, and a third stage cuticle 7.

상기 날개끝 마개(4)의 하측에는 고정홈(11)을 형성하여 고정대(9)를 삽입할 수 있도록 하고 내부의 중앙으로 지지대(8)가 관통되는 조립홀(12)과 4개의 나사공 (13)이 설치된다.In the lower side of the blade cap 4, a fixing groove 11 is formed so that the holder 9 can be inserted therein and an assembly hole 12 and four screw holes through which the support 8 passes through the center thereof. 13) is installed.

고정홈(11)에 설치되는 고정대(9)는 4개의 고정홀(10)이 형성되어 나사(14)로 나사공(13)에 고정되도록 하며, 상측으로 돌출된 조립홀(12)에는 지지대(8)가 관통되어 수직깃(1)을 장착할 때 사용된다.The fixing stand 9 installed in the fixing groove 11 has four fixing holes 10 formed therein so as to be fixed to the screw hole 13 by the screws 14, and the supporting stand 12 is provided in the assembly hole 12 protruding upward. 8) is used to mount the vertical feather (1) through.

날개끝 마개(4)의 내부에는 1단 표피(5)가 삽입되어 안으로 밀어 넣어 접혀지거나 상측으로 돌출 되어진다.Inside the wing tip stopper (4), the first cuticle (5) is inserted and pushed in and folded or protruded upwards.

상기 1단 표피(5)의 내부에는 2단 표피(6)가 삽입되어 안으로 밀어 넣어 접혀지거나 상측으로 돌출 되어진다.Inside the first stage epidermis 5, the second stage epidermis 6 is inserted and is pushed in and folded or protrudes upward.

상기 2단 표피(6)의 내부에는 3단 표피(7)가 삽입되어 안으로 밀어 넣어 접혀지거나 상측으로 돌출 되어진다.Inside the two-stage skin 6, the three-stage skin 7 is inserted and pushed in to be folded or protruded upwards.

결국 본 발명은 날개끝 마개(4)의 내부에 1단 표피(5)와 2단 표피(6) 및 3단 표피(7)가 밀어 넣어져 도 5 와 같이 접혀진다.As a result, in the present invention, the first stage cuticle 5, the second stage cuticle 6, and the third stage cuticle 7 are pushed into the wing tip stopper 4 to be folded as shown in FIG.

접혀진 날개끝 수직깃(1)을 펴는 경우에는 지지대(8)를 조립홀(12)에 결합하여 밀어 넣으면 3단 표피(7)가 상승하면서 2단 표피(6)와 1단 표피(5)가 순서대로 상승하게 되며, 나사(14)로 고정홀(10)과 나사공(13)에 고정시키면 도 6 과 도 7 에서와 같이 펼쳐지고 매직 테이프(2)를 이용하여 비행체 날개(3)에 날개끝 마개 (4)를 조립하여 설치한다.In case of spreading the folded wing tip vertical feather (1), when the support (8) is pushed into the assembly hole 12 and pushed in, the three-stage skin (7) rises and the two-stage skin (6) and the first-stage skin (5) Ascending in order, and fixed to the fixing hole 10 and the screw hole 13 with the screw 14, as shown in Figs. 6 and 7 unfolds and the tip of the wing on the wing of the aircraft (3) using the magic tape (2) Assemble and install the cap (4).

이때 여러 단계로 분리하여 결합하는 표피는 경사면에 의하여 상측으로 펼쳐진 후 더 이상 상승하지 않고 고정된 위치를 제공하게 되며, 더욱 안정된 결합상태를 유지하기 위해서는 수직깃이 펼쳐지는 위치에서 고정되는 구조를 제공하여 펼쳐진 상태를 안정되게 유지할 수 있는 것이다.At this time, the skin that is separated and joined in several stages is unfolded upwards by the inclined surface and then provides a fixed position without further rising, and in order to maintain a more stable coupling state, it provides a structure that is fixed at the position where the vertical feathers are unfolded. It will be able to maintain a stable state.

이와 같이 펼쳐진 상태에서 비행체의 방향성 유지에 도움을 주게 되는 것이며, 날개끝 수직깃(1)이 접혀진 상태에서는 날개끝 마개(4)를 비행체 날개(3)에서 분리하여 좁은 장소에 보관하거나 비행장소로 육로 이동시 및 비행 후 운반체의 외부로 접개들이식 날개끝이 돌출 되지 않으므로 외부물체와의 충돌로 인한 파손을 방지할 수 있고 부피가 작아 보관이 용이해 안전한 운송 및 보관이 가능한 것이다.This helps to maintain the directionality of the aircraft in the unfolded state, and in the state that the wing tip vertical feather (1) is folded, separate the wing tip stopper (4) from the wing of the aircraft (3) to store in a narrow place or to the place of flight It is possible to prevent the damage caused by collision with external objects and to keep it safe due to its small volume, since the tip of the folding wing is not protruded to the outside of the vehicle during the land movement and after the flight.

본 발명은 개방형 행글라이더 또는 초경량 비행기의 날개끝에 창작되는 날개끝 수직깃을 장착하여 비행장소로 이동하거나 또는 좁은 장소에 보관시 날개끝 수직깃을 여러 단계로 신속하게 접거나 펼칠 수 있도록 하는 것이다.The present invention is equipped with a wing tip vertical feathers that are created on the wing tip of an open hang glider or ultralight airplane to be able to quickly fold or unfold the wing tip vertical feathers in various stages when moving to a flight location or stored in a narrow place.

본 발명은 여러 단계로 접혀지는 수직깃은 접으면 부피가 훨씬 작아서 휴대가 간편하고 비행체를 분해해서 육로로 이동할 때 운반체의 외부로 돌출 되지 않아 다른 물체와의 충돌로 인한 파손을 방지하고 용이하게 이동할 수 있는 것이다.According to the present invention, the vertical feather folded in several stages is much smaller when folded, which is easy to carry and does not protrude to the outside of the vehicle when the aircraft is disassembled and moved to the ground, preventing damage caused by collision with other objects and easily moving. It can be.

Claims (3)

비행체 날개(3)의 외측으로 날개끝 수직깃(1)을 매직 테이프(2)로 조립 및 분리하도록 함에 있어서,In assembling and detaching the wing tip vertical feather 1 to the outside of the wing 3 by magic tape 2, 상기 날개끝 마개(4)의 내부에 1단 표피(5)와 2단 표피(6) 및 3단 표피(3)를 여러 단계로 연속 설치하여 접혀지거나 펼쳐지도록 함을 특징으로 하는 접개들이식 날개끝 수직깃.Folding wings are characterized in that the first stage (5), the second stage (6) and the third stage (3) of the wing tip stopper (4) to be continuously folded or unfolded in several stages Vertical plumb. 제 1 항에 있어서, 여러 단계로 설치되는 1단 표피(5)와 2단 표피(6) 및 3단 표피(7)는 접혀지거나 지지대(8)에 의하여 펼쳐지도록 함을 특징으로 하는 접개들이식 날개끝 수직깃.2. The folding skin according to claim 1, characterized in that the first and second skins (5) and the two and six skins (7), which are installed in several stages, are folded or unfolded by the support (8). Wing tip vertical feathers. 제 2 항에 있어서, 지지대(8)는 하측으로 고정홀(10)이 형성된 고정대(9)가 날개끝 마개(4)의 고정홈(11)에 삽입되며 조립홀(12)의 외측에 설치된 나사공(13)에서 나사(14)로 고정되어 펼쳐지도록 함을 특징으로 하는 접개들이식 날개끝 수직깃.According to claim 2, wherein the support (8) is a support (9) having a fixing hole 10 formed in the lower side is inserted into the fixing groove (11) of the wing tip stopper (4) is installed on the outside of the assembly hole (12) Retractable wing tip vertical feathers, characterized in that to be unfolded fixed with screws (14) in the hole (13).
KR10-2000-0019187A 2000-04-12 2000-04-12 Retractable Winglet KR100385732B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR10-2000-0019187A KR100385732B1 (en) 2000-04-12 2000-04-12 Retractable Winglet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR10-2000-0019187A KR100385732B1 (en) 2000-04-12 2000-04-12 Retractable Winglet

Publications (2)

Publication Number Publication Date
KR20010095806A KR20010095806A (en) 2001-11-07
KR100385732B1 true KR100385732B1 (en) 2003-05-27

Family

ID=19663763

Family Applications (1)

Application Number Title Priority Date Filing Date
KR10-2000-0019187A KR100385732B1 (en) 2000-04-12 2000-04-12 Retractable Winglet

Country Status (1)

Country Link
KR (1) KR100385732B1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3963200A (en) * 1975-03-24 1976-06-15 Arnstein Bennett R Kite with a diverging wing struts with a center strut and a crossing-strut secured to both diverging struts and the center strut
JPH01293297A (en) * 1988-05-21 1989-11-27 Kazuaki Mizogami Glider and attaching and detaching device provided with attaching and detaching mechanism on part of wing in glider having flexible wing
US5072894A (en) * 1989-10-02 1991-12-17 Rockwell International Corporation Apparatus and method for increasing the angle of attack operating range of an aircraft
US5407153A (en) * 1991-02-25 1995-04-18 Valsan Partners System for increasing airplane fuel mileage and airplane wing modification kit
US5988563A (en) * 1997-12-30 1999-11-23 Mcdonnell Douglas Corporation Articulating winglets

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3963200A (en) * 1975-03-24 1976-06-15 Arnstein Bennett R Kite with a diverging wing struts with a center strut and a crossing-strut secured to both diverging struts and the center strut
JPH01293297A (en) * 1988-05-21 1989-11-27 Kazuaki Mizogami Glider and attaching and detaching device provided with attaching and detaching mechanism on part of wing in glider having flexible wing
US5072894A (en) * 1989-10-02 1991-12-17 Rockwell International Corporation Apparatus and method for increasing the angle of attack operating range of an aircraft
US5407153A (en) * 1991-02-25 1995-04-18 Valsan Partners System for increasing airplane fuel mileage and airplane wing modification kit
US5988563A (en) * 1997-12-30 1999-11-23 Mcdonnell Douglas Corporation Articulating winglets

Also Published As

Publication number Publication date
KR20010095806A (en) 2001-11-07

Similar Documents

Publication Publication Date Title
US9623969B2 (en) Multicopter with detachable wing
USD801222S1 (en) Vertical takeoff and landing flying automobile
US6776271B2 (en) Traveling case with erectly expanded case body
US5412554A (en) Compound lamp shade frame
USD461159S1 (en) Foldable wing aircraft
CN111409872B (en) Integrated separable connecting and mounting bracket suitable for deep space impactor
CN111099011A (en) Aircraft
US4586680A (en) Spring-erected telescopic wing support structure
KR100385732B1 (en) Retractable Winglet
KR100393422B1 (en) Squeezable Winglet
KR102186048B1 (en) Drones with rotating folding wings
CN106314802A (en) Parachute bay device for unmanned aerial vehicle and unmanned aerial vehicle
CN113008086B (en) Dimensional folding structure of grid wing
US4568044A (en) Wing housing and cover release assembly for self-erecting wing
US20210016194A1 (en) Rocket with landing cabin
USD808861S1 (en) Amphibious unmanned vertical takeoff and landing flying motorcycle
CN214084721U (en) Collapsible unmanned aerial vehicle
CN207208455U (en) The multistage rotary folding wing aircraft of band self-locking in place
CN113002798B (en) Portable multi-posture rotor unmanned aerial vehicle system capable of being automatically retracted and extended and design method thereof
KR860000220B1 (en) Wing housing & cover release assembly for self-erecting wing
CN210000564U (en) wings capable of being assembled and separated quickly
CN110481737A (en) A kind of flexible foldable swing device applied to underwater robot
US20040102130A1 (en) Flyable model rocket
CN108725762B (en) Novel unmanned aerial vehicle undercarriage and unmanned aerial vehicle
CN112455645B (en) Collapsible unmanned aerial vehicle

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20101109

Year of fee payment: 8

LAPS Lapse due to unpaid annual fee