WO2010095261A1 - 機体姿勢調整構造 - Google Patents
機体姿勢調整構造 Download PDFInfo
- Publication number
- WO2010095261A1 WO2010095261A1 PCT/JP2009/053194 JP2009053194W WO2010095261A1 WO 2010095261 A1 WO2010095261 A1 WO 2010095261A1 JP 2009053194 W JP2009053194 W JP 2009053194W WO 2010095261 A1 WO2010095261 A1 WO 2010095261A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- aircraft
- airframe
- fuselage
- posture
- ground
- Prior art date
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 44
- 238000005096 rolling process Methods 0.000 claims abstract description 35
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
- B64C1/06—Frames; Stringers; Longerons ; Fuselage sections
- B64C1/061—Frames
- B64C1/062—Frames specially adapted to absorb crash loads
Definitions
- the present invention relates to an aircraft body attitude adjustment structure.
- an object of the present invention is to provide an aircraft attitude adjustment structure capable of adjusting the attitude of the aircraft tilted in the left-right direction when the aircraft is grounded.
- the aircraft attitude adjustment structure includes an attitude adjustment unit that adjusts the attitude of the aircraft using the ground reaction force that the aircraft receives when the aircraft is grounded.
- the attitude adjustment unit is configured such that the greater the rolling angle when the airframe contacts the ground, the greater the component of the ground reaction force received from the ground in the vertical direction of the airframe.
- the rolling angle is a rotation angle based on the longitudinal axis of the aircraft, that is, a tilt angle in the left-right direction of the aircraft.
- the greater the horizontal inclination of the aircraft the greater the vertical force of the ground reaction force that the posture adjustment unit receives from the ground.
- the component of the ground reaction force in the vertical direction of the aircraft acts as a force for returning the aircraft to the horizontal. Therefore, according to the present invention, it is possible to adjust the attitude of the aircraft tilted in the left-right direction when the aircraft is grounded.
- the attitude adjustment unit is preferably provided in a predetermined range from the bottom to the side of the fuselage of the aircraft, and the strength is preferably increased as the distance from the bottom increases.
- the posture adjustment unit has a higher strength as the distance from the bottom of the body increases.
- the posture adjustment unit becomes harder to deform. Therefore, as the rolling angle increases, the ground reaction force received from the ground by the posture adjustment unit is not absorbed and a large ground reaction force is generated. To do. Therefore, the larger the rolling angle when the aircraft is in contact with the ground, the greater the force to return the aircraft to the horizontal, and the aircraft's attitude can be adjusted effectively.
- the posture adjusting portion is composed of a member having higher strength as the distance from the bottom portion is larger.
- the posture adjustment unit is configured with a member having higher strength as the distance from the bottom of the body increases, the posture adjustment unit can have higher strength as the distance from the bottom increases. Therefore, the airframe posture adjusting function as described above is preferably realized.
- the attitude adjustment unit protrudes toward the front side of the fuselage of the fuselage, and has a protrusion that extends from the bottom to the side of the fuselage, and the protrusion extends from the bottom.
- the protrusion part protruded toward the surface side of the fuselage extends in a direction in which the angle formed with the front-rear direction line of the fuselage increases as the distance from the bottom of the fuselage increases.
- the attitude adjustment unit preferably has an airbag that can be deployed when the aircraft contacts the ground on the lower surfaces of the left and right main wings of the aircraft.
- the airbag that the attitude adjustment unit has on the lower surface of the main wing is deployed. Since the airbag is more strongly pressed against the ground as the rolling angle of the fuselage is larger, the component force in the vertical direction of the fuselage of the ground reaction force received from the ground by the posture adjustment unit is increased accordingly. Therefore, the attitude of the aircraft can be adjusted while reducing the impact on the aircraft.
- the airbag is provided closer to the fuselage than the central portion in the longitudinal direction of the main wing.
- the attitude of the aircraft tilted in the left-right direction can be adjusted when the aircraft contacts the ground.
- FIG. 2 is a cross-sectional view taken along the line II-II of the body posture adjustment structure of FIG. It is a figure which shows the state with a large rolling angle at the time of machine body grounding in 1st embodiment. It is the figure which looked at the nose part of the airframe from the D direction of FIG. It is a figure which shows the state with a small rolling angle at the time of machine body grounding in 1st embodiment. It is the figure which looked at the nose part of the body from the D direction of FIG. It is a figure which shows the relationship between the rolling angle
- (A) is a perspective view showing an airframe posture adjusting structure according to the second embodiment
- (b) is a cross-sectional view taken along the line BB. It is a figure which shows the relationship between the distance from the bottom part, and the direction where a protrusion part extends in the airframe attitude
- FIG. 1 is a perspective view showing an airframe posture adjusting structure according to the first embodiment
- FIG. 2 is a cross-sectional view taken along the line II-II in FIG.
- An aircraft body attitude adjustment structure 1 shown in FIGS. 1 and 2 is provided on the fuselage 2 of the airframe A, and adjusts the attitude of the airframe A tilted in the left-right direction when the airframe A is grounded.
- the airframe posture adjusting structure 1 includes a posture adjusting unit 10 for adjusting the posture of the airframe A.
- the posture adjustment unit 10 has a function of adjusting the posture of the airframe A using the ground reaction force received by the airframe A when the airframe A is grounded, and details thereof will be described later.
- the attitude adjustment unit 10 is provided in a predetermined range from the bottom to the side of the nose 3.
- the posture adjusting unit 10 is formed by stacking a plurality of members 11 to 14 made of different materials. As shown in FIG. 2, the posture adjusting unit 10 includes a bottom member 11, a first side member 12, a second side member 13, and a third side member 14 from the bottom of the nose 3 to the side. . These members are joined together to form the inner peripheral surface of the nose part 3.
- the strength of the posture adjusting unit 10 is increased as the distance from the bottom of the nose 3 is increased. That is, the posture adjustment unit 10 is configured by a member having higher strength as the distance from the bottom of the nose portion 3 is larger. More specifically, the strength is increased in the order of the bottom member 11, the first side member 12, the second side member 13, and the third side member 14.
- a member having relatively low strength such as foamed aluminum is used.
- an aluminum honeycomb or the like is used as the first side member 12.
- a member having relatively high strength such as a CFRP (carbon fiber reinforced plastics) honeycomb is used.
- a high-strength member such as a rigid CFRP is used.
- the attitude adjustment unit 10 that forms the inner peripheral surface of the nose part 3, for example, even if the engine is provided in the nose part 3 in a small propeller machine, the attitude adjustment unit 10 Does not interfere with engine installation.
- a shape in which the plate-like members extending in the width direction of the nose part 3 are laminated in order from the bottom without being formed as shown in FIG. also good.
- a thin plate-like outer plate S that covers the posture adjusting unit 10 is appropriately provided on the outer surface of the nose portion 3.
- an energy absorption structure (not shown) extending along the longitudinal direction of the fuselage 2 (hereinafter referred to as “EA (Energy Absorption) structure”) is provided at the bottom of the fuselage 2 of the fuselage A.
- This EA structure is for safely stopping the airframe A by absorbing impact energy due to the grounding while receiving the dynamic friction force from the ground when the body 2 of the airframe A is grounded.
- FIG. 3 is a diagram illustrating a state when the aircraft A provided with the aircraft attitude adjustment structure 1 is grounded.
- the rolling angle ⁇ of the airframe A is shown as an angle formed by the vertical direction line P and the vertical direction line V of the airframe A (the fuselage 2).
- FIG. 4 is a view of the nose of the aircraft as viewed from the direction D in FIG.
- the nose 3 of the aircraft A is first grounded as shown in FIG.
- the side members for example, the side members 13 and 14 shown in FIG. 2 are the ground. Facing the G side.
- the posture adjustment unit 10 receives the ground reaction force F from the ground G via the second side member 13 and the third side member 14.
- the members 11 to 14 constituting the posture adjusting unit 10 are not shown.
- the second side member 13 and the third side member 14 have higher strength than the first side member 12 and the bottom member 11, they are not easily deformed even when receiving the ground reaction force F, and the ground reaction force F is not easily absorbed. For this reason, as shown in FIG.3 and FIG.4, the big ground reaction force F arises, As a result, the component force FV of an up-down direction of a body becomes large. 3 and 4, the ground reaction force F is indicated by a virtual line, and the component force FV in the vertical direction and the component force FL in the longitudinal direction of the aircraft, which are component forces of the ground reaction force F, are indicated by solid lines. Show. Further, the component force in the left-right direction of the aircraft is not shown.
- the posture adjusting unit 10 has a function of adjusting the posture of the airframe A using the ground reaction force F received by the airframe A when the airframe A is grounded. Further, as the airframe A returns in the horizontal direction, the rolling angle ⁇ becomes smaller, and among the members constituting the attitude adjustment unit 10, the member close to the bottom comes to ground.
- the attitude adjustment unit 10 When the airframe A is grounded at a small rolling angle ⁇ as shown in FIG. 5, among the members constituting the attitude adjustment unit 10, members close to the bottom (for example, the first side member 12 and the bottom member 11 in FIG. 2) are the ground. Facing the G side. Then, the posture adjustment unit 10 receives the ground reaction force F from the ground G via the first side surface member 12 and the bottom member 11.
- the first side member 12 and the bottom member 11 are lower in strength than the second side member 13 and the third side member 14, when the ground reaction force F is received, wear, compression deformation, destruction, and the like occur.
- the bottom member 11 receives the ground reaction force F and deforms, the ground reaction force F is absorbed and reduced.
- the component force FV in the vertical direction of the machine body is also relatively small.
- FIG. 7 shows the relationship between the rolling angle ⁇ when the aircraft is grounded and the component force FV in the vertical direction of the aircraft.
- the component force FV in the vertical direction of the fuselage of the ground reaction force F received by the fuselage A changes according to the size of the rolling angle ⁇ . That is, the posture adjustment unit 10 is configured such that the component force FV of the ground reaction force F in the vertical direction of the aircraft increases as the rolling angle ⁇ when the aircraft A contacts the ground.
- a self-alignment action for adjusting the attitude of the machine body A in the horizontal direction works.
- a solid line indicates a case where the speed when the aircraft is grounded
- a broken line (lower curve) indicates a case where the speed when the aircraft is grounded is low.
- attitude adjustment unit 10 when the attitude of the airframe A is adjusted to be horizontal, an EA structure (not shown) provided at the bottom of the fuselage is grounded, and the impact energy is absorbed while receiving the dynamic friction force from the ground G. It can be stopped safely. That is, according to the attitude adjustment unit 10, the attitude of the airframe A tilted in the left-right direction can be adjusted, and the EA structure at the bottom of the airframe A can function effectively.
- the posture adjustment unit 10 is configured to move the vertical direction of the ground reaction force F received from the ground G as the rolling angle ⁇ when the aircraft A contacts the ground is increased.
- the component force FV is increased.
- the greater the horizontal inclination of the body A the greater the vertical force component FV of the ground reaction force F received by the posture adjustment unit 10 from the ground G.
- the component force FV of the ground reaction force F in the vertical direction of the body acts as a force for returning the body A to the horizontal. Therefore, according to the airframe attitude adjustment structure 1, when the airframe A is grounded, the attitude of the airframe A tilted in the left-right direction can be adjusted.
- the portion of the nose 3 that constitutes the tip of the fuselage 2 of the aircraft A is in contact with the ground G is a portion that is farther from the bottom.
- the posture adjustment unit 10 has a higher strength as the distance from the bottom of the nose portion 3 increases.
- the posture adjusting unit 10 becomes harder to deform, and the ground reaction force F received by the posture adjusting unit 10 from the ground G is not absorbed and a large ground reaction force F is generated. . Therefore, according to the airframe attitude adjustment structure 1 according to the present embodiment, the larger the rolling angle ⁇ when the airframe A is in contact with the ground, the greater the force that attempts to return the airframe A to the horizontal position. It can be adjusted effectively.
- the posture adjustment unit 10 is configured with a member having higher strength as the distance from the bottom of the nose portion 3 is larger. Therefore, the posture adjustment unit 10 has higher strength as the distance from the bottom is larger. Can be made. Therefore, the body posture adjustment function is preferably realized.
- the airframe attitude adjustment structure 1 since the attitude of the airframe A is adjusted using the ground reaction force F when the airframe is grounded, a large operating force can be obtained simultaneously with the grounding without using any additional power. . Further, since the horizontal position of the airframe A rotates in accordance with the position and size of the ground reaction force F, a special posture adjustment control is not required and the mechanism is highly reliable. Even when the speed of the airframe A is high, the posture adjustment function is exhibited by using the ground reaction force F that increases as the speed increases.
- FIG. 8 is a partially broken side view of the airframe posture adjusting structure according to the second embodiment.
- the attitude adjustment unit 21 of the aircraft attitude adjustment structure 20 shown in FIG. 8 differs from the attitude adjustment unit 10 according to the first embodiment shown in FIG. 1 in place of the plurality of members 11 to 14 on the surface side of the nose part 3. It differs in that it has a protruding portion 22 protruding toward the surface.
- the projecting portion 22 is provided so as to extend from the bottom portion of the nose portion 3 toward the side surface. Further, as shown in the cross-sectional view along the line BB in FIG. 8B, a plurality of the protruding portions 22 are arranged in parallel at a predetermined interval. Furthermore, the protrusion 22 extends in a direction in which the angle ⁇ formed with the front-rear direction line L of the nose part 3 is larger as the distance from the bottom of the nose part 3 is larger.
- FIG. 9 shows the relationship between the distance from the bottom of the nose portion 3 and the direction in which the projecting portion 22 extends in the airframe posture adjusting structure 20.
- the “distance” on the horizontal axis is not a linear distance between the lowermost part of the nose part 3 and each point on the protruding part 22 but a distance along the circumferential surface of the nose part 3.
- the airframe posture adjustment structure 20 As described above, when the airframe A is grounded at a large rolling angle ⁇ as shown in FIG. 3, a portion close to the side surface of the projecting portion 22 as shown in FIG. A ground reaction force F from the ground G is applied to a portion extending in a direction in which the angle ⁇ formed with the front-rear direction line L of 3 is large. If it does so, the component force FV of the machine body up-down direction of the ground reaction force F will become large because the protrusion part 22 becomes resistance. Therefore, the larger the rolling angle ⁇ when the aircraft A is in contact with the ground, the greater the force for returning the aircraft A to the horizontal, and the attitude of the aircraft A can be adjusted effectively.
- the angle ⁇ formed with the portion near the bottom of the protruding portion 22, that is, with the longitudinal line L of the nose portion 3 as shown in FIG. 5 A ground reaction force F is applied to the portion extending in the small direction. If it does so, the protrusion part 22 will not become big resistance, but the ground reaction force F becomes small compared with the case of FIG. As a result, the component force FV in the vertical direction of the machine body is also relatively small.
- the relationship between the rolling angle ⁇ and the component force FV in the vertical direction of the aircraft is the same as the relationship shown in FIG. Therefore, the self-alignment action for adjusting the posture of the airframe A in the horizontal direction works by the component force FV in the vertical direction of the airframe, so that the EA structure at the bottom of the airframe can function effectively.
- the protruding portion 22 since the protruding portion 22 is extended while changing the angle ⁇ , the resistance force by the protruding portion 22 increases when the rolling angle ⁇ is large, but this resistance force decreases.
- the posture is naturally adjusted in the horizontal direction in which the rolling angle ⁇ decreases.
- FIG. 12 is a front view of the airframe posture adjusting structure according to the third embodiment.
- the attitude adjustment unit 31 of the aircraft attitude adjustment structure 30 shown in FIG. 12 is different from the attitude adjustment units 10 and 21 according to the previous embodiment shown in FIGS. 32 in that it has 32.
- the nose portion 3 is not provided with a posture adjusting portion.
- the airbag 32 can be deployed when the airframe A is grounded.
- the airbag 32 is provided closer to the fuselage 2 than the central portion C of the main wing 4 in the longitudinal direction. More specifically, the airbag 32 is attached to a spar (not shown) that is a skeleton member of the main wing 4 at a location closer to the fuselage 2 than the central portion C in the longitudinal direction of the main wing 4.
- the airbag 32 is provided closer to the fuselage 2 than the central portion C in the longitudinal direction of the main wing 4, so the main wing 4 of the fuselage A is grounded and the tip is dropped. Even in such a case, the airbag 32 remains on the body 2 side without dropping off. Therefore, the body posture adjustment function is preferably realized.
- the airframe attitude adjustment structure 30 also has a self-alignment action that adjusts the attitude of the airframe A in the horizontal direction, and can effectively function the EA structure at the bottom of the airframe. Further, since the airbag 32 is provided on both the left and right main wings 4, even when the ground reaction force F acts on one airbag 32 and the airframe A tilts to the opposite side, the other airbag Appropriate posture adjustment is performed by the function of 32. Further, the impact applied to the passengers of the aircraft is mitigated by the impact absorbing action of the airbag 32.
- the adjustment of the rolling angle is different from the adjustment of the so-called pitching angle in which the nose is tilted up and down with respect to the left and right axes of the aircraft. It was difficult to obtain rotational force. According to the airframe posture adjustment structure 30, since the rotational force is obtained by the airbag 32, the rolling angle with high responsiveness can be adjusted.
- the posture adjustment unit 10 is formed of four types of members 11 to 14 made of different materials.
- the posture adjustment unit 10 may be formed of, for example, two types or three types of members.
- the posture adjusting unit 10 is not limited to a structure in which the strength is changed in stages using a plurality of members, but may be a structure in which the strength is continuously changed by changing the thickness, density, and the like of a single member.
- the attitude adjustment unit may be provided from the bottom part of the fuselage 2 to the side surface side behind the nose part 3.
- the airframe A is not only tilted forward and grounded from the nose 3 but also tilted in the left-right direction even when installed from the center or rear of the fuselage 2 without tilting forward.
- the attitude of Aircraft A can be adjusted.
- a body posture adjustment structure capable of adjusting the posture of a body tilted in the left-right direction.
Abstract
Description
図1は、第一実施形態に係る機体姿勢調整構造を示す斜視図であり、図2は、図1のII-II線断面図である。図1及び図2に示す航空機の機体姿勢調整構造1は、機体Aの胴体2に設けられ、機体Aが接地する際に、左右方向に傾いた機体Aの姿勢を調整するものである。この機体姿勢調整構造1は、機体Aの姿勢を調整するための姿勢調整部10を備えている。この姿勢調整部10は、機体Aが接地する際に機体Aが受ける地面反力を利用して機体Aの姿勢を調整する機能を有しているが、詳細については後述する。
図8は、第二実施形態に係る機体姿勢調整構造の一部破断側面図である。図8に示す機体姿勢調整構造20の姿勢調整部21は、図1に示した第一実施形態に係る姿勢調整部10とは、複数の部材11~14に代えて、機首部3の表面側に向けて突出した突出部22を有する点で異なっている。
図12は、第三実施形態に係る機体姿勢調整構造の正面図である。図12に示す機体姿勢調整構造30の姿勢調整部31は、図1及び図8に示した先の実施形態に係る姿勢調整部10,21とは、機体Aの左右の主翼4下面にエアバッグ32を有する点で異なっている。なお、この機体姿勢調整構造30では、機首部3には姿勢調整部は設けられていない。
Claims (6)
- 機体が接地する際に前記機体が受ける地面反力を利用して前記機体の姿勢を調整する姿勢調整部を備え、
前記姿勢調整部は、機体が接地する際のローリング角が大きいほど、前記地面反力の機体上下方向の分力が大きくなる構成とされていることを特徴とする、機体姿勢調整構造。 - 前記姿勢調整部は、前記機体の胴体における底部から側面側への所定範囲に設けられ、前記底部からの距離が大きいほど強度が高くされている、請求項1記載の機体姿勢調整構造。
- 前記姿勢調整部は、前記底部からの距離が大きいほど強度の高い部材で構成されている、請求項2記載の機体姿勢調整構造。
- 前記姿勢調整部は、前記機体の胴体の表面側に向けて突出し、前記胴体における底部から側面側に向かって延びる突出部を有し、
前記突出部は、前記底部からの距離が大きいほど、前記胴体の前後方向線となす角が大きい方向に延びている、請求項1記載の機体姿勢調整構造。 - 前記姿勢調整部は、前記機体の左右の主翼下面に、前記機体が接地する際に展開可能なエアバッグを有する、請求項1記載の機体姿勢調整構造。
- 前記エアバッグは、前記主翼の長手方向の中央部分よりも前記胴体寄りに設けられている、請求項5記載の機体姿勢調整構造。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2009/053194 WO2010095261A1 (ja) | 2009-02-23 | 2009-02-23 | 機体姿勢調整構造 |
US13/201,224 US20110297785A1 (en) | 2009-02-23 | 2009-02-23 | Airframe position adjusting structure |
JP2011500430A JPWO2010095261A1 (ja) | 2009-02-23 | 2009-02-23 | 機体姿勢調整構造 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2009/053194 WO2010095261A1 (ja) | 2009-02-23 | 2009-02-23 | 機体姿勢調整構造 |
Publications (1)
Publication Number | Publication Date |
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WO2010095261A1 true WO2010095261A1 (ja) | 2010-08-26 |
Family
ID=42633561
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PCT/JP2009/053194 WO2010095261A1 (ja) | 2009-02-23 | 2009-02-23 | 機体姿勢調整構造 |
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US (1) | US20110297785A1 (ja) |
JP (1) | JPWO2010095261A1 (ja) |
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DE102020133540B4 (de) * | 2020-12-15 | 2024-01-25 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Luftfahrzeug |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4382567A (en) * | 1981-01-22 | 1983-05-10 | Fredericks Victor L | Safety flotation device for aircraft |
US5398889A (en) * | 1994-02-22 | 1995-03-21 | Furon Company | Aircraft fuselage lining system |
US5765778A (en) * | 1995-01-19 | 1998-06-16 | Otsuka; Ayako | Flight vehicle with a safety device |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2711868A (en) * | 1952-10-25 | 1955-06-28 | Parker Kenneth | Flotation device for aircraft |
US3108924A (en) * | 1959-04-14 | 1963-10-29 | Adie George Mountford | Structural element |
US4298177A (en) * | 1979-11-09 | 1981-11-03 | Berlongieri John J | Aircraft safety apparatus |
GB8711352D0 (en) * | 1987-05-14 | 1987-07-15 | Woodville Polymer Eng | Aircraft-landing equipment |
US5899414A (en) * | 1997-07-25 | 1999-05-04 | Duffoo; Jose G. | Aircraft crash prevention system |
US6745662B2 (en) * | 2001-08-06 | 2004-06-08 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Cross cell sandwich core |
US7156033B2 (en) * | 2002-08-19 | 2007-01-02 | Floatlogic, Inc. | Inflating aircraft flotation device |
US7523891B2 (en) * | 2005-12-21 | 2009-04-28 | A-Hamid Hakki | Safety pre-impact deceleration system for vehicles |
-
2009
- 2009-02-23 JP JP2011500430A patent/JPWO2010095261A1/ja active Pending
- 2009-02-23 WO PCT/JP2009/053194 patent/WO2010095261A1/ja active Application Filing
- 2009-02-23 US US13/201,224 patent/US20110297785A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4382567A (en) * | 1981-01-22 | 1983-05-10 | Fredericks Victor L | Safety flotation device for aircraft |
US5398889A (en) * | 1994-02-22 | 1995-03-21 | Furon Company | Aircraft fuselage lining system |
US5765778A (en) * | 1995-01-19 | 1998-06-16 | Otsuka; Ayako | Flight vehicle with a safety device |
Also Published As
Publication number | Publication date |
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JPWO2010095261A1 (ja) | 2012-08-16 |
US20110297785A1 (en) | 2011-12-08 |
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