JP2001158398A - Brake system for emergency landing of aircraft - Google Patents

Brake system for emergency landing of aircraft

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Publication number
JP2001158398A
JP2001158398A JP34228699A JP34228699A JP2001158398A JP 2001158398 A JP2001158398 A JP 2001158398A JP 34228699 A JP34228699 A JP 34228699A JP 34228699 A JP34228699 A JP 34228699A JP 2001158398 A JP2001158398 A JP 2001158398A
Authority
JP
Japan
Prior art keywords
aircraft
fuselage
braking
emergency
emergency landing
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP34228699A
Other languages
Japanese (ja)
Inventor
Kenji Yamada
賢二 山田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Akebono Brake Industry Co Ltd
Original Assignee
Akebono Brake Industry Co Ltd
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 Akebono Brake Industry Co Ltd filed Critical Akebono Brake Industry Co Ltd
Priority to JP34228699A priority Critical patent/JP2001158398A/en
Publication of JP2001158398A publication Critical patent/JP2001158398A/en
Pending legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To assure a stable braking force and to inhibit the occurrence of a fire when braking by the hull of an aircraft is inevitable in an emergency. SOLUTION: This brake system 10 for the emergency landing of aircraft has a sliding friction member 12 made of a molybdenum(Mo) alloy and protrusively fixed to the emergency landing part of the underside of the body 1 of the aircraft.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、航空機の緊急着陸
時において、特に、格納車輪が出ない場合においても制
動性を確保できる緊急着陸用制動装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emergency landing braking device which can ensure braking performance during an emergency landing of an aircraft, especially when the stowage wheel does not come out.

【0002】[0002]

【従来の技術】旅客機などの航空機の緊急着陸時では、
格納車輪の制御装置の故障などによって、着陸時に車輪
が出なくなり、最悪の場合には、胴体着陸といった事態
にもなる。また、車輪が出ている状態の着陸でも、何ら
かの原因で最終的には胴体での制動を余儀なくされる場
合もある。機体設計では、このようなことも考慮に入れ
ることは当然であり、ある程度の剛性は確保されてい
る。
2. Description of the Related Art During an emergency landing of an aircraft such as a passenger aircraft,
Due to a failure of the storage wheel control device or the like, the wheels do not come out during landing, and in the worst case, a situation such as a fuselage landing may occur. In addition, even when landing with the wheels out, there may be a case in which ultimately braking with the fuselage is eventually required for some reason. In the fuselage design, it is natural to take this into consideration, and a certain degree of rigidity is secured.

【0003】[0003]

【発明が解決しようとする課題】しかしながら、上記の
ように航空機の緊急着陸時に、胴体での制動といった事
態となると、制動能力が格段に落ち、不安定なものとな
るので、滑走路からオーバーランしてしまうことにもな
る。また、滑走路面との摩擦によって、機体のその部分
の損傷から機体の大きな損傷にも繋がるという問題があ
る。そして、このようなオーバーランや機体の大きな損
傷となると、当然ながら、乗客に危険が及ぶこととな
る。更に、機体と滑走路面との摩擦部分から発熱、発火
することも多々あり、火災の危険性も大きくなるという
問題がある。
However, in the event of an emergency landing of the aircraft as described above, if a situation such as braking by the fuselage occurs, the braking capacity is significantly reduced and becomes unstable. It will also be done. Further, there is a problem that the friction with the runway surface leads to damage of the portion of the fuselage, which leads to serious damage of the fuselage. If such an overrun or a serious damage to the airframe occurs, the passengers are naturally at risk. Furthermore, there is also a problem that heat is often generated and ignited from a friction portion between the aircraft and the runway surface, and the risk of fire is increased.

【0004】本発明の目的は、上記問題点を解決するこ
とであり、航空機の緊急着陸時の胴体での制動といった
事態でも、安定した制動性を確保でき、火災の発生を抑
制できるようにした航空機の緊急着陸用制動装置を提供
するものである。
[0004] An object of the present invention is to solve the above-mentioned problems, and it is possible to secure stable braking performance and suppress the occurrence of a fire even in a situation where the fuselage brakes during an emergency landing of an aircraft. An emergency landing braking device for an aircraft is provided.

【0005】[0005]

【課題を解決するための手段】以上の目的を達成するた
め、本発明は、航空機の機体下部の緊急時接地部にモリ
ブデン(Mo)系合金製の摺動摩擦材を突出して固定し
た構成の航空機の緊急着陸用制動装置としている。この
摺動摩擦材が少なくとも胴体の先端下部と両主翼の最下
部とに配備されている構成とすることができる。また、
摺動摩擦材を構成するモリブデン(Mo)系合金が航空
機の機体との間に配置されるチタン合金層に熱間加圧接
合により一体化されている構成とすることができる。更
に、摺動摩擦材が断熱層を介して機体側に接合されてい
る構成とすることができる。
SUMMARY OF THE INVENTION In order to achieve the above objects, the present invention relates to an aircraft having a structure in which a sliding friction material made of a molybdenum (Mo) alloy is protruded and fixed to an emergency grounding portion at a lower part of an aircraft body. Emergency landing brake system. The sliding friction material may be provided at least at the lower end of the body and at the lowermost portion of both main wings. Also,
The molybdenum (Mo) -based alloy constituting the sliding friction material may be integrated with a titanium alloy layer disposed between the body and an aircraft body by hot pressing. Further, a configuration in which the sliding friction material is joined to the machine body via the heat insulating layer can be adopted.

【0006】すなわち以上の構成により、本発明にあっ
ては、緊急時などで胴体での制動といった事態を余儀な
くされた場合に、航空機の機体下部の緊急時接地部に配
置した摺動摩擦材が滑走路面に摺動接触することで、制
動効果を得ることができ、滑走路からのオーバーランや
機体の大きな損傷を抑制できる。また、本発明における
摺動摩擦材が、少なくとも胴体の先端下部と、両主翼の
最下部とに配備されていることによって、着地時には胴
体と両翼の三点に位置する制動装置で滑走路面に接触
し、安定な姿勢で制動を行うことが出来る。さらに本発
明における摺動摩擦材を構成するモリブデン(Mo)系
合金とチタン合金層とを熱間加圧接合により一体化する
構成により、良好な摩擦性能を確保できるとともに、制
動装置の軽量化を図ることもできる。また、本発明にお
ける摺動摩擦材は、断熱材を介して機体側に接合されて
いることにより、制動時に生ずる摩擦熱は機体側に伝わ
りにくく、機体の溶融や燃料への熱の伝搬を抑えること
ができるとともに、高融点のモリブデン(Mo)系合金
を摺動摩擦材に用いたことから、火花の発生も抑えるこ
とができ、火災事故を抑制できる。
That is, according to the present invention, in the present invention, when a situation such as emergency braking or the like is required in the fuselage, the sliding friction material disposed on the emergency contact portion under the fuselage of the aircraft slides. Sliding contact with the road surface can provide a braking effect and suppress overrun from the runway and major damage to the aircraft. Further, since the sliding friction material of the present invention is provided at least at the lower end of the fuselage and at the lowermost portion of the two main wings, at the time of landing, it comes into contact with the runway surface with braking devices located at three points of the fuselage and the two wings. It is possible to perform braking in a stable posture. Further, the structure in which the molybdenum (Mo) -based alloy and the titanium alloy layer constituting the sliding friction material according to the present invention are integrated by hot press bonding can ensure good friction performance and reduce the weight of the braking device. You can also. In addition, since the sliding friction material of the present invention is joined to the fuselage side via a heat insulating material, frictional heat generated during braking is less likely to be transmitted to the fuselage side, thereby suppressing melting of the fuselage and propagation of heat to the fuel. In addition, since a high melting point molybdenum (Mo) alloy is used for the sliding friction material, generation of sparks can be suppressed, and fire accidents can be suppressed.

【0007】ここで、モリブデン(Mo)系合金製摺動
摩擦材とは、融点2610℃程度、密度10.2g/cm
3 程度のモリブデン(Mo)またはモリブデン(Mo)
系合金であって、非磁性で靱性の高い耐熱性金属合金で
あり、例えば時速500Kmからの緊急着陸時に滑走路面
に摺動接触して制動力を生ずる。この時接触面は100
0〜2000℃までに昇温するが、この温度に対する耐
熱性が十分であり、またこのときの衝撃力に対する抵抗
力も十分なものとなっている。
Here, the sliding friction material made of a molybdenum (Mo) alloy is a melting point of about 2610 ° C. and a density of 10.2 g / cm.
About 3 molybdenum (Mo) or molybdenum (Mo)
This is a non-magnetic, highly tough, heat-resistant metal alloy. For example, during emergency landing at a speed of 500 km / h, it comes into sliding contact with the runway surface to generate a braking force. At this time, the contact surface is 100
Although the temperature rises to 0 to 2000 ° C., the heat resistance to this temperature is sufficient, and the resistance to the impact force at this time is also sufficient.

【0008】[0008]

【発明の実施の形態】以下、本発明の好ましい実施の形
態につき、添付図面を参照して詳細に説明する。図1は
本発明に係る実施の形態の制動装置を装備した双発型ジ
ェット旅客機の斜視図である。図2は図1の双発型ジェ
ット旅客機を下方から見た下面図である。図において、
双発型ジェット旅客機の胴体2の下部前方における緊急
時接地部分である前輪近傍位置には本発明に係る制動装
置10が固定されているとともに、両主翼3の下部に配
設されたエンジン4の最下部の緊急時接地部分には、同
じく制動装置10がそれぞれ固定されている。車輪制御
不能時など、胴体による緊急の制動時において、特に、
いずれの車輪も出せない状態でも、機体1はこれら制動
装置10により三点支持されることも可能で、各制動装
置10を摺動接触させた状態で滑走路などにソフトラン
ディングする場合、所望の制動力を与えることが可能で
ある。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a perspective view of a twin-engine jet airliner equipped with a braking device according to an embodiment of the present invention. FIG. 2 is a bottom view of the twin-engine jet airliner of FIG. 1 as viewed from below. In the figure,
A braking device 10 according to the present invention is fixed at a position near the front wheel, which is an emergency ground contact portion in front of the lower part of the fuselage 2 of the twin-engine jet airliner, and the engine 4 disposed below the two main wings 3. Similarly, a braking device 10 is fixed to a lower emergency contact portion. During emergency braking by the fuselage, such as when wheel control is not possible,
Even in a state where none of the wheels can be put out, the airframe 1 can be supported at three points by these braking devices 10. When soft landing on a runway or the like with each braking device 10 in sliding contact, It is possible to apply a braking force.

【0009】また、いずれかの車輪が出ない状態でも、
車輪の出ない側の設置部分に制動装置10を配設するこ
とで、制動力を与えることができる。なお、航空機によ
っては三点姿勢で着地する場合もあるので、尾翼付近の
胴体部下面にも制動装置10を追加配備することもでき
る。
Also, even if any of the wheels do not come out,
By arranging the braking device 10 on the installation portion on the side where the wheels do not come out, a braking force can be applied. In addition, since the aircraft may land in a three-point attitude, the braking device 10 can be additionally provided on the lower surface of the body near the tail fin.

【0010】図3は、本発明に係る実施の形態の制動装
置の詳細構造及び機体に対する取付構造を示す断面図で
ある。図において制動装置10は滑走路面5に近い順に
摺動摩擦材を構成するモリブデン(以下、Moと称す)
系合金プレート12と、このMo系合金プレート12の
上面に一体化されたバックアップ層としてのチタン合金
層14からなり、チタン合金層14の上面と機体1との
間に断熱材層16を介して複数のリベット18によりこ
れらを機体1に固定している。
FIG. 3 is a cross-sectional view showing a detailed structure of the brake device according to the embodiment of the present invention and a structure for mounting the brake device on an airframe. In the drawing, the braking device 10 is composed of molybdenum (hereinafter, referred to as Mo) constituting a sliding friction material in the order of being closer to the runway surface 5.
A system alloy plate 12 and a titanium alloy layer 14 as a backup layer integrated on the upper surface of the Mo system alloy plate 12. A heat insulating material layer 16 is interposed between the upper surface of the titanium alloy layer 14 and the machine body 1. These are fixed to the body 1 by a plurality of rivets 18.

【0011】Mo系合金プレート12は、前述のごと
く、融点2610℃程度、密度10.2g/cm3 程度の
MoまたはMo系合金であって、非磁性で靱性の高い耐
熱性金属合金であり、例えば時速500Kmからの緊急着
陸時に滑走路面に摺動接触して制動力を生ずる素材であ
り、進行方向に対してRが設定されることで、コンクリ
ートあるいはアスファルト製の滑走路面5に対する摺動
接触を十分な制動摩擦力と共にスムーズに行わせるよう
にしている。
As described above, the Mo-based alloy plate 12 is a Mo or Mo-based alloy having a melting point of about 2610 ° C. and a density of about 10.2 g / cm 3 , and is a nonmagnetic, highly tough, heat-resistant metal alloy. For example, it is a material that generates a braking force by sliding contact with the runway surface at the time of emergency landing from 500 km / h. By setting R with respect to the traveling direction, the sliding contact with the concrete or asphalt runway surface 5 is reduced. Smooth with sufficient braking friction.

【0012】チタン合金層14は、Mo系合金プレート
12の機体1の下部からの突出量を十分に確保するとと
もに、軽量化を図るもので、Mo系合金プレート12の
接合面において、約1000気圧程度の熱間等方加圧接
合(いわゆるHIP接合)により金属接合することによ
ってMo系合金プレート12に一体に接合されたもので
ある。断熱材層16は、制動装置10で発生した熱を機
体1側に伝達させないために配置されたものであり、雲
母板その他各種断熱素材が好適に用いられる。
The titanium alloy layer 14 secures a sufficient amount of the Mo-based alloy plate 12 projecting from the lower part of the fuselage 1 and reduces the weight. The joint surface of the Mo-based alloy plate 12 has a pressure of about 1000 atm. It is integrally joined to the Mo-based alloy plate 12 by metal joining by a degree of hot isostatic pressing (so-called HIP joining). The heat insulating material layer 16 is arranged so as not to transmit the heat generated by the braking device 10 to the body 1 side, and mica plates and other various heat insulating materials are suitably used.

【0013】各リベット18は、既存の航空機の機体で
あっても制動装置10の取付け性を考慮するための接合
手段として用いられ、その材質、取り付け位置及び打込
み本数は、着地時の耐衝撃性、耐熱性を考慮して適宜設
定される。またリベット18の頭部は、Mo系合金プレ
ート12の表面に出ないよう、Mo系合金プレート12
の表面側に窪み12aを形成した上で取り付けられる。
さらに、機体1の内側におけるリベット18のカシメ位
置においては、図示しないが、リベット位置に補強板な
どを配置することで、着地衝撃によって制動装置10の
機体1側からの脱落が防止されるようになっている。
Each rivet 18 is used as a joining means for considering the mounting property of the braking device 10 even in the body of an existing aircraft, and its material, mounting position, and number of driving are determined by impact resistance at the time of landing. It is set appropriately in consideration of heat resistance. Also, the head of the rivet 18 is not exposed on the surface of the Mo-based alloy plate 12 so that the Mo-based alloy plate 12
A recess 12a is formed on the surface side of the device.
Further, at the caulking position of the rivet 18 inside the body 1, although not shown, a reinforcing plate or the like is arranged at the rivet position so that the braking device 10 is prevented from falling off from the body 1 due to a landing impact. Has become.

【0014】従って、以上の構造の制動装置10を機体
1に備えることで、緊急時の胴体による制動時には、胴
体1の下部先端位置及び左右エンジン4の下部のそれぞ
れに配置された制動装置10のいずれか又は全てが滑走
路面に接触し、滑走路面5との間で摩擦を生じつつ機体
1に制動を掛ける。三つ全ての制動装置10で制動を行
う場合、三点支持により機体1を水平に保持することが
可能となる。
Therefore, by equipping the fuselage 1 with the braking device 10 having the above-described structure, during emergency braking by the fuselage, the braking device 10 disposed at the lower end position of the lower portion of the fuselage 1 and the lower portion of the left and right engines 4 is provided. Any or all of them contact the runway surface, and apply a brake to the body 1 while generating friction with the runway surface 5. When braking is performed by all three braking devices 10, the body 1 can be held horizontally by three-point support.

【0015】このときの接地位置の温度は1000〜2
000℃まで昇温する。しかし、制動面においてはこれ
より融点の高いMo系合金プレート12が接しているた
め、溶融することなく、順次接触面を摩耗しつつその摩
擦力により早期に制動が掛けられる。また、火花の発生
がないとともに、発生した摩擦熱は断熱材層16により
機体1に伝達されることがないため、機体1に対する温
度上昇を伴わず、従って機体の溶融や燃料への熱の伝搬
もなく、火災事故などの懸念も抑制されることになる。
At this time, the temperature at the contact position is 1000-2.
Raise the temperature to 000 ° C. However, since the Mo-based alloy plate 12 having a higher melting point is in contact with the braking surface, the braking is applied early by the frictional force while sequentially abrading the contact surface without melting. Further, since no spark is generated and the generated frictional heat is not transmitted to the fuselage 1 by the heat insulating material layer 16, the temperature of the fuselage 1 is not increased, so that the fuselage is melted and the heat is transmitted to the fuel. There is no need to worry about fire accidents.

【0016】以上の制動装置10は緊急用のものである
から、最終的には全損するものであるが、これによって
機体1は保全されるとともに、乗客、乗員の安全を確保
出来ることになる。なお、以上の実施形態では、本発明
を旅客機の非常用制動装置に適用した場合を示したが、
引込み脚方式の航空機一般に適用できることは勿論であ
る。
Since the above-mentioned braking device 10 is an emergency device, it is ultimately totally damaged. However, this protects the airframe 1 and ensures the safety of passengers and occupants. In the above embodiment, the case where the present invention is applied to an emergency braking device for a passenger aircraft has been described.
It is needless to say that the present invention can be applied to general aircraft of the retractable leg type.

【0017】[0017]

【発明の効果】以上の説明により明らかなように、本発
明による航空機の緊急着陸用制動装置によれば、緊急事
態により胴体による制動を余儀なくされた場合に、安定
した制動力を確保すると同時に、火災の発生を抑制でき
る。
As apparent from the above description, according to the emergency landing brake system for an aircraft according to the present invention, when braking by the fuselage is forced in an emergency, a stable braking force is secured while The occurrence of fire can be suppressed.

【図面の簡単な説明】[Brief description of the drawings]

【図1】図1は本発明に係わる実施の形態の制動装置を
装備した双発型ジェット旅客機の斜視図である。
FIG. 1 is a perspective view of a twin-engine jet airliner equipped with a braking device according to an embodiment of the present invention.

【図2】図1の双発型ジェット旅客機を下方から見た下
面図である。
FIG. 2 is a bottom view of the twin-engine jet airliner of FIG. 1 as viewed from below.

【図3】制動装置の詳細を示す断面図である。FIG. 3 is a sectional view showing details of a braking device.

【符号の説明】[Explanation of symbols]

1 機体 2 胴体 3 主翼 10 制動装置 12 Mo系合金プレート(摺動摩擦材) 14 チタン合金層 16 断熱材層 18 リベット DESCRIPTION OF SYMBOLS 1 Airframe 2 Fuselage 3 Main wing 10 Braking device 12 Mo alloy plate (sliding friction material) 14 Titanium alloy layer 16 Heat insulation material layer 18 Rivets

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 航空機の機体下部の緊急時接地部にモリ
ブデン(Mo)系合金製の摺動摩擦材を突出して固定し
たことを特徴とする航空機の緊急着陸用制動装置。
1. An emergency landing braking device for an aircraft, wherein a sliding friction material made of a molybdenum (Mo) alloy is projected and fixed to an emergency contact portion under the fuselage of the aircraft.
【請求項2】 前記摺動摩擦材が少なくとも胴体の先端
下部と両主翼の最下部とに配備されていることを特徴と
する請求項1に記載の航空機の緊急着陸用制動装置。
2. The emergency landing brake system for an aircraft according to claim 1, wherein said sliding friction material is provided at least at a lower end of a fuselage and at a lowermost portion of both main wings.
【請求項3】 前記摺動摩擦材を構成するモリブデン
(Mo)系合金が航空機の機体との間に配置されるチタ
ン合金層に熱間加圧接合により一体化されていることを
特徴とする請求項1または2に記載の航空機の緊急着陸
用制動装置。
3. A molybdenum (Mo) alloy constituting the sliding friction material is integrated with a titanium alloy layer disposed between the body and an aircraft body by hot press bonding. Item 3. An aircraft emergency landing braking device according to item 1 or 2.
【請求項4】 前記摺動摩擦材が断熱層を介して機体側
に接合さることを特徴とする請求項1〜3のいずれかに
記載の航空機の緊急着陸用制動装置。
4. The braking system for emergency landing of an aircraft according to claim 1, wherein the sliding friction material is joined to the fuselage via a heat insulating layer.
JP34228699A 1999-12-01 1999-12-01 Brake system for emergency landing of aircraft Pending JP2001158398A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP34228699A JP2001158398A (en) 1999-12-01 1999-12-01 Brake system for emergency landing of aircraft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP34228699A JP2001158398A (en) 1999-12-01 1999-12-01 Brake system for emergency landing of aircraft

Publications (1)

Publication Number Publication Date
JP2001158398A true JP2001158398A (en) 2001-06-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP34228699A Pending JP2001158398A (en) 1999-12-01 1999-12-01 Brake system for emergency landing of aircraft

Country Status (1)

Country Link
JP (1) JP2001158398A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010247820A (en) * 2009-03-27 2010-11-04 Honda Motor Co Ltd Skid rail for aircraft and method for manufacturing the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010247820A (en) * 2009-03-27 2010-11-04 Honda Motor Co Ltd Skid rail for aircraft and method for manufacturing the same

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