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P-791
The Lockheed Martin P-791 is an experimental aerostatic and aerodynamic hybrid airship developed by Lockheed Martin. The first flight of the P-791 took place on 31 January 2006 at the company's flight test facility at United States Air Force Plant 42 in Palmdale, CA. Description The P-791 has a tri-hull shape, with disk-shaped cushions on the bottom for landing. As a hybrid airship, part of the weight of the craft and its payload are supported by aerostatic (buoyant) lift and the remainder is supported by aerodynamic lift. The combination of aerodynamic and aerostatic lift is an attempt to benefit from both the high speed of aerodynamic craft and the lifting capacity of aerostatic craft. History The P-791 was designed as part of the U.S. Army's Long Endurance Multi-intelligence Vehicle (LEMV) program, but lost the program's competition to Northrop Grumman's HAV-3 design. The P-791 was modified to be a civil cargo aircraft under the name SkyTug, with a lift capability of and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hybrid Airship
A hybrid airship or plimp is a powered aircraft that obtains some of its lift as a lighter-than-air (LTA) airship and some from aerodynamic lift as a heavier-than-air aerodyne. A ''dynastat'' is a hybrid airship with fixed wings and/or a lifting body and is typically intended for long-endurance flights. It requires forward flight to create the aerodynamic lift component. A ''rotastat'' is a hybrid airship with rotary wings and is typically intended for heavy lift applications. Its rotary wings can provide lift even when hovering or manoeuvring vertically, like a helicopter. No production designs have been built, but several manned and unmanned prototypes have flown. The term "hybrid airship" has also been used to describe an airship comprising a mix of rigid, semi-rigid, and non-rigid construction. Features Conventional airships have low operating costs because they need no engine power to remain airborne, but are limited in several ways, including low payload/volume ratio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Long Endurance Multi-intelligence Vehicle
The Hybrid Air Vehicles Airlander 10, originally developed as the HAV 304, is a hybrid airship designed and built by British manufacturer Hybrid Air Vehicles (HAV). Comprising a helium airship with auxiliary wing and tail surfaces, it flies using both aerostatic and aerodynamic lift and is powered by four diesel engine-driven ducted propellers. The HAV 304 was originally built for the United States Army's Long Endurance Multi-intelligence Vehicle (LEMV) programme. Its maiden flight took place in 2012 at Lakehurst, New Jersey, in the US. In 2013, the LEMV project was cancelled by the US Army. HAV reacquired the airship and brought it back to Cardington Airfield in England. It was reassembled and modified for civilian use, and in this form was redesignated the Airlander 10. The modified aircraft completed design certification testing before being written off when it came loose from its moorings in a high wind on 18 November 2017 at Cardington Airfield. A production run of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hybrid Air Vehicles HAV 304 Airlander 10
The Hybrid Air Vehicles Airlander 10, originally developed as the HAV 304, is a hybrid airship designed and built by British manufacturer Hybrid Air Vehicles (HAV). Comprising a helium airship with auxiliary wing and tail surfaces, it flies using both aerostatic and aerodynamic lift and is powered by four diesel engine-driven ducted propellers. The HAV 304 was originally built for the United States Army's Long Endurance Multi-intelligence Vehicle (LEMV) programme. Its maiden flight took place in 2012 at Lakehurst, New Jersey, in the US. In 2013, the LEMV project was cancelled by the US Army. HAV reacquired the airship and brought it back to Cardington Airfield in England. It was reassembled and modified for civilian use, and in this form was redesignated the Airlander 10. The modified aircraft completed design certification testing before being written off when it came loose from its moorings in a high wind on 18 November 2017 at Cardington Airfield. A production run of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thermoplan
The Thermoplan is a given name of the prototype of Russian lenticular-shaped hybrid airship. Design features The key feature of Thermoplan is its combined structure with primary section having a torus of revolution shape (one variant was to construct this section hermetic and fill with helium instead of the shell helium section). This section supports the shell which has two sections one filled with helium and second with air that can be heated by the airship engines exhaust gas or cooled naturally. This design, based on the concept of a " rozière", greatly improves the manoeuvrability compared to an all-helium type. The disc shape is also intended to improve manoeuvrability and to help resist winds up to . Shell volume was 10660 cu. m. (376 450 cu. ft.) with its diameter of 40 m. The prototype had 2 Klimov GTD-350 engines (with 400 h.p. each), 1 Vedeneyev M14P motor (360 h.p.) and 2 electric power unit for vertical propulsion (50 h.p. each). Flight crew was 2 pilots. Pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aeroscraft
Worldwide Aeros Corp is an American manufacturer of airships based in Montebello, California. It was founded in 1993 by the current CEO and Chief Engineer, Igor Pasternak, who was born in Soviet Kazakhstan, raised in Soviet Ukraine, and moved to the U.S. after the Soviet collapse to build airships there. It currently employs more than 100 workers. The company's current products are non-rigids aimed at both the military and commercial markets, including transport, surveillance, broadcasting and advertising. The company's best-selling ship is called the Sky Dragon. The company is also developing an Aeroscraft, a rigid airship with a number of innovative features, the most important of which is a method of controlling the airship's static lift, which can be reduced by pumping helium from the internal gasbags and storing it under pressure: conversely lift can be increased by re-inflating the gasbags using the stored gas. The company has received $60 million from the U.S. Department ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aerostatic
A subfield of fluid statics, aerostatics is the study of gases that are not in motion with respect to the coordinate system in which they are considered. The corresponding study of gases in motion is called aerodynamics. Aerostatics studies density allocation, especially in air. One of the applications of this is the barometric formula. An aerostat is a lighter than air craft, such as an airship or balloon, which uses the principles of aerostatics to float. Basic laws Treatment of the equations of gaseous behaviour at rest is generally taken, as in hydrostatics, to begin with a consideration of the general equations of momentum for fluid flow, which can be expressed as: \rho + U_i = - - + \rho g_j , where \rho is the mass density of the fluid, U_j is the instantaneous velocity, P is fluid pressure, g are the external body forces acting on the fluid, and \tau_ is the momentum transport coefficient. As the fluid's static nature mandates that U_j = 0 , and that \ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lockheed Martin Aircraft
Lockheed (originally spelled Loughead) may refer to: Brands and enterprises * Lockheed Corporation, a former American aircraft manufacturer * Lockheed Martin, formed in 1995 by the merger of Lockheed Corporation and Martin Marietta ** Lockheed Martin Aeronautics ** Lockheed Martin Space Systems * Lockheed Shipbuilding and Construction Company People * Flora Haines Loughead (1855-1943), American writer, farmer, miner * The brothers who founded the original Lockheed Corporation: ** Allan Loughead (1889–1969), American aviation pioneer ** Malcolm Loughead, American aviation pioneer Other uses * Lockheed (comics) Lockheed is a fictional character appearing in American comic books published by Marvel Comics. The character appears most commonly in association with the X-Men. He is an alien dragon and longtime companion of Shadowcat (Kitty Pryde), a member of ..., a Marvel Comics character * Lockheed Martin Transit Center, in Sunnyvale, California {{Disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
EosXi
The Nimbus EosXi is an Italian unmanned aerial vehicle (UAV) designed for civilian use, developed and manufactured by NIMBUS Srl. EOS XI is a hybrid airship having a large, gas-filled delta wing which provides both aerostatic and aerodynamic lift, referred to by the manufacturer as a "metaplane". The cabin, tail assembly and propulsion system are suspended below the wing. Description Although classified as an aerodyne (an aircraft heavier than air), the additional aerostatic lift allows extremely short take-off and landing (STOL) distances. Unlike conventional aircraft, which use adjustable control surfaces known as ailerons to maneuver in flight, the EosXi wing is a stiff structure with no moving parts. The craft uses only the suspended tail assembly's moveable planes for course and attitude control, relying on the wing's aerostatic lift to enhance stability. The large wing has a low wing loading that contributes to the vehicle's STOL characteristics. The wing envelope has a mu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lockheed Martin LMZ1M , in Sunnyvale, California
{{Disambig ...
Lockheed (originally spelled Loughead) may refer to: Brands and enterprises * Lockheed Corporation, a former American aircraft manufacturer * Lockheed Martin, formed in 1995 by the merger of Lockheed Corporation and Martin Marietta ** Lockheed Martin Aeronautics ** Lockheed Martin Space Systems * Lockheed Shipbuilding and Construction Company People * Flora Haines Loughead (1855-1943), American writer, farmer, miner * The brothers who founded the original Lockheed Corporation: ** Allan Loughead (1889–1969), American aviation pioneer ** Malcolm Loughead, American aviation pioneer Other uses * Lockheed (comics), a Marvel Comics character * Lockheed Martin Transit Center Lockheed Martin Transit Center (signed as simply Lockheed Martin station on many signs) is a light rail and transit bus station operated by Santa Clara Valley Transportation Authority (VTA), located in Sunnyvale, California. This station is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Letter Of Intent
A letter of intent (LOI or LoI, or Letter of Intent) is a document outlining the understanding between two or more parties which they intend to formalize in a contract, legally binding agreement. The concept is similar to a Heads of agreement (law), heads of agreement, term sheet or memorandum of understanding. Merger and acquisition agreements, joint venture agreements, real property lease agreements and several other categories of agreements often make use of a letter of intent. The capitalized form ''Letter of Intent'' may be used in legal writing, but only when referring to a specific document under discussion. LOIs resemble short, written contracts, often in tabular form. They are not binding on the parties in their entirety. Many LOIs, however, contain provisions that are binding, such as those governing non-disclosure agreement, non-disclosure, governing law, Exclusive exclusivity or a Covenant (law), covenant to negotiate in good faith. A LOI may sometimes be interprete ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alaska
Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S., it borders the Canadian province of British Columbia and the Yukon territory to the east; it also shares a maritime border with the Russian Federation's Chukotka Autonomous Okrug to the west, just across the Bering Strait. To the north are the Chukchi and Beaufort Seas of the Arctic Ocean, while the Pacific Ocean lies to the south and southwest. Alaska is by far the largest U.S. state by area, comprising more total area than the next three largest states (Texas, California, and Montana) combined. It represents the seventh-largest subnational division in the world. It is the third-least populous and the most sparsely populated state, but by far the continent's most populous territory located mostly north of the 60th parallel, with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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