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HMCS Bras D'Or (FHE 400)
HMCS ''Bras d'Or'' (FHE 400) was a hydrofoil that served in the Canadian Forces from 1968 to 1971. During sea trials in 1969, the vessel exceeded , making her the fastest unarmed warship in the world at the time. The vessel was originally built from 1960 to 1967 for the Royal Canadian Navy, as a project for the testing of anti-submarine warfare technology on an ocean-going hydrofoil. The RCN was replaced on 1 February 1968 by the unified Canadian Armed Forces, and ''Bras d'Or'' was commissioned into that service several months later. Changes in priorities and cost overruns later led to the project's cancellation. ''Bras d'Or'' was named in honour of Bras d'Or Lake on Nova Scotia's Cape Breton Island, where inventor Alexander Graham Bell performed hydrofoil experiments in the early 20th century near his estate and new laboratory at Beinn Bhreagh, Nova Scotia, Beinn Bhreagh, setting the world watercraft speed record in the process. In 1909 the lake was also the historic site of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
L'Islet, Quebec
L'Islet is a municipality within L'Islet Regional County Municipality in the Chaudière-Appalaches region of Quebec, Canada. It is located on the south shore of the Saint Lawrence River halfway between Quebec City and Rivière-du-Loup. The Musée Maritime du Québec (Quebec Marine Museum) is located there on Route 132. History and geography The current town of L'Islet was formed in 2000 with the merger of the former city of L'Islet, the municipality of L'Islet-sur-Mer, and the parish municipality of Saint-Eugène. The municipality got its name from a small island in the river near the village of L'Islet-sur-Mer. The Notre-Dame-de-Bonsecours church, built 1768, is classified as important historical building. The town hosts many small events during the year such as the Festival Guitares en fête, La Parades des Berlots, and the L'Islet Car Show. Local rivers include the: * Tortue River * Bras St-Nicolas River * Talbot River Notable people * Adine Fafard-Drolet, singer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aerial Experiment Association
The Aerial Experiment Association (AEA) was a Canadian-American aeronautical research group formed on 30 September 1907, under the leadership of Dr. Alexander Graham Bell. The AEA produced several different aircraft in quick succession, with each member acting as principal designer for at least one. The group introduced key technical innovations, notably wingtip ailerons and the tricycle landing gear. According to Bell, the AEA was a "co-operative scientific association, not for gain but for the love of the art and doing what we can to help one another."Milberry 1979, p. 13. Although the association had no significant commercial impact, one of its members, Glenn Curtiss, later established a commercial venture that would ultimately become the Curtiss Aeroplane and Motor Company. The AEA was disbanded on 31 March 1909. Origins The AEA came into being when John Alexander Douglas McCurdy and his friend Frederick W. "Casey" Baldwin, two recent engineering graduates of the Universi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gas Turbine
A gas turbine, also called a combustion turbine, is a type of continuous flow internal combustion engine. The main parts common to all gas turbine engines form the power-producing part (known as the gas generator or core) and are, in the direction of flow: * a rotating gas compressor * a combustor * a compressor-driving turbine. Additional components have to be added to the gas generator to suit its application. Common to all is an air inlet but with different configurations to suit the requirements of marine use, land use or flight at speeds varying from stationary to supersonic. A propelling nozzle is added to produce thrust for flight. An extra turbine is added to drive a propeller ( turboprop) or ducted fan (turbofan) to reduce fuel consumption (by increasing propulsive efficiency) at subsonic flight speeds. An extra turbine is also required to drive a helicopter rotor or land-vehicle transmission ( turboshaft), marine propeller or electrical generator (power turbine). Grea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pratt & Whitney GG4
The Pratt & Whitney GG4 and FT4 are related aero-derivative gas turbine A gas turbine, also called a combustion turbine, is a type of continuous flow internal combustion engine. The main parts common to all gas turbine engines form the power-producing part (known as the gas generator or core) and are, in the directio ... engines developed from the Pratt & Whitney J75/JT4 turbojet line.''The History and Future of Technology: Can Technology Save Humanity from Extinction?'' Robert U. Ayres. See also References External links {{DEFAULTSORT:Pratt and Whitney GG4[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dihedral (aircraft)
In aeronautics, dihedral is the angle between the left and right wings (or tail surfaces) of an aircraft. "Dihedral" is also used to describe the effect of sideslip on the rolling of the aircraft. Dihedral angle is the upward angle from horizontal of the wings or tailplane of a fixed-wing aircraft. "Anhedral angle" is the name given to negative dihedral angle, that is, when there is a ''downward'' angle from horizontal of the wings or tailplane of a fixed-wing aircraft. Dihedral angle has a strong influence on dihedral effect, which is named after it. Dihedral effect is the amount of roll moment produced in proportion to the amount of sideslip. Dihedral effect is a critical factor in the stability of an aircraft about the roll axis (the spiral mode). It is also pertinent to the nature of an aircraft's Dutch roll oscillation and to maneuverability about the roll axis. Longitudinal dihedral is a comparatively obscure term related to the pitch axis of an airplane. It ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HMCS Bras D Or 400 Avant
HMCS may refer to: * Her Majesty's Courts Service * His Majesty's Canadian Ship * His Majesty's Colonial Ship, see His Majesty's Ship * Senior Chief Hospital Corpsman, a United States Navy rate * ''Hazardous Material Control System'' (see Workplace Hazardous Materials Information System) * HMC Investment Securities * Molybdenum cofactor sulfurtransferase Molybdenum cofactor sulfurtransferase (, ''molybdenum cofactor sulfurase'', ''ABA3'', ''MoCo sulfurase'', ''MoCo sulfurtransferase'') is an enzyme with systematic name ''L-cysteine:molybdenum cofactor sulfurtransferase''. This enzyme catalyses t ..., an enzyme {{disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neoprene
Neoprene (also polychloroprene) is a family of synthetic rubbers that are produced by polymerization of chloroprene.Werner Obrecht, Jean-Pierre Lambert, Michael Happ, Christiane Oppenheimer-Stix, John Dunn and Ralf Krüger "Rubber, 4. Emulsion Rubbers" in Ullmann's Encyclopedia of Industrial Chemistry, 2012, Wiley-VCH, Weinheim. Neoprene exhibits good chemical stability and maintains flexibility over a wide temperature range. Neoprene is sold either as solid rubber or in latex form and is used in a wide variety of commercial applications, such as laptop sleeves, orthopaedic braces (wrist, knee, etc.), electrical insulation, liquid and sheet-applied elastomeric membranes or flashings, and automotive fan belts. Production Neoprene is produced by free-radical polymerization of chloroprene. In commercial production, this polymer is prepared by free radical emulsion polymerization. Polymerization is initiated using potassium persulfate. Bifunctional nucleophiles, metal oxides ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canard (aeronautics)
In aeronautics, a canard is a wing configuration in which a small forewing or foreplane is placed forward of the main wing of a fixed-wing aircraft or a weapon. The term "canard" may be used to describe the aircraft itself, the wing configuration, or the foreplane.. Canard wings are also extensively used in guided missiles and smart bombs. The term "canard" arose from the appearance of the Santos-Dumont 14-bis of 1906, which was said to be reminiscent of a duck (''canard'' in French) with its neck stretched out in flight. Despite the use of a canard surface on the first powered aeroplane, the Wright Flyer of 1903, canard designs were not built in quantity until the appearance of the Saab Viggen jet fighter in 1967. The aerodynamics of the canard configuration are complex and require careful analysis. Rather than use the conventional tailplane configuration found on most aircraft, an aircraft designer may adopt the canard configuration to reduce the main wing loading, to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maraging Steel
Maraging steels (a portmanteau of " martensitic" and "aging") are steels that are known for possessing superior strength and toughness without losing ductility. ''Aging'' refers to the extended heat-treatment process. These steels are a special class of very-low-carbon ultra-high-strength steels that derive their strength not from carbon, but from precipitation of intermetallic compounds. The principal alloying element is 15 to 25 wt% nickel. Secondary alloying elements, which include cobalt, molybdenum and titanium, are added to produce intermetallic precipitates. Original development (by Bieber of Inco in the late 1950s) was carried out on 20 and 25 wt% Ni steels to which small additions of aluminium, titanium, and niobium were made; a rise in the price of cobalt in the late 1970s led to the development of cobalt-free maraging steels. The common, non-stainless grades contain 17–19 wt% nickel, 8–12 wt% cobalt, 3–5 wt% molybdenum and 0.2–1.6 wt% titanium. Addition of chromi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aluminum
Aluminium (aluminum in American and Canadian English) is a chemical element with the symbol Al and atomic number 13. Aluminium has a density lower than those of other common metals, at approximately one third that of steel. It has a great affinity towards oxygen, and forms a protective layer of oxide on the surface when exposed to air. Aluminium visually resembles silver, both in its color and in its great ability to reflect light. It is soft, non-magnetic and ductile. It has one stable isotope, 27Al; this isotope is very common, making aluminium the twelfth most common element in the Universe. The radioactivity of 26Al is used in radiodating. Chemically, aluminium is a post-transition metal in the boron group; as is common for the group, aluminium forms compounds primarily in the +3 oxidation state. The aluminium cation Al3+ is small and highly charged; as such, it is polarizing, and bonds aluminium forms tend towards covalency. The strong affinity towa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canadian Forces Decoration
The Canadian Forces' Decoration (post-nominal letters "CD") is a Canadian award bestowed upon members of the Canadian Armed Forces who have completed twelve years of military service, with certain conditions. By convention, it is also given to the Governor General of Canada upon his or her appointment as viceroy, which includes the title of Commander-in-Chief in and over Canada. The decoration is awarded to all ranks, who must have a good record of conduct during the final eight years of claimed service. The first Governor General to receive the CD was Viscount Alexander of Tunis in 1951. The medal was initially awarded to all members of the Royal Family who served in the Canadian Forces, even without completion of twelve years of service; this has, however, not been automatic since 1953. Criteria The decoration is awarded to officers and non-commissioned members of the Regular and Reserve forces, including honorary appointments within the Canadian Armed Forces. However, time ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
De Havilland Canada
De Havilland Aircraft of Canada Limited is an aircraft manufacturer with facilities formerly based in the Downsview area of Toronto, Ontario, Canada. The original home of de Havilland Canada was the home of the Canadian Air and Space Museum located in what is now Downsview Park. The aircraft company was created in 1928 by the British de Havilland Aircraft Company to build Moth aircraft for the training of Canadian airmen, and subsequently after the Second World War, designed and produced indigenous designs. In the 1980s, the government of Canada under Prime Minister Brian Mulroney privatized DHC and in 1986 sold the aircraft company to then Seattle-based Boeing. DHC was eventually acquired by Montreal-based Bombardier Aerospace in 1992. In 2006, Viking Air of Victoria, British Columbia, purchased the type certificates for all the original out-of-production de Havilland designs (DHC-1 to DHC-7). In November 2018, Viking Air's holding company, Longview Aviation Capital, anno ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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