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J 24
J24 may refer to: Vehicles * J/24 The J/24 is an international One-Design and Midget Ocean Racing Club trailerable keelboat class built by J/Boats and defined by World Sailing. The J/24 was created to fulfill the diverse needs of recreational sailors such as cruising, one d ..., a keelboat * FVM J24, a Swedish fighter aircraft * , a ''Halcyon''-class minesweeper of the Royal Navy * LNER Class J24, a British steam locomotive class Other uses * Gyroelongated pentagonal cupola, a Johnson solid (J24) * Johor State Route J24, a road in Malaysia {{Letter-Number Combination Disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
J/24
The J/24 is an international One-Design and Midget Ocean Racing Club trailerable keelboat class built by J/Boats and defined by World Sailing. The J/24 was created to fulfill the diverse needs of recreational sailors such as cruising, one design racing, day sailing, and handicap racing.Henkel, Steve: ''The Sailor's Book of Small Cruising Sailboats'', page 294. International Marine/McGraw-Hill, 2010. The J/24 class has more than 50,000 people sailing 5,500 boats worldwide; is established in 27 countries with well and is the world's most popular one design keelboat. Production In the summer of 1975 Rodney Johnstone designed and built hull number 1 in his garage in Stonington, Connecticut. "Ragtime" would serve as the master mold for the subsequent hulls. This design allowed him to start the very successful J-Boat company with his brother Bob Johnstone. By 1978 the class was popular enough to hold a one-design regatta in Key West with twenty boats on the line. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FVM J24
The FVM J 23 was a Swedish single seat, single engine, parasol wing fighter aircraft built in the mid-1920s. Five were flown but the type never reached operational status because of structural concerns raised by a fatal accident. Design and development The parasol wing of the J 23 had a thick airfoil section, a straight leading edge and a trailing edge which curved forwards to elliptical tips. In the central region the wing became thinner and the chord decreased in front of the cockpit. It was of wooden, two spar construction and plywood covered apart from the ailerons. These were angled, fabric covered and small but slotted to improve their efficiency. Parallel pairs of airfoil section flying struts ran on each side from the lower fuselage to the wing spars at about one third span. Over the fuselage a pair of N-form cabane struts leaned inwards to meet at the wing's centre. Like the wing, the fuselage and empennage of the J 23 were wooden structures. The elliptical cross ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LNER Class J24
The NER Class P (LNER Class J24) was a class of 0-6-0 steam locomotives of the North Eastern Railway. They were designed by Wilson Worsdell for mineral traffic. Modifications As built, the locomotives had slide valves but 20 were fitted with piston valves and superheaters between 1914 and 1920. The cylinder bore was increased by half an inch at the same time. In the infobox (right) 'ns' denotes non-superheated and 'su' denotes superheated. Some locomotives later had their superheaters removed but the piston valves were retained. British Railways Thirty-four locomotives survived into British Railways ownership in 1948 and their BR numbers were 65600-65644 (with gaps). Withdrawal Withdrawals started under LNER ownership in 1933. British Rail British Railways (BR), which from 1965 traded as British Rail, was a state-owned company that operated most of the overground rail transport in Great Britain from 1948 to 1997. It was formed from the nationalisation of the Big Four B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gyroelongated Pentagonal Cupola
In geometry, the gyroelongated pentagonal cupola is one of the Johnson solids (''J''24). As the name suggests, it can be constructed by gyroelongating a pentagonal cupola (''J''5) by attaching a decagonal antiprism to its base. It can also be seen as a gyroelongated pentagonal bicupola (''J''46) with one pentagonal cupola removed. Area and Volume With edge length a, the surface area is :A=\frac\left( 20+25\sqrt+\left(10+\sqrt\right)\sqrt\right)a^2\approx25.240003791...a^2, and the volume is :V=\left(\frac+\frac\sqrt + \frac\sqrt\right) a^3\approx 9.073333194...a^3. Dual polyhedron The dual of the gyroelongated pentagonal cupola has 25 faces: 10 kites, 5 rhombi, and 10 pentagons. External links * {{Johnson solids navigator Johnson solids ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
