WORLD WAR II AIRCRAFT - INFO

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  WORLD WAR II AIRCRAFT WHEN WORLD WAR II began in 1999, air forces had already replaced most of their fabric skinned biplanes with all metal, stressed-skin monoplanes Aireraft played a far greater role in military operations during World War II than ever before, The wide range of sireraft duties, and the introduction of radar tracking and guidance systems, put pressure on designers to improve aircraft performance. The main areas of improvement were speed, range, and engine power. Bombers became larger and more powerful - converting from two to four engines in order to carry a heavier bomb load: the US B 17 Flying Fortress could carry up to 6,2 tonnes (6,1 tons) of bombs ver a distance of about 3,200 km 2.000 miles), Some aircraft increased their range by using drop tanks (fuel tanks that were jettisoned when empty to reduce drag). Fighters needed speed and manoeuvrability: the Hawker Tempest shown here had a maximum speed of 700 kph (36 mph), and was one of the few Allied aircra...
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AMERICAN FOOTBALL - INFO

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AMERICAN FOOTBALL





AMERICAN AND CANADIAN FOOTBALL, the object of the game is to get the ball across the opponent's goal line, either by passing or carrying it across (a touchdown), or by kicking it between their goalposts (a field goal). An American football team has 11 players on the field at a time, although up to 40 players can appear for each side an a single game. The agile "offence" tries to score points, and the heavy Hitting defence holds back the opposition. When in possession of the ball, a team has four chances ("downs"), to move it at least ten yards (in metres) up the field to make a "first down".



The opposition gains possession if they fail, or by tackling and intercepting the ball, Canadian football is played on a larger field, with 12 men on each side. A team has only three chances to achieve a first down. Otherwise, the game is very similar to American football. Helmets, face masks, and layers of body padding are worn by the players for protection.




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WORLD WAR II AIRCRAFT - INFO

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Image
  WORLD WAR II AIRCRAFT WHEN WORLD WAR II began in 1999, air forces had already replaced most of their fabric skinned biplanes with all metal, stressed-skin monoplanes Aireraft played a far greater role in military operations during World War II than ever before, The wide range of sireraft duties, and the introduction of radar tracking and guidance systems, put pressure on designers to improve aircraft performance. The main areas of improvement were speed, range, and engine power. Bombers became larger and more powerful - converting from two to four engines in order to carry a heavier bomb load: the US B 17 Flying Fortress could carry up to 6,2 tonnes (6,1 tons) of bombs ver a distance of about 3,200 km 2.000 miles), Some aircraft increased their range by using drop tanks (fuel tanks that were jettisoned when empty to reduce drag). Fighters needed speed and manoeuvrability: the Hawker Tempest shown here had a maximum speed of 700 kph (36 mph), and was one of the few Allied aircra...
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COMPETITION MOTORCYCLES - INFO

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        COMPETITION MOTORCYCLES THERE ARE MANY TYPES of motorcycle sport and in each, a specialist machine has evolved to perform to specific requirements. Races take place on roads or tracks or "off-road", in fields, dirt tracks, and even the desert. "Grand Prix" world championships in road-racing are contested by three classes: 125cc, 250cc two strokes; the top class of 500cc two-strokes; and 900cc four-stroke machines. The latest racing sidecars have more in common with racing cars than motorcycles.  The rider and passenger operate within an all-enclosing, aerodynamic fairing. The Suzuki RGV500 shown here, like other Grand Prix machines, carries advertising, which helps to cover the cost of developing motorcycle technology. In Speedway, which originated in the US in 1902, motorcycles operate without brakes or a gearbox. Off-road competition motorcycles have less emphasis on high power output. In Motocross, for example, which is held on rough terrain, they m...
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