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Space Derby
The space derby was a racing event for Cub Scouts in the Boy Scouts of America that is similar to the pinewood derby car race. Cub Scouts (the young-age division of the Boy Scouts) race miniature balsa wood gliders that are propelled by a rubber band and propeller. During the 1960s, this was also known as the "rocket derby". Construction The space derby kit consisted of a balsa wood block, propeller assembly, rubber band A rubber band (also known as an elastic, gum band or lacky band) is a loop of rubber, usually ring or oval shaped, and commonly used to hold multiple objects together. The rubber band was patented in England on March 17, 1845, by Stephen Perry ...s, plastic sheet (for fins), and a mounting bracket. The wood block came out of the box with a drilled out center hole. The block was carved into the desired shape, sanded and painted. The mounting bracket and fins could be added either before or after painting. The rubber band was inserted through the center hole wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 contiguous states border Canada to the north and Mexico to the south, with the semi-exclave of Alaska in the northwest and the archipelago of Hawaii in the Pacific Ocean. The United States asserts sovereignty over five Territories of the United States, major island territories and United States Minor Outlying Islands, various uninhabited islands in Oceania and the Caribbean. It is a megadiverse country, with the world's List of countries and dependencies by area, third-largest land area and List of countries and dependencies by population, third-largest population, exceeding 340 million. Its three Metropolitan statistical areas by population, largest metropolitan areas are New York metropolitan area, New York, Greater Los Angeles, Los Angel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Boy Scouts Of America
Scouting America is the largest scouting organization and one of the largest List of youth organizations, youth organizations in the United States, with over 1 million youth, including nearly 200,000 female participants. Founded as the Boy Scouts of America in 1910, about 130 million Americans have participated in its programs, which are served by 465,000 adult volunteers. The organization became a founding member of the World Organization of the Scout Movement in 1922. The stated mission of Scouting America is to "prepare young people to make ethical and moral choices over their lifetimes by instilling in them the values of the Scout Oath and Law." Youth are trained in responsible citizenship, character development, and self-reliance through participation in a wide range of outdoor activities, educational programs, and, at older age levels, career-oriented programs in partnership with community organizations. For younger members, the Scout method is part of the program to inst ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Cub Scouting (Boy Scouts Of America)
Cub Scouts is a Scouting America program available to coeducational children from kindergarten through fifth grade (or 5 to 10 years of age) and their families. Its membership is the largest of the five main Scouting America divisions (Cub Scouting, Scouts BSA, Venturing, Exploring (Learning for Life), Exploring and Sea Scouting (Boy Scouts of America), Sea Scouting). Cub Scouts is part of the worldwide Scouting movement and aims to promote character development, citizenship training, personal fitness, and leadership. Cub Scouts are organized into local packs where they complete requirements to advance in rank as well as engage in pack events such as the Pinewood derby, Pinewood Derby. Origins As early as 1911, Ernest Thompson Seton had developed a prototype program he named ''Cub Scouts of America'' that was never implemented. James E. West (Scouting), James E. West felt that having BSA divisions for younger boys (those under 12; the "younger boy problem") would draw away boy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Pinewood Derby
The Pinewood Derby is the wood car racing event of the Cub Scout Program of the Scouting America. Pinewood derbies are often run by packs of the Cub Scouts program. With the help of adults, Cub Scouts build their own unpowered, unmanned miniature cars from wood, usually from kits containing a block of pine wood, plastic wheels, stickers with numbers, and metal axles. With the popularity of the pinewood derby, other organizations have developed similar events. Pinewood derby is a registered trademark of the Boy Scouts of America so most use different names. Each derby has slightly different rules for making and racing their cars. A small industry has developed to provide organizer equipment (e.g. tracks, timers, and scales) and awards (e.g. trophies and ribbons). Similar Cub Scouting events include the raingutter regatta (a race for miniature boats) and the space derby (a race for rubber band-driven propeller shuttles). Origins The first pinewood derby was held on at the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Balsa Wood
''Ochroma pyramidale'', commonly known as balsa, is a large, fast-growing tree native to the Americas. It is the sole member of the genus ''Ochroma'', and is classified in the subfamily Bombacoideae of the mallow family Malvaceae. The tree is famous for its wide usage in woodworking, due to its softness and its high strength compared to its low density. The name ''balsa'' is the Spanish word for "raft" and the Portuguese word for ferry. A deciduous angiosperm, ''Ochroma pyramidale'' can grow up to 30 m tall, and is classified as a hardwood despite the wood itself being very soft; it is the softest commercial hardwood and is widely used because of its light weight. Balsa trees grow extremely fast, often up to 27 metres in 10–15 years, and do not usually live beyond 30 to 40 years. In terms of volume (as opposed to height) they may be the fastest growing tree known; Streets mentions one individual which grew tall and diameter at breast height during a period of fifteen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Rubber Band
A rubber band (also known as an elastic, gum band or lacky band) is a loop of rubber, usually ring or oval shaped, and commonly used to hold multiple objects together. The rubber band was patented in England on March 17, 1845, by Stephen Perry (inventor), Stephen Perry. Most rubber bands are manufactured out of natural rubber as well as for latex free rubber bands or, especially at larger sizes, an elastomer, and are sold in a variety of sizes. Notable developments in the evolution of rubber bands began in 1923 when William H. Spencer obtained a few Goodyear inner tubes and cut the bands by hand in his basement, where he founded Alliance Rubber Company. Spencer persuaded the ''Akron Beacon Journal'' as well as the ''Tulsa World'' to try wrapping their newspapers with one of his rubber bands to prevent them from blowing across lawns. He went on to pioneer other new markets for rubber bands such as: agricultural and industrial applications and a myriad of other uses. Spencer obtai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Propeller
A propeller (often called a screw if on a ship or an airscrew if on an aircraft) is a device with a rotating hub and radiating blades that are set at a pitch to form a helical spiral which, when rotated, exerts linear thrust upon a working fluid such as water or air. Propellers are used to pump fluid through a pipe or duct, or to create thrust to propel a boat through water or an aircraft through air. The blades are shaped so that their rotational motion through the fluid causes a pressure difference between the two surfaces of the blade by Bernoulli's principle which exerts force on the fluid. Most marine propellers are screw propellers with helical blades rotating on a propeller shaft (ship), propeller shaft with an approximately horizontal axis. History Early developments The principle employed in using a screw propeller is derived from stern sculling. In sculling, a single blade is moved through an arc, from side to side taking care to keep presenting the blade to the wat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Space Derby Rocket
Space is a three-dimensional continuum containing positions and directions. In classical physics, physical space is often conceived in three linear dimensions. Modern physicists usually consider it, with time, to be part of a boundless four-dimensional continuum known as ''spacetime''. The concept of space is considered to be of fundamental importance to an understanding of the physical universe. However, disagreement continues between philosophers over whether it is itself an entity, a relationship between entities, or part of a conceptual framework. In the 19th and 20th centuries mathematicians began to examine geometries that are non-Euclidean, in which space is conceived as '' curved'', rather than '' flat'', as in the Euclidean space. According to Albert Einstein's theory of general relativity, space around gravitational fields deviates from Euclidean space. Experimental tests of general relativity have confirmed that non-Euclidean geometries provide a better model for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Raingutter Regatta
The raingutter regatta is a racing event for Cub Scouts in the Boy Scouts of America that is the sailboat equivalent of the pinewood derby. The sailboat kit consists of a seven-inch (178 mm) long balsa wood hull, a -inch mast, plastic sail, plastic rudder, and metal keel. Within the basic design rules, Scouts are free to paint and decorate their sailboats as they choose. Modifications for speed include the placement of the keel and rudder and the size, shape and location of the sail. A catamaran is an exceptionally fast design, although this modification is not allowed in all races. Racing The boats are raced in a standard rain gutter that is ten feet long, placed on a table or saw horses, and filled to the top with water. The boats are propelled by blowing on the sail, either directly or through a drinking straw; the boat cannot be touched with hands or the straw. The first boat to reach the end of the gutter is the winner. The overall winner is determined by an elimina ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Scouting Events
Scouting or the Scout Movement is a youth movement which became popularly established in the first decade of the twentieth century. It follows the Scout method of informal education with an emphasis on practical outdoor activities, including camping, woodcraft, aquatics, hiking, backpacking and sports. A widely recognized movement characteristic is the Scout uniform, by intent hiding all differences of social standing and encouraging equality, with neckerchief (known as a scarf in some countries) and (originally) a campaign hat or comparable headwear. Distinctive insignia include the fleur-de-lis as well as merit badges or patches. In some countries, Girl Guides organizations, using a trefoil insignia, exist for girls to carry-out scout training. Other programs for children who are too young to be Scouts and take the Scout Promise, such as Wolf Cubs or Cubs (launched in 1916), and for those who are too old to be Scouts, such as Rovers (launched in 1918), are sometimes asso ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Racing
In sports, racing is a competition of speed, in which competitors try to complete a given task in the shortest amount of time. Typically this involves traversing some distance, but it can be any other task involving speed to reach a specific goal. A race may be run continuously to finish or may be made up of several segments called heats, stages or legs. A heat is usually run over the same course at different times. A stage is a shorter section of a much longer course or a time trial. Early records of races are evident on pottery from ancient Greece, which depicted running men vying for first place. A chariot race is described in Homer's ''Iliad''. Etymology The word ''race'' comes from a Norse word. This Norse word arrived in France during the invading of Normandy and gave the word ''raz'' which means "swift water" in Brittany, as in a mill race; it can be found in " Pointe du Raz" (the most western point of France, in Brittany), and "''raz-de-marée''" (tsunami). The w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
