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Model Rocketry
A model rocket are small rockets designed to reach low altitudes (e.g., for model) and be recovered by a variety of means. According to the United States National Association of Rocketry (NAR) Safety Code, model rockets are constructed of paper, wood, plastic and other lightweight materials. The code also provides guidelines for motor use, launch site selection, launch methods, launcher placement, recovery system design and deployment and more. Since the early 1960s, a copy of the Model Rocket Safety Code has been provided with most model rocket kits and motors. Despite its inherent association with extremely flammable substances and objects with a pointed tip traveling at high speeds, model rocketry historically has proven to be a very safe hobby and has been credited as a significant source of inspiration for children who eventually become scientists and engineers. History of model rocketry While there were many small rockets produced after years of research and experim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Model Missiles Incorporated
A model is an informative representation of an object, person or system. The term originally denoted the plans of a building in late 16th-century English, and derived via French and Italian ultimately from Latin ''modulus'', a measure. Models can be divided into physical models (e.g. a model plane) and abstract models (e.g. mathematical expressions describing behavioural patterns). Abstract or conceptual models are central to philosophy of science, as almost every scientific theory effectively embeds some kind of model of the physical or human sphere. In commerce, "model" can refer to a specific design of a product as displayed in a catalogue or show room (e.g. Ford Model T), and by extension to the sold product itself. Types of models include: Physical model A physical model (most commonly referred to simply as a model but in this context distinguished from a conceptual model) is a smaller or larger physical copy of an object. The object being modelled may be small (for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyrotechnic Colorant
A pyrotechnic colorant is a chemical compound which causes a flame to burn with a particular color. These are used to create the colors in pyrotechnic compositions like fireworks and colored fires. The color-producing species are usually created from other chemicals during the reaction. Metal salts are commonly used; elemental metals are used rarely (e.g. copper for blue flames). The color of the flame is dependent on the metal cation; the anion of the salt has very little direct influence. The anions however influence the flame temperature, both by increasing it (e.g. nitrates, chlorates) and decreasing it (e.g. carbonates, oxalates), indirectly influencing the flame brightness and brilliancy. For temperature-decreasing additives, the limit of colorant may be about 10–20 wt.% of the composition. Some common examples are: The * indicates that the compound will burn orange where x=0,2,3,5. Radiating species Despite the wide numbers of metal ion donors, they serve to form ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mach Number
Mach number (M or Ma) (; ) is a dimensionless quantity in fluid dynamics representing the ratio of flow velocity past a boundary to the local speed of sound. It is named after the Moravian physicist and philosopher Ernst Mach. : \mathrm = \frac, where: : is the local Mach number, : is the local flow velocity with respect to the boundaries (either internal, such as an object immersed in the flow, or external, like a channel), and : is the speed of sound in the medium, which in air varies with the square root of the thermodynamic temperature. By definition, at Mach1, the local flow velocity is equal to the speed of sound. At Mach0.65, is 65% of the speed of sound (subsonic), and, at Mach1.35, is 35% faster than the speed of sound (supersonic). Pilots of high-altitude aerospace vehicles use flight Mach number to express a vehicle's true airspeed, but the flow field around a vehicle varies in three dimensions, with corresponding variations in local Mach number. The loc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aerotech Consumer Aerospace
Aerotech Consumer Aerospace, established in 1982, is a company that supplies motors, kits, and components for mid and high-power rocketry. The company's headquarters are located in Cedar City, Utah and its products are sold mainly through US and international dealers. They specialize in APCP used in low-, mid-, and high-power rocket motors as well as supplying rocket kits designed around their motors. Aerotech produces single use and reloadable motors in the mid-power range (D - G impulse). They also produce high power rocket motor reloads, ranging from H to O impulse. High power reloads require proper certification from the National Association of Rocketry or Tripoli Rocketry Association. Until 2017, all reloads required the use of Aerotech, Rouse-Tech, or Dr. Rocket reload casings. A recent cross-use certification agreement permits the use of 98mm Aerotech reloads in CTI (Cesaroni Technology Incorporated) hardware. Corpulent Stump Corpulent Stump is a rocket designed an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
High-power Rocketry
High-power rocketry is a hobby similar to model rocketry. The major difference is that higher impulse range motors are used. The National Fire Protection Association (NFPA) definition of a high-power rocket is one that has a total weight of more than and contains a motor or motors containing more than of propellant and/or rated at more than 160 Newton-seconds (40.47 lbf·s) of total impulse, or that uses a motor with an average thrust of or more. Types High-power rockets are defined as rockets flown using commercially available motors ranging from H to O class. In the U.S., the NFPA1122 standard dictates guidelines for model rocketry, while NFPA1127 is specific to high-power rockets. In most U.S. states NFPA1122 has been adopted as part of the legal code. A smaller number of states use NFPA1127. Associations The Tripoli Rocketry Association and the National Association of Rocketry are the major sanctioning bodies for the hobby in the US, providing member certifications, and cr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black Powder Rocket Motors
A black powder rocket motor propels a model rocket using black powder. Black powder rocket propellants consist of charcoal, sulfur, and potassium nitrate. Adjustments can be made to the amount of each component to change the rate at which the black powder burns. Black powder rocket motors were created in a primitive form by the Chinese in the early 13th century, and through the years refinements have been made and several uses created. They have been used for weapons and surveillance devices as well as recreation. Black powder rocket motors are only produced in small sizes, to reduce the risk of explosion and a loss of efficiency. Black powder rockets are produced in classes 1/8 A through F. Larger sizes of model rocket motors use ammonium perchlorate composite propellant, or other composite fuels that contain ammonium nitrate. History Black powder is the oldest composite propellant. Its use in rockets preceded its use in guns.Bedard, Andre. ‘Black Powder Rockets’. Encyclopedia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quest Aerospace
Quest Aerospace is a company based in Cedar City, UT, United States that designs and produces model rocket kits. Quest Aerospace was founded in 1992 by Bill Stine (son of G. Harry Stine) in Pagosa Springs, Colorado, and produces model rocket kits for various skill levels of modelers, from the beginner to the most highly skilled. In 1995, ToyBiz (now Marvel Entertainment) acquired Quest along with Spectra Star, Inc. In 2003, Bill Stine purchased back Quest Aerospace from Marvel. In 2014 Quest Aerospace was purchased by RCS rocket motor components (Aerotech Consumer Aerospace) and was moved from Pagosa Springs, CO to Cedar City, Utah. Quest's products include model rockets powered by standard 18 mm motors as well as smaller rockets powered by Micro Maxx motors. The company produces both 18 mm motors and Micro Maxx motors for use in its model rocket kits. Powered by compressed black powder motors, some of these rockets can achieve altitudes of over 2000 feet. Quest also pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boy Scouts Of America
The Boy Scouts of America (BSA, colloquially the Boy Scouts) is one of the largest scouting organizations and one of the largest youth organizations in the United States, with about 1.2 million youth participants. The BSA was founded in 1910, and since then, about 110 million Americans have participated in BSA programs. BSA is part of the international Scout Movement and became a founding member organization of the World Organization of the Scout Movement in 1922. The stated mission of the Boy Scouts of 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Damon Industries
Damon may refer to: Places in the United States * Damon, Illinois, an unincorporated community * Damon, Missouri, a ghost town * Damon, Texas, a census-designated place * Damon, Virginia, an unincorporated community * Lake Damon, Florida * Damon Marsh, Oakland, California * Potsdam Municipal Airport, Potsdam, New York, also known as Damon Field People and fictional characters * Damon (given name), a list of people and fictional characters * Damon (surname) Other uses * ''Damon'' (TV series), a sitcom starring Damon Wayans * Damon Records, a record label * ''Damon'' (arachnid), a genus of whip spiders * Damon Prison Al-Dumun was a Palestinian Arab village in the Haifa Subdistrict. It was depopulated during the 1947–1948 Civil War in Mandatory Palestine on April 30, 1948. It was located 10.5 km southeast of Haifa. History A known cave located in the a ..., an Israeli prison near Haifa See also * Damon House (other) {{disambiguation, geo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Penrose, Colorado
Penrose is a census-designated place (CDP) and post office located in and governed by Fremont County, Colorado, United States. The CDP is a part of the Cañon City, CO Micropolitan Statistical Area. The Penrose post office has the ZIP Code 81240. At the United States Census 2010, the population of the Penrose CDP was 3,582, while the population of the 81240 ZIP Code Tabulation Area was 4,323 including adjacent areas. History The community was named after Spencer Penrose. Geography The Penrose CDP has an area of , all land. Demographics The United States Census Bureau initially defined the for the As of the census of 2010, there were 3,582 people, 1,454 households, and 1,044 families residing in the CDP. The population density was . There were 1,575 housing units at an average density of . The racial makeup of the CDP was 94.7% White, 0.2% African American, 1.3% Native American, 0.4% Asian, 1.1% from other races, and 2.3% from two or more races. Hispanic or Latino of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Estes Industries
Estes Industries is a model rocket company that was started in Denver, Colorado, USA. The company was the first to mass-produce model rocket engines with consistent and reliable performance. It is popular among hobbyists of experimental amateur rocketry for its simple and easily accessible engines, accessories, and rocket-building kits. History Estes Industries was founded by Vernon Estes in 1958; in 1961, the company moved to a 77-acre tract of land on the outskirts of Penrose, Colorado. In 1969, Vernon sold the company to the Damon Corporation of Needham, a company which also purchased a number of other hobby companies including a smaller competitor of Estes, Centuri Engineering of Phoenix, Arizona. Damon merged the two companies under the name Centuri Engineering. The Penrose entity continued doing business as Estes Industries. Centuri Engineering model rocket products continued to be developed, marketed and sold from the Centuri offices in Phoenix as well, although th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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