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Model Rocket Motor Classification
Motors for model rockets and high-powered rockets (together, consumer rockets) are classified by total impulse into a set of letter-designated ranges, from ⅛A up to O. The total impulse is the integral of the thrust over burn time. : P_ = \int\limits_^F_(t^)dt^ = F_t. Where t is the burn time in seconds, F_ is the instantaneous thrust in newtons, F_ is average thrust in newtons, and P_ is the total impulse in newton seconds. Class A is from 1.26 newton-seconds (conversion factor 4.448 N per lb. force) to 2.5 N·s, and each class is then double the total impulse of the preceding class, with Class B being 2.51 to 5.00 N·s. The letter (M) would represent the total impulse of between 5,120.01 and 10,240.00 N·s of impulse. Motors E and below are considered low power rocket motors. Motors between F and G are considered mid-power, while motors H and above being high-powered rocket motors. Motors which would be classified beyond O are in the realm of amateur rocketry (in this ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Model Rocket
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] |
S-Series (rocket Family)
S-Series is a fleet of sounding rockets funded by the Japan Aerospace Exploration Agency (JAXA) that have been in service since the late 1960s. Manufactured by IHI Aerospace and operated by the Institute of Space and Astronautical Science (ISAS). The nomenclature of the S-Series rockets is the number of "S"s indicates the number of stages, and the following number details the diameter of the craft in millimeters. For example, the S-310 is a single stage rocket with a diameter of 310 mm. On January 14, 2017, the SS-520-4 rocket (modified sounding rocket) attempted to become the lightest and smallest launch vehicle to send a payload to orbit, however, the rocket failed to reach orbit. A second attempt was made on February 3, 2018. This time, the rocket reached orbit and successfully deployed TRICOM-1R (Tasuki), a 3U CubeSat. Its 2018 launch made it the smallest orbital rocket both in mass and height. S-160 A retired single stage Japanese sounding rocket. The S-160 had a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ariane 3
Ariane 3 was a European expendable carrier rocket, which was used for eleven launches between 1984 and 1989. It was a member of the Ariane family of rockets. The principal manufacturer for the Ariane 3 was Aérospatiale, while the lead agency for its development was the Centre National d'Etudes Spatiales (CNES). Development of the Ariane 3 was authorised in July 1979, months prior to the Ariane 1's first flight. Drawing heavily upon both the design and infrastructure of the Ariane 1, the new launcher was concurrently developed alongside the Ariane 2, with which it shared much of its design. It represented an advancement of the Ariane 1 rather than a replacement, but was capable of lifting even heavier payloads into Geostationary transfer orbit (GTO) as well as launching two satellites via one launch. Developed largely within a two year window, the Ariane 3 performed its maiden flight on 4 August 1984, actually flying in advance of its Ariane 2 sibling. During its brief serv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Strela (rocket)
Strela (russian: Стрела, ''arrow'') is a Russian orbital carrier rocket, derived from the Soviet/Russian UR-100NU missile. It conducted its maiden test launch on 5 December 2003, carried its first functional payload on 27 June 2013, and a second one on 19 December 2014. Strela was originally planned to be launched from the Svobodny Cosmodrome, with test launches being conducted from existing UR-100 silos at the Baikonur Cosmodrome. Svobodny was closed in 2007, without seeing any Strela launches. It is unclear whether a Strela launch complex will be incorporated into the Vostochny Cosmodrome, which is being built on the site of Svobodny. Strela differs from the Rockot, which is also derived from the UR-100, in that it has undergone fewer modifications, such as the absence of an additional Briz-KM upper stage, as used on the Rockot. However it is equipped with a repurposed APB as upper stage, which was designed to deliver nuclear warheads. It is also launched from silos, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minotaur-C
Minotaur-C (''Minotaur Commercial''), formerly known as Taurus or Taurus XL, is a four stage solid fueled launch vehicle built in the United States by Orbital Sciences (now Northrop Grumman) and launched from SLC-576E at California's Vandenberg Air Force Base. It is based on the air-launched Pegasus rocket from the same manufacturer, utilizing a "zeroth stage" in place of an airplane. The Minotaur-C is able to carry a maximum payload of around 1458 kg into a low Earth orbit (LEO). First launched in 1994, it has successfully completed seven out of a total of ten military and commercial missions. Three of four launches between 2001 and 2011 ended in failure, including the 24 February 2009 launch of the Orbiting Carbon Observatory mission and the 4 March 2011 launch of the Glory mission, which resulted in losses totalling US$700 million for NASA (excluding the cost of the rockets themselves). The Taurus launch vehicle was subsequently rebranded in 2014 as Minotaur-C, which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
VLS-1
The ''VLS-1'' () was the Brazilian Space Agency's main satellite launch vehicle. The launch vehicle was to be capable of launching satellites into orbit. The launch site was located at the Alcântara Launch Center due to its proximity to the equator. Associated vehicles include the Sonda I, Sonda II, Sonda III and Sonda IV, the VS-30, VS-40 and VSB-30. The VLS was cancelled after decades of development and high expenditures with poor results and a failed association with Ukraine that slowed the program for years. History VLS-1 development started in 1984, after the first launch of the Sonda IV rocket. To date, three prototypes have been built and two launches attempted, departing from the Alcântara Launch Center. During the V1 and V2 prototype launches (VLS-1 V1 and VLS-1 V2) technical problems prevented mission success, but allowed the testing of several vehicle components. The V3 prototype exploded on the launch pad on 22 August 2003, two days before its intended laun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minotaur I
The Minotaur I, or just Minotaur is an American expendable launch system derived from the Minuteman II missile. It is used to launch small satellites for the US Government, and is a member of the Minotaur family of rockets produced by Orbital Sciences Corporation (now Northrop Grumman). Vehicle The Minotaur I is the follow-on to the Orbital Sciences' Taurus (later re-named the "Minotaur-C") launch vehicle, combining the original Taurus's booster stage with a second stage from a Minuteman missile. Minotaur I rockets consist of the M55A1 first stage and SR19 second stage of a decommissioned Minuteman missile. The Orion 50XL and Orion 38, from the Pegasus rocket, are used as third and fourth stages. A HAPS (Hydrazine Auxiliary Propulsion System) upper stage can also be flown if greater precision is needed, or the rocket needs to be able to manoeuvre to deploy multiple payloads. It can place up to of payload into a low Earth orbit at 28.5 degrees of inclination Orb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Falcon 1
Falcon 1 was a small-lift launch vehicle that was operated from 2006 to 2009 by SpaceX, an American aerospace manufacturer. On 28 September 2008, Falcon 1 became the first private spaceflight, privately-developed fully liquid-fueled launch vehicle to go into orbit around the Earth. The two-stage-to-orbit rocket used liquid oxygen, LOX/RP-1 for both stages, the first powered by a single SpaceX Merlin, Merlin engine and the second powered by a single SpaceX Kestrel, Kestrel engine. It was designed by SpaceX from the ground up. The vehicle was launched a total of five times. After three failed launch attempts, Falcon 1 achieved orbit on its Falcon 1#Fourth flight, fourth attempt in September 2008 with a Ratsat, mass simulator as a payload. On 14 July 2009, Falcon 1 made its second and final flight, successfully delivering the Malaysian RazakSAT satellite to orbit on SpaceX's first commercial launch (fifth launch overall). Following this flight, the Falcon 1 was retired and succee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northrop Grumman Pegasus
Pegasus is an air-launched launch vehicle developed by Orbital Sciences Corporation (OSC) and now built and launched by Northrop Grumman. Capable of carrying small payloads of up to into low Earth orbit, Pegasus first flew in 1990 and remains active . The vehicle consists of three solid propellant stages and an optional monopropellant fourth stage. Pegasus is released from its carrier aircraft at approximately , and its first stage has a wing and a tail to provide lift and attitude control while in the atmosphere. Notably, the first stage does not have a thrust vector control (TVC) system. History Pegasus was designed by a team led by Antonio Elias. The Pegasus's three Orion solid motors were developed by Hercules Aerospace (later Alliant Techsystems) specifically for the Pegasus launcher but using advanced carbon fiber, propellant formulation and case insulation technologies originally developed for the terminated USAF Small ICBM program. The wing and fins' structures we ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mercury-Redstone Launch Vehicle
The Mercury-Redstone Launch Vehicle, designed for NASA's Project Mercury, was the first American crewed space booster. It was used for six sub-orbital Mercury flights from 1960–1961; culminating with the launch of the first, and 11 weeks later, the second American (and the second and third humans) in space. The four subsequent Mercury human spaceflights used the more powerful Atlas booster to enter low Earth orbit. A member of the Redstone rocket family, it was derived from the U.S. Army's Redstone ballistic missile and the first stage of the related Jupiter-C launch vehicle; but to human-rate it, the structure and systems were modified to improve safety and reliability. Modifications from the Redstone missile NASA chose the U.S. Army's Redstone liquid-fueled ballistic missile for its sub-orbital flights as it was the oldest one in the US fleet, having been active since 1953 and had many successful test flights.''The Mercury-Redstone Project'', p. 2-2, 3-1. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black Arrow
Black Arrow, officially capitalised BLACK ARROW, was a British satellite carrier rocket. Developed during the 1960s, it was used for four launches between 1969 and 1971, all launched from the Woomera Prohibited Area in Australia. Its final flight was the first and only successful orbital launch to be conducted by the United Kingdom, and placed the Prospero satellite into low Earth orbit. Black Arrow originated from studies by the Royal Aircraft Establishment for carrier rockets based on the Black Knight rocket, with the project being authorised in 1964. It was initially developed by Saunders-Roe, and later Westland Aircraft as the result of a merger. Black Arrow was a three-stage rocket, fuelled by RP-1 paraffin (kerosene) and high test peroxide, a concentrated form of hydrogen peroxide (85% hydrogen peroxide + 15% water). It was retired after only four launches in favour of using American Scout rockets, which the Ministry of Defence calculated to be cheaper than maint ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electron (rocket)
Electron is a two-stage, partially recoverable orbital launch vehicle developed by Rocket Lab, an American aerospace company with a wholly owned New Zealand subsidiary. Electron was developed to service the commercial small satellite launch market. Its Rutherford engines are the first electric-pump-fed engine to power an orbital-class rocket. Electron is often flown with a kickstage or Rocket Lab's Photon spacecraft. Although the rocket was designed to be expendable, Rocket Lab has recovered the first stage twice and is working towards the capability of reusing the booster. The Flight 26 (F26) booster has featured the first helicopter catch recovery attempt. In December 2016, Electron completed flight qualification. The first rocket was launched on 25 May 2017 in a flight called "It's a Test", reaching space but not achieving orbit due to a glitch in communication equipment on the ground. During its second flight on 21 January 2018, Electron reached orbit and deployed three ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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