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A model rocket is a small rocket designed to reach low altitudes (e.g., 100–500 m (330–1,640 ft) for a 30 g (1.1 oz) model) and be recovered by a variety of means. According to the United States National Association of Rocketry (NAR) 's Safety Code, [ 1 ] model rockets are constructed out of lightweight and non metallic parts.
The designation for a specific motor looks like C6-3.In this example, the letter (C) represents the total impulse range of the motor, the number (6) before the dash represents the average thrust in newtons, and the number (3) after the dash represents the delay in seconds from propelling charge burnout to the firing of the ejection charge (a gas generator composition, usually black powder ...
Laid out line charge being used to destroy surplus ammunition. Systems in current use include the British Python minefield breaching system, which can clear a 7.3-metre (24 ft) wide by 180–200-metre (590–660 ft) long path, and the American M58 Mine Clearing Line Charge, which can clear an 8 m wide by 100 m long path. [8]
The M58 mine-clearing line charge (MICLIC) is a rocket-projected mine-clearing line charge used to provide a "close-in" demining capability for maneuver forces of the United States Army and Marine Corps. [1] [2] [3] First fielded in 1988 with United States Army Europe, [4] the MICLIC is a cable fitted with explosive charges.
A high-power rocket lifts off at Taupiri. The New Zealand Rocketry Association is a model rocketry organisation based in Auckland, New Zealand.The NZRA holds launches and meetings bi-monthly at its Taupiri launch site, [1] an hour south of Auckland, and has an annual launch day. [2]
It has similar weight, thrust and duration to Jetex, allowing many old plans for Jetex powered models to be built and flown with the new motors. The Rapier is a single use motor with a cardboard case and a ceramic nozzle, visually closer to a model rocket motor than the original reloadable Jetex.