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Encyclopedia > Sounding rocket

A sounding rocket, sometimes called an elevator research rocket, is an instrument-carrying suborbital rocket designed to take measurements and perform scientific experiments during its flight. A Redstone rocket, part of the Mercury program A rocket is a vehicle, missile or aircraft which obtains thrust by the reaction to the ejection of fast moving exhaust gas from within a rocket engine. ...

The rockets are commonly used to take readings or carry instruments from 50 to 200 km above the surface, the region above the maximum altitude for balloons and below the minimum for satellites. The term "sounding" is taken from the maritime expression. Certain sounding rockets, such as the Black Brant X and XII, have an apogee between 1,000 and 1,500 km, well above Low Earth Orbit. Balloons are often used or given on special occasions, like greeting cards or flowers. ... A satellite is any object that orbits another object (which is known as its primary). ... Sounding can refer to: Determination the depth of water usually in the sea. ... The Black Brant is a Canadian-designed sounding rocket built by Bristol Aerospace in Winnipeg, Manitoba. ... This article is about several astronomical terms (apogee & perigee, aphelion & perihelion, generic equivalents based on apsis, and related but rarer terms. ... A low Earth orbit (LEO) is an orbit in which objects such as satellites are below intermediate circular orbit (ICO) and far below geostationary orbit, but typically around 350 - 1400 km above the Earths surface. ...

A common sounding rocket consists of a solid-fuel rocket motor and a payload. The freefall part of the flight is an elliptic trajectory with vertical major axis and the average flight time is less than forty minutes. The rocket consumes its fuel on the first stage of the rising part of the flight, then separates and falls away, leaving the payload to complete the arc and return to the ground with a parachute. The Space Shuttle Columbia is initially launched using solid-fuel boosters Solid rockets are rockets with a motor that uses solid propellants (fuel/oxidizer). ... Freefall or free fall in the strict sense is the condition of acceleration which is due only to gravity. ... Two bodies with similar mass orbiting around a common barycenter with elliptic orbits. ... The Apollo 15 capsule landed safely despite a parachute failure. ...

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