Marman clamp

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Aerospace pipe fittings, with flanges for Marman clamps.
Left is a semi-rigid bleed air duct from a jet engine
Right is semi-flexible fuel hose.

A Marman clamp is a type of heavy-duty band clamp; it allows two flat cylindrical interfaces to be simply clamped together with a ring clamp. It is sometimes also known as a "Marman ring".

Marman clamps are used extensively in spaceflight systems, and are common mechanical load transfer and clamping mechanisms for connecting the upper stage and the satellite payload of space vehicles,[1] for example on the Cassini Plasma Spectrometer on the Cassini orbiter. They may also be used to join stages of a booster rocket.[1]

A common use for Marman clamps is as quick-disconnect connectors in wide-diameter fuel lines.[citation needed]

The Marman clamp was first produced by Herbert Marx, better known by his stage name of Zeppo Marx[2]; it was manufactured by his company, Marman Products.[3] At the time it was designed to secure cargo during transport. The U.S. Military used it to transport the atomic bombs used at the end of the Second World War.

Marman clamps are found in many modern moving vehicles, though the screw band type clamp is becoming more popular.

The name is often incorrectly spelled "Marmon".[citation needed]

See also

References

  1. ↑ 1.0 1.1 "Marman Clamp System Design Guidelines". Guideline no. GD-ED-2214. NASA. Retrieved 2012-10-20. 
  2. ↑ Chandler, Charlotte. Hello, I Must Be Going: Groucho And His Friends, page 182, ISBN 978-1-84739-104-9.
  3. ↑ Trevor Homer Born in the USA: The Book of American Origins,Skyhorse Publishing Inc., 2009 ISBN 1602397112 "Zeppo Marx"

External links

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