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Static and Dynamic Modeling of MIL-STD-1760 Umbilical Separation Using Empirically Determined Friction Coefficients

Document Type

Article

Publication Date

1-6-2020

Abstract

The success of an aircraft’s weapon release system is imperative for mission success. A failure in the weapon release system jeopardizes the aircraft’s mission, the pilot’s life, and can potentially cause thousands of dollars worth of damage to the aircraft. MIL-STD-1760 umbilicals are used extensively to attach aircraft weapon stores to the aircraft. A successful release of the umbilical connector from the receptacle is necessary for mission success. Therefore, a mathematical model is needed to predict the behavior of the umbilical connector separating from the receptacle during weapon release. This research models the release of the 1760 umbilical connector from the receptacle using both a static and dynamic model. This model includes the friction force between the threads to etter understand the connector’s release from the receptacle. The friction coefficients used to model the umbilical and receptacle threads were found experimentally. Pull tests were conducted using a MTS machine and the samples were weighed each run to quantify any mass loss. A high speed camera captured the connector release and an accelerometer collected the acceleration of the connector. Applying this friction-based model will allow researchers to better understand 1760 umbilical release dynamics, leading to safer aircraft.

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Conference Session: Survivability - General Considerations

Source Publication

AIAA Scitech 2020 Forum (ISBN 978-1-62410-595-1)

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