Shock Mitigation Seats Test


  1. Langlois, R.
  2. Alam, Z.
  3. Wice, A.
  4. Afagh, F.
Corporate Authors
Defence R&D Canada - Atlantic, Dartmouth NS (CAN);Carleton Univ, Ottawa ONT (CAN) Dept of Mechanical and Aerospace Engineering
High Speed Craft (HSC) passengers and crew can be exposed to high levels of repeated shock loading as a result of routine operation in elevated seas. Considerable attention is currently focused on mitigating the potentially adverse effects through the use of suspension seat technology. To support research into the behaviour and performance of HSC seating, a project to develop a single impact drop test device was initiated by DRDC Atlantic. As part of this project, the Carleton University Applied Dynamics Laboratory has investigated alternative drop test rig arrangements and has designed, built, and demonstrated a custom-designed drop tower for the purpose of HSC seat testing. This report presents the work undertaken as part of the project. A literature review examined contemporary drop test equipment with an emphasis on devices appropriate for testing shock mitigation seats as used in small, high speed marine craft. A dynamic model of drop testing was developed such that it could be used to guide the detailed design of a single-impact drop test device. Based on this, an appropriate drop tower was designed, constructed, instrumented, and evaluated. To ensure that the Carleton Drop Tower met its design requirements, a sample drop test was successfully performed. The results of this drop test are also presented and discussed in the report. The resulting test apparatus provides a facility to support investigation of the dynamics of suspension seating when exposed to large, stocha

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Report Number
DRDC-ATLANTIC-CR-2012-252 — Contract Report (Final Report)
Date of publication
01 Nov 2013
Number of Pages
Electronic Document(PDF)

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