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Shock

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91HITS Horizontal Impact Test System

The Challenge

The US Army needed outside expertise in designing a horizontal impact test system which could simulate the horizontal energy associated with IED explosions in a controlled laboratory environment.

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The Solution

The 91 HITS is a two sled design–an impact sled and a test sled. The impact sled  is pneumatically fired into the test sled. Impact velocity changes as high as 34 mph (15 m/s) and accelerations upwards of 500g. Impact energy sufficient to throw a 250 lb. (113 kg.) soldier nearly four stories (38 ft. / 12 m) into the air.

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Vertical Impact Test System (VITS)

The Challenge

The US Army needed outside expertise in developing a laboratory test system that can replicate the multiple vertical shocks and impact energy associated with the dynamic response that results from an explosion underneath a ground vehicle.

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The Solution

Lansmont designed the Vertical Impact Test System (VITS), called Crew Seating Blast Effects Simulator (CSBES) by the Army Research Lab.  The system is capable of generating multiple programmable impact events.  For the initial shock event, the stationary table is impacted by a 1,200 lb. bullet fired by a pneumatic piston.  This creates enough energy to drive the shock table with a 650 lb. test dummy at a velocity of 7 meters per second.

To simulate the dynamic conditions of a blast response, the VITS generates three programmed impacts per event:

  • Initial impact to the feet area
  • Main shock event to table
  • Ensuing “after shock” coming from vehicle’s landing, known as “slam down

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HSXX20 Shock Test System

The Challenge

Certain products and components must survive extreme impact events. Consider the case of the fuze attached to penetrating ordinance—the “bunker buster” bomb. In order to provide the intelligence for the munitions, it must survive extreme impacts and continue to function.

To simulate these extreme impact events, Air Force Research Laboratory (AFRL) required a shock system capable of:

  • Maximum velocity change up to 150 ft./sec (45 m/sec).
  • Maximum acceleration amplitudes up to 25,000 g’s

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The Solution

The performance requirements would lead to the fastest vertical shock system that Lansmont has built to date. The HSXX20 Shock Test System utilizes a unique, revolutionary new design feature—the “active” seismic base. The active seismic is attached to a nitrogen‐charged piston and is accelerated upwards towards the falling table during the shock test.

With this additional performance boost, the HSXX20 can generate maximum velocity changes up to 180 ft./sec (54.9 m/sec). This results from the shock table going from 0 to 122 mph in less than 40 feet.

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Mortar Plate Test System (MPTS)

The Challenge

A 120 mm mortar produces forces of over 350,000 pounds when fired. High firing rates affect the reliability and life of the baseplates that support these mortar systems. The Mortar Plate Test System (MPTS) replicates the forces experienced during live fire with a cycle rate over 10 impacts per minute.

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The Solution

The MPTS uses high pressure air to fire steel “bullets” into a specialized hydraulic programmer and fixture which transmits the desired impact pulse into the baseplate. The MPTS will allow the Army to develop new baseplate designs that reduce the load on soldiers, allowing them to maneuver more quickly and with less effort while maintaining baseplate reliability standards.

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Model 122-213 Shock Test System

The Challenge

Testing a supercomputer poses some unique challenges. Subassemblies and components need to be evaluated for reliability as well as the much larger completed system. One of the world’s top supercomputing companies approached Lansmont about designing a shock test system capable of not only testing sub-assemblies, but also the entire supercomputer itself.

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The Solution

Lansmont delivers the 122-213K Shock Test Sysetm. This machine’s 122cm x 213cm, 8,000 lb. capacity test bed represents the largest fully capable Damage Boundary test system Lansmont has ever assembled. Supercomputers are now easily and entirely tested on Lansmont super machines!

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