Finally. A simple, reliable, affordable, easy-to-use device for producing free-free boundary conditions in dynamic testing of structures. Every modal test engineer knows the problem: how to support a test article such that test results are not corrupted by uncertainties in support conditions. How to make it "float" as if there were no gravity? Bungee cords, coil springs, or other home-grown solutions may be marginally adequate for structures with first frequencies of 30 Hz or higher but even then, expensive test data can be corrupted by suspension stiffness, mass, modes, and worst of all, friction. Tests of low frequency modes or rigid-body (zero frequency) modes demand a much better zero-g simulation.

Derived from research for NASA and the Air Force, the Dash-Zero suspension device uses a unique frictionless air spring to produce plunge frequencies below 0.2 Hz for payloads from less than 50 lb to 350 lb per device. Its simple construction and light weight make it easy to install, operate, and maintain. Best of all, its cost is much less than the 60350-DA active-passive device from which it is derived.

For more information, you can download a color brochure in pdf format. The brochure contains all the Dash-Zero information on this web page and much more, including product specifications. You can also contact david.kienholz@csaengineering.com with questions about this product.

Click here to download.

Zero-Gravity Suspension Device