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DSTI Delivers High Priority Defense Project at 'Mach' Speeds
Published on August 9, 2021The Arnold Engineering Development Complex (AEDC) located at Arnold Air Force Base in Tennessee, recently upgraded their wind tunnel testing system with a custom-engineered DSTI rotary union.
MINNEAPOLIS, Minn. - August 9, 2021 - The Arnold Engineering Development Complex (AEDC) located at Arnold
Air Force Base in Tennessee, recently upgraded their wind tunnel testing system with a custom-engineered
DSTI rotary union.
AEDC provides testing services for the development support of the Department of Defense, NASA and commercial
aerospace systems. The facility boasts the world's largest and most complex collection of aerodynamic and
propulsion wind tunnels, rocket and turbine engine test cells, space environmental chambers and ballistic
ranges with capabilities for subscale to full-scale models at speeds ranging from subsonic to
hypersonic.
Continuous rotation was unachievable with their current equipment as the piping system restricted movement
to less than 360 degrees. Utilizing a fluid rotary union allows continuous rotation for significantly
improved testing efficiency and collection of new data currently unavailable with the existing
design.
"This project had a Department of Defense priority rating, which required it to take precedence over all
other non-national defense projects here at DSTI," said project manager Adam Wisker.
"We were up against a very compressed schedule and were also facing new challenges with supply chain
disruption as a result of the current global pandemic," Wisker added.
The engineering team at DSTI developed a creative solution for the high-pressure, high-flow volume (3,000
PSI 3" flow passage) air/gas requirements utilizing past knowledge and experience from subsea applications.
In addition, other proprietary design features were incorporated which resulted in minimizing material
diameter to reduce the linear sealing distance allowing use of more readily available sealing
components.
"After providing our requirements for a high pressure rated rotary union, DSTI worked with us to refine our
needs and generate a design that fulfilled these requirements meeting our stringent acceptance criteria,"
said Kristyn Nivins, Project Manager, Arnold Engineering Development Complex at Arnold Air Force
Base.
"The first and current implementation of the system nearly doubled a capability required for the test and
evaluation of a high priority Department of Defense weapon system," Nivins said, adding "they expedited the
process at every possible opportunity to meet our extremely tight schedule, stepping up to meet the needs of
the Nation."
The team delivered the product early, saving over four weeks of schedule which enabled the program to meet a
critical milestone and prevent a 6-month delay in fielding.
DSTI's rotary union will be used on all future high pressure air wind tunnel tests at AEDC, significantly
advancing testing capabilities for critical aerospace and defense developments.
Image Credits: Arnold Engineering Development Complex; Arnold Air Force
Base
About The Arnold Engineering Development Complex
The Arnold Engineering Development Complex (AEDC) operates aerodynamic and propulsion wind tunnels, rocket
and turbine engine test cells, environmental chambers, arc heaters, ballistic ranges, sled tracks,
centrifuges and other specialized units.
Headquartered at Arnold Air Force Base in Tennessee, AEDC offers a suite of test capabilities to simulate
speed, temperature, pressure and other parameters over a wide range to meet the needs of aerospace system
developers.
Dynamic Sealing Technologies, Inc. (DSTI) specializes in the design and manufacturing of application-specific fluid solutions worldwide. DSTI's engineered fluid sealing products transfer hydraulic oil, chemicals, water, air, and a variety of other liquids and gases for rotating applications. The company offers custom integrated solutions to meet the unique design, manufacturing, testing, and qualification requirements of each project. DSTI has a full line of in-stock, standard fluid and electrical products including fluid rotary unions and electrical slip rings designed to meet a wide range of industrial applications.
