NTS News Center

Latest News in Testing, Inspection and Certification

NTS News Center - Latest News in Testing, Inspection and Certification

Making of the Mission to Mars: Testing with Liquid Nitrogen & Oxygen

Mars is mysterious because no one has yet been there to colonize and understand the planet for what it really is. How dangerous will it be? Is it logical to aspire to live there? These are questions many might ask themselves.

According to the Space.com article “These People Want to Go to Mars (and Never Come Back)” by Tanya Lewis, there are many people willing to leave their lives on earth behind to find answers. “Applicants over the age of 18 from any country are eligible to apply, and Mars One has received more than 165,000 applications already.”

OC_banner“But what sort of person would go?” says Lewis. Many people are interested in the Mars One mission but will they remain committed once the spacecraft launches into the unknown? It will be a one way trip with no return ticket.

In order to ensure a successful voyage for applicants considered and approved as transportable to Mars, NASA’s Space Launch System (SLS) is helping to create an innovative and advanced spacecraft named Orion. Rigorous testing on every component of Orion is essential. NASA.gov provides some insight into a portion of this process. “The testing will include hydrostatic proof and cryothermal testing with liquid nitrogen, which will simulate liquid oxygen conditions.”

Our NTS San Bernardino laboratory has partnered with NASA, investing over $5 million dollars to create a unique facility performing High Pressure GN2, GH2, GO2, LO2, LN2 and LH2 testing along with specialized tooling. These capabilities have allowed NTS to complete development work for the SLS Common Core Booster on the 1 inch disconnect assembly, fill and drain valve, pre-valve assembly, assorted check valves, the GH2 manifold and the GO2 manifold. NTS is also contracted for qualification testing on the helium regulator, 750 PSIG helium relief valve, check valves and helium filter. In addition, we will be performing seal leakage tests on the SLS LO22 and LH2 tank man entry seal assemblies at cryogenic temperatures.

NTS San Bernardino Nitrogen/Hydrogen Cryogenic Liquid Storage

NTS San Bernardino Nitrogen/Hydrogen Cryogenic Liquid Storage

People aspiring to go to Mars will sacrifice their lives in order to participate in this historic journey. It is important for the aircraft to be viable and safe. This depends heavily on testing performed and providing the important data to assist engineers in completing the final design and construction.

For details on all of NTS San Bernardino’s capabilities, click here for our fact sheet.

NTS San Bernardino Unveils New Quiet Technology Test Facility


An outside view of the test facility

In late 2013, NTS San Bernardino began design and construction on a new quiet technology test facility to support MIL-STD-740-2(SH) for Navy submarine applications. The 17.5’ x 12’ sound proof building houses a system which can output a maximum pressure of 5,500 psig and maximum flow of 20,000 SCFM as well as a minimum pressure of 5 psig and minimum flow of 5 SCFM (standard cubic foot per minute).

The Quiet Technology Flow Loop is composed of nitrogen supply tanks pressurized up to 5500 psi. The nitrogen is supplied with a 3” supply pipe through the test article using a pressure blow down process.  The airborne and structureborne noise levels of the test article are measured at the desired pressures and flow rates using microphones and accelerometers inside the noise chamber.  The GN2 flow rate is set by the control valve and venturi downstream of the test article.

The results of a baseline data test with a closed door and no flow. It was analyzed at 1/3 octave using A weighting

The results of a baseline data test with a closed door and no flow. It was analyzed at 1/3 octave using A weighting

Test data is captured in the adjoining control room where sound measuring capabilities include:

  • 15 db – 140 dB Low level microphones
  • 24 bit resolution Data acquisition
  • Sampling rate up to 100 kHz
  • Up to 8 channels (expandable)
  • DACS capable of automated sequences with redline control

A vent valve quiet element recently passed structureborne noise testing and just yesterday an air reducer assembly passed the airborne noise testing. NTS San Bernardino expects to have the system fully certified by the end of 2014.