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Latest News in Testing, Inspection and Certification

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

Solicitation Alert: Plate Carrier System, Generation II, and Components

Solicitation Title: Plate Carrier System, Generation II, and Components
Issued by: DLA Troop Support

Solicitation Number: SPE1C1-16-R-0172
Solicitation Location: Click here for Solicitation

Issued: 6 October 2016
Response Date: 21 November 2016

First Technical Factor: Ballistic Test Results and Areal Density (page61 of solicitation)

  • The solicitation states that this testing can be performed at a National Institute of Justice (NIJ) Certified Laboratory.
  • Ballistic Testing Data Requirements (testing and requirements describedin Paragraph Sections 3 and 4 of DTL-14007A0000, dated March 18, 2015):
    • Eight (8) shoot packs for 17gr V50’s
    • Eight (8) shoot packs for 9mm V50’s
    • Eight (8) shoot packs for 9mm V0’s
  • Areal Density Data Requirements (testing requirements per Paragraph,, and 4.8.3 of DTL-14007A0000)
    • Provide one (1) shoot pack, not sewn, for Areal Density testing.

Please visit this link for detailed solicitation information and attachments: Click here for Solicitation

Solicitation Primary Point of Contact:
Catherine Dillon, Catherine.Dillon@dla.mil, 215-737-2497

Contracting Office:
700 Robbins Avenue
Philadelphia, Pennsylvania 19111-5096

NTS Wichita and NTS Chesapeake are both NIJ-Certified laboratories with the expertise and availability to perform all ballistic and non-ballistic testing as identified in the Solicitation. Both laboratories have the capacity to accommodate test range needs and provide deliverables within the due dates specified in the Solicitation.

NTS Wichita POC:
Matt Lutz, matthew.lutz@nts.com, 316-832-1600

NTS Chesapeake POCs:
Craig Thomas, craig.thomas@nts.com, 410-297-8154
Kyle North, kyle.north@nts.com, 410-297-8154

The Solicitation Reminder is a service of NTS Wichita and Chesapeake Testing divisions to help our customers uncover Federal Business Opportunities. We hope that you find this a valuable benefit of your
partnership with us.

Methodology for Transient Thermal Analysis of Machine Gun Barrels Subjected to Burst Firing Schedules

Authors: Ryan Hill and Logan McLeod

This work presents a method for simulating the heating of machine gun barrels during burst firings. The method utilizes a two-dimensional axisymmetric finite element model which solves the highly transient convection input on the bore wall, conduction through the barrel, and convective and radiative cooling on the outside wall. The transient input is derived from a coupling of a lumped-parameter interior ballistics code with a one-dimensional compressible flow model which includes the discharge of the combustion product gas behind the projectile. This transient convective boundary condition can be repeated as desired for arbitrary firing schedules. Finally, an example simulation is performed on a small caliber machine gun and compared with experimental data.

Fill out the form below to download a PDF version of this white paper.

Analysis of Inter-Chamber Energy and Mass Transport in High-Low Pressure Gun Systems

Authors: Ryan Hill and Logan McLeod
Two assumptions are often made by lumped-parameter codes in the analysis of dual-chamber guns: (1) that the gas enters the large chamber at the propellant flame temperature, and (2) that the flow between the chambers is that of an ideal gas. An investigation on the effects of these two assumptions was performed by creating three lumped-parameter codes: one that maintains the two assumptions above, and two that conserve flow energy of the gas instead of maintaining a constant temperature. Of the latter two models, one uses an ideal gas and the other uses a noble-abel gas for the flow calculations. In this work, the noble-abel gas equation of state will be discussed in detail as well as its implications to the gas flow. Then, descriptions of the three approaches to the gas flow model will be presented, followed finally by a comparison of simulation results from the three models.

Fill out the form below to download a PDF version of this white paper.