Affiliations: U.S. Army ARDEC, Fuze and Precision Armaments
Technology (RDAR-MEF-E), Picatinny Arsenal, NJ, USA | Raytheon Missile Systems, Tucson, AZ, USA
Note: [] Corresponding author: J.A. Cordes, U.S. Army ARDEC, Fuze and
Precision Armaments Technology (RDAR-MEF-E), Picatinny Arsenal, NJ 07806-5000,
USA. E-mail: [email protected]
Abstract: The Soft Catch Gun at Picatinny Arsenal is regularly used for
component testing. Most shots contain accelerometers which record accelerations
as a function of time. Statistics of accelerometer data indicate that the
muzzle exit accelerations are, on average, higher than tactical firings. For
that reason, Soft Catch Gun tests with unusually high accelerations may not be
scored for Lot Acceptance Tests (LAT) by some customers. The 95/50 Normal
Tolerance Limit (NTL) is proposed as a means of determining which test results
should be scored. This paper presents comparisons of Shock Response Spectra
(SRS) used for the 95/50 scoring criteria. The paper also provides a Discussion
Section outlining some concerns with scoring LAT results based on test results
outside of the proposed 95/50 criteria.
