Design Accelerations for the Army's Excalibur Projectile

Cordes, J. A.; Vega, Julio; Carlucci, Donald E.; Chaplin, Raymond

doi:10.21236/ada435761

Cited by 6 publications

(4 citation statements)

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“…Excalibur, a 155mm precision guided projectile, was test-fired with a variety of propellant charges while it was being developed. The reliability, structural integrity, and performance of various charges were tested, according to Cordes et al's report [33]. The accelerations and pressures from several tests with various propellant charges are also compiled in their research.…”

Section: Review Of Literaturementioning

confidence: 99%

Estimation of stresses on 155mm artillery projectiles during launch phase using numerical simulations

Catovic,

Razic,

Kljuno

2024

PEN

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The paper provides an overview of research (analytical, numerical, and experimental methods) related to the stress state of artillery projectiles during movement through the barrel of the weapon. The characteristics of the 155mm HERA M549 and 155mm HE M795 projectiles, used in numerical simulations, are described. As a main goal of the research, numerical simulations were performed with the 155mm projectiles to determine the maximum equivalent stresses that occur during the launch of this ammunition. The obtained values were compared with the yield limit of the materials of the projectile components, in order to assess whether the plastic deformation would occur during the launch phase.

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Section: Review Of Literaturementioning

confidence: 99%

Estimation of stresses on 155mm artillery projectiles during launch phase using numerical simulations

Catovic,

Razic,

Kljuno

2024

PEN

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“…These impacts sometimes cause low-cycle fatigue which is not included in the SRS assumptions. If one compares the number of impacts in the Rail Gun (a system similar to the Soft Catch Gun), the Soft Catch Gun, and the near-tactical configuration, one sees many more impacts for the Picatinny Rail Gun and Soft Catch Gun [1][2][3][4][5][6]. Sub-systems that repeatedly survive the Picatinny Rail Fun nearly always have high reliability in the tactical configurations.…”

Section: Low-cycle Fatiguementioning

confidence: 99%

“…When failures occur, they are investigated, root cause is determined and improvements are made. Most of these tests are instrumented with pressure gages, accelerometers or both [1][2][3][4][5][6][7]. Accelerometer data is reviewed for trends, used for failure reviews, and utilized in design and redesign of components [8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Shock Response Spectrum for Different Gun Tests

Cordes

Lee

et al. 2013

Shock and Vibration

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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.

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“…3. The gun barrel model used in the simulation is a simplification of the actual gun tube considering that the bore evacuator has an effect on launch dynamics [13]. [14] is used to simulate the motion of the projectile.…”

Section: Description Of the Projectile And Gunmentioning

confidence: 99%