Shaped Charge Jet Initiation Tests with Covered High Explosive Charges with Air Gaps

2001 ◽  
Vol 26 (1) ◽  
pp. 38-42 ◽  
Author(s):  
Manfred Held
Keyword(s):  
High Explosive ◽  
Shaped Charge ◽  
Air Gaps ◽  
Explosive Charges ◽  
Shaped Charge Jet ◽  
Jet Initiation

Filling the Gap between Hypervelocity and Low Velocity Impacts

2019 ◽  
Author(s):  
Werner Arnold ◽  
Thomas Hartmann ◽  
Ernst Rottenkolber
Keyword(s):  
High Explosive ◽  
Hypervelocity Impact ◽  
Shaped Charge ◽  
Low Velocity ◽  
Projectile Velocity ◽  
Critical Stimulus ◽  
Velocity Impact ◽  
Hypervelocity Impacts ◽  
Explosive Charges ◽  
Shaped Charge Jet

Abstract During more than one decade of studying initiation phenomenology numerous papers at the previous HVIS and other symposia ([1] - [12]) were published. Most of them dealt with the hypervelocity impact initiation of plastic bonded high explosive charges by shaped charge jets (SCJ) and a few ones reported results in the ordnance velocity impact regime with STANAG projectiles and explosively formed projectiles (EFP) ([2] & [11]). A recent finding of our investigations of shaped charge jet (SCJ) attacks suggests that the critical stimulus S = v2∙d (v = SCJ / projectile velocity; d = SCJ / projectile diameter) for the initiation of a munition can no longer be seen as a constant (S ≠ const.) ([11] & [10]). Also, known equations, e.g. Jacobs-Roslund [13], are not capable to describe low velocity and hypervelocity impacts with the same parameter set.

Shaped‐Charge Jet‐Initiation of Covered RDX‐Based Aluminized Explosives and Effect of Temperature

2020 ◽  
Vol 45 (9) ◽  
pp. 1443-1453
Author(s):  
Pin Zhao ◽  
Lang Chen ◽  
Kun Yang ◽  
Yiwen Xiao ◽  
Kaining Zhang ◽  
...  
Keyword(s):  
Shaped Charge ◽  
Effect Of Temperature ◽  
Shaped Charge Jet ◽  
Jet Initiation

scholarly journals Development and Evaluation of Small Shaped Charge Jet Threats

2017 ◽  
Vol 8 (1) ◽  
pp. 23-38
Author(s):  
Arthur DANIELS ◽  
Stan DEFISHER ◽  
Greg STUNZENAS ◽  
Nausheen AL-SHEHAB ◽  
Ernest L. BAKER
Keyword(s):  
Lower Cost ◽  
Threat Assessment ◽  
Shaped Charge ◽  
International Standards ◽  
High Rate ◽  
Continuum Models ◽  
Severe Reaction ◽  
Explosive Charges ◽  
Shaped Charge Jet ◽  
Aluminium Target

Because of their prolific nature on the battlefield, rocket propelled and gun-launched grenades are of particular concern to the soldier, particularly because of the severe reaction that occurs when a munition is hit by the shaped charge jet. As a result of the danger that such a detonation poses, it is necessary to more precisely understand the behaviour of munitions subjected to these types of devices. In response to these threats, standardized 81 mm and 40 mm shaped charge warheads were developed for use during threat assessment testing to act as a consistent, lower-cost representative of shaped charge projectiles commonly encountered on the battlefield, and to help quantify the interaction of these jest with explosive charges. The international standards for shaped charge jet threat testing uses the Held initiation criteria V2D, where V is the jet velocity and D is the diameter. V2D was computationally predicted using the high-rate continuum models CALE and ALE-3D. The surrogate warheads were test fired through aluminium target plates to strip off jet mass to adjust the V2D to the threat munition.

Study on Shaped Charge Jet Initiation of Solid Rocket Motors

2019 ◽  
Author(s):  
Hao CUI ◽  
Rui GUO ◽  
Pu SONG ◽  
Jinsheng XU ◽  
Xiaohui GU ◽  
...  
Keyword(s):  
High Speed ◽  
Shaped Charge ◽  
Solid Rocket Motors ◽  
Rocket Motors ◽  
Jet Impact ◽  
Solid Rocket ◽  
Battlefield Environment ◽  
Shaped Charge Jet ◽  
The Impact ◽  
Jet Initiation

Abstract In order to study the mechanism of initiation of solid rocket motors under the impact of shaped charge jets, a shaped charge jet initiation test was experimentally studied to evaluate the safety of the motor under attack in the battlefield environment. The ex-perimental results indicated that the motor had a detonation reaction under the shaped charge jet impact. The response of the mo-tor was recorded by a high-speed camera. In addition, the mechanism of initiation of the propellant charge was evaluated using by numerical simulations. Pressure-time and reaction-time curves of propellants were analyzed in this paper.

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