On supersonic projectile and its special versatile cannon-canister system

Jacob Nagler

doi:10.59400/mea3621

On supersonic projectile and its special versatile cannon-canister system

Jacob Nagler
Nagler Independent Research Center (NIRC), Haifa 34345, Israel

Article ID: 3621

Keywords: miniature rocket projectile, solid propellant, Mach 4, PEEK insulation, Inconel 718, anti-air defense, penetration modeling, launcher systems

Abstract

This manuscript presents the design, analysis, and validation roadmap for a compact 20 mm solid-propellant rocket projectile and an associated family of modular launchers optimized for mid-range interception and anti-armor engagement. The system addresses the capability gap between man-portable anti-armor weapons and high-volume point-defense nodes (CIWS). The propulsion architecture utilizes a high-efficiency AP/HTPB (ammonium perchlorate/hydroxyl-terminated polybutadiene) composite grain housed in a selectively laser-melted Inconel 718 pressure casing. Thermal protection is achieved via an integrated polyether ether ketone (PEEK) liner and graphite-phenolic nose, enabling sustained structural integrity against convective and radiative heat fluxes during the 2.5 s burn. Analytic internal-ballistic and nozzle isentropic calculations predict an exit velocity of approximately 1400 m/s (Mach 4) and an under-expanded supersonic jet profile. Terminal-effect models indicate rolled homogeneous armour (RHA)-equivalent penetration near 116 mm and approximately 140 mm into representative composite laminates, exceeding legacy autocannon performance. A compact, mechanically-armed setback primer ensures reliable, self-contained ignition within 6 ms of barrel exit. Three launcher classes are described: soldier-portable shoulder tube, building-mounted multi-tube interceptor, and adaptive variable-barrel arrays, enabling flexible engagement against modern threats such as unmanned aerial vehicle (UAV) swarms and light armor. Finally, the manuscript details a staged experimental validation plan and an environmental compatibility analysis to ensure operational feasibility, safety, and compliance with modern defense standards regarding emissions and handling.

Published

2025-09-15

How to Cite

Nagler, J. (2025). On supersonic projectile and its special versatile cannon-canister system. Mechanical Engineering Advances, 3(3). https://doi.org/10.59400/mea3621

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Issue

Vol. 3 No. 3 (2025)

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Article

This work is licensed under a Creative Commons Attribution 4.0 International License.

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This study focuses on the development of a cleaning robot, covering the three main aspects of mechanical design, circuit design, and software design. First, in the area of mechanical design, we created a structure capable of agile movement and efficient cleaning to ensure the robot can operate smoothly in various environments. Second, for circuit design, we developed a microcontroller-based control system to coordinate the operation of various components, including drive motors, sensors, and image recognition modules. Furthermore, in the software design aspect, we utilized YOLO (You Only Look Once) and OpenCV technologies to enable the robot to accurately identify and classify waste during the automatic cleaning process. Finally, we conducted practical cleaning experiments to verify the robot’s ability to recognize waste and the accuracy of waste classification. The experimental results show that the cleaning robot not only possesses the ability to recognize waste but also accurately classify it, demonstrating its potential for practical applications.