Transient resonance of rolling finned projectiles
نویسندگان
چکیده
منابع مشابه
Microspoiler Actuation for Guided Projectiles
The goal of this project was to further mature microspoiler technology to the extent that it could be incorporated into current and future smart weapons designs. Several program objectives, including mechanical design and fabrication, trade study analysis, and limited flight experiments were defined as a collaborative effort between the Georgia Institute of Technology (Georgia Tech) and the Arm...
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OBJECTIVES (a) To determine the force-time trace that occurs when a spring mounted simulated upper jaw is impacted; (b) to examine if mouthguards of variable quality have significant influence on such force-time traces; (c) to attempt to relate physical events to the profile of the force-time traces recorded. METHODS A simulated jaw, consisting of ceramic teeth inserted into a hard rubber arc...
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In a multi-board computer system, the volume allocated for heat removal is often a significant fraction of the total system volume. Cooling requirements can thus impact performance, reliability, cost, acoustic noise, and floorspace. This work addresses the volume costs or space requirements for removing heat with optimally designed finned heat sinks. Simple formulas applicable to both gas and l...
متن کاملDeceleration of projectiles in sand
Penetration of projectiles was measured for hemispherical and conical nose shapes penetrating granular media. Targets were beds of Ottawa sand and Eglin sand. Projectiles were rigid metals. Experimental parameters that were varied included velocity (from 300 to 600 m/s), nose shape, sand density, and scale (from 5 mm to 20 mm). Strong evidence for scale effects is found: 5 mm diameter projectil...
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ژورنال
عنوان ژورنال: Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering
سال: 1999
ISSN: 0954-4100,2041-3025
DOI: 10.1243/0954410991532873