Innertial Forces with an Impact on the Parts of an Artillery Shell When Fired

2018 ◽  
Vol 24 (3) ◽  
pp. 124-129
Author(s):  
Galina Ivanova

Abstract The present work studies the inertial forces arising during the movement of an artillery projectile when it is fired. It describes the effect of these forces on the details of an independent power source that is part of a defence product. In the course of the study, chemical sources of electricity of a new type have been constructed. They are used to study the effect of their mass on the performance of the final product

2016 ◽  
Vol 12 (02) ◽  
pp. 20
Author(s):  
Haifeng Lin ◽  
Ruili Mao

The accumulator can store the energy in high capacity, and the super capacitor can charge and discharge in high power. The mixed power source composed by the accumulator and super capacitor not only has the characteristics for both of them but also meets the high-power requirement of high capacity and peak value. How to perform the equalizing charging for multiple power packs is a emphasis in the industry currently. On the basis of analysis for multiple equalizing charging methods, a new type of design scheme based on DC/DC and switch matrix is raised in this project, the thinking of intermittent charging mode is adopted and four BCAP0350 is served as the charging sample to perform the charging and discharging experiment as well as verify the composite charging design scheme is provided with the feasibility.


2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Avigail D. Amsel ◽  
Arkady Rudnitsky ◽  
Zeev Zalevsky

Implantable wireless devices may allow localized real-time biomedical treating and monitoring. However, such devices require a power source, which ideally, should be self-powered and not battery dependent. In this paper, we present a novel self-powered light therapeutic device which is designed to implement blood irradiation therapy. This device is self-powered by a miniaturized turbine-based generator which uses hydraulic flow energy as its power source. The research presented in this paper may become the first step towards a new type of biomedical self-operational micromechanical devices deployed for biomedical applications.


2010 ◽  
Vol 29-32 ◽  
pp. 2404-2409
Author(s):  
Chang Ping Zou

Actuator is a kind of rotary mechanism whose power source is the hydraulic pressure oil, which demands that the ratio of torque to deadweight is big ,and efficiency is high ,and reliability is great. On the base of ball helical transmission, this paper puts forward a new type of actuator ,the advanced actuator, which possesses several advantages, such as the ratio of torque to deadweight is big , transmission efficiency is high , impact is minuteness, life span is long, reliability is great, satisfying the demands of an advanced aircraft. This paper mainly introduces the working principle of the new type of actuator, 3D parametric modeling technologies of key parts.


2011 ◽  
Vol 66-68 ◽  
pp. 1234-1239 ◽  
Author(s):  
Sheng Yao Gao ◽  
De Shi Wang ◽  
Qi Zheng Zhou

To control the inertial forces and moments, the new type of the reciprocating cam engine with counter-position placement has been invented. Such a thermodynamic model based on the kinematic and dynamic analysis is developed and the engine performance is simulated. Under the same structural design parameters, the counter-position placement cam engine would have the inadequate work due to the increase of throttle loss. Then effects of the gas distributions to the dynamic performance of the engine are researched. Six variables are selected to optimize maximum average indicated power and the minimum indicated specific consumption with the method of discrete variable gridding. The results indicate that: (a) The new engine structure design can present advantage of excitation forces balance. (b) The structural design parameters and the thermal efficiency of the engine should be optimized especially those of the valve actuating mechanism to achieved desired power. (c) The parameters optimized of valve train can conform to the requirements of speed and economy, and it is feasible and reasonable to put forward the scheme of cam engine with the counter-position placement.


2012 ◽  
Vol 249-250 ◽  
pp. 382-385
Author(s):  
Chang Ping Zou ◽  
Jian Qiong Feng

Actuator is a kind of swaying mechanism whose power source is the hydraulic pressure oil, which may be widely applied to varied occasions where need swaying mechanisms, such as aircraft, tank, ship, train, etc. An aircraft needed a most advanced actuator which can produce torque up to 28kg•m with its unit weight, and set strict demands on such indexes as weight, dimension. According to existing plan, an actuator was designed and manufactured, being far inferior to requirement, which adopted a complex gear train composed of 2K-H and 3K planetary reductors. On the basis of analyzing existing dozens of reductors, a new structure that achieves swaying with multi-start ball guide screw driven by reciprocating piston rod of high-pressure oil cylinder was put forward. Having analyzed and compared more than ten new type of plans, a structural model of straight-rotary ball pair was proposed, an ideal plan of identical radius ball-return was found, a new spatial tight ball-return curve was designed, and the optimal design of the advanced actuator was finished. Computer simulation and prototype experiment made clear that each index of the advanced actuator could satisfy the aircraft’s demand.


2009 ◽  
Author(s):  
Xiaoling Yang ◽  
George H. Miley ◽  
Heinz Hora ◽  
Glen A. Robertson

1984 ◽  
Vol 75 ◽  
pp. 743-759 ◽  
Author(s):  
Kerry T. Nock

ABSTRACTA mission to rendezvous with the rings of Saturn is studied with regard to science rationale and instrumentation and engineering feasibility and design. Future detailedin situexploration of the rings of Saturn will require spacecraft systems with enormous propulsive capability. NASA is currently studying the critical technologies for just such a system, called Nuclear Electric Propulsion (NEP). Electric propulsion is the only technology which can effectively provide the required total impulse for this demanding mission. Furthermore, the power source must be nuclear because the solar energy reaching Saturn is only 1% of that at the Earth. An important aspect of this mission is the ability of the low thrust propulsion system to continuously boost the spacecraft above the ring plane as it spirals in toward Saturn, thus enabling scientific measurements of ring particles from only a few kilometers.


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