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Titolo:
Electromagnetic and aeromechanical analysis of sabot discard for railgun projectiles
Autore:
Zielinski, AE; Weinacht, P; Bennett, J;
Indirizzi:
USA, Res Lab, Aberdeen Proving Ground, MD 21005 USA USA Aberdeen Proving Ground MD USA 21005 een Proving Ground, MD 21005 USA USA, Tank Automot & Armaments Command, Armaments Res Dev & Engn Ctr, Picatinny Arsenal, NJ 07801 USA USA Picatinny Arsenal NJ USA 07801 n Ctr, Picatinny Arsenal, NJ 07801 USA
Titolo Testata:
JOURNAL OF SPACECRAFT AND ROCKETS
fascicolo: 2, volume: 37, anno: 2000,
pagine: 257 - 264
SICI:
0022-4650(200003/04)37:2<257:EAAAOS>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
SIMULATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
10
Recensione:
Indirizzi per estratti:
Indirizzo: Zielinski, AE USA, Res Lab, Aberdeen Proving Ground, MD 21005 USA USA Aberdeen Proving Ground MD USA 21005 ound, MD 21005 USA
Citazione:
A.E. Zielinski et al., "Electromagnetic and aeromechanical analysis of sabot discard for railgun projectiles", J SPAC ROCK, 37(2), 2000, pp. 257-264

Abstract

Experimental and engineering modeling techniques were applied to examine the role that electromagnetics plays during the sabot discard process in a solid-armature railgun. Current and magnetic field diffusion in the conducting armature and sabot produce residual forces that tend to clamp:the sabot petals during in-bore acceleration and after launch. The effect of this force on sabot discard was investigated. The experimental portion of this workused the measured downrange magnetic fields to quantity the effect on subprojectile performance. The time rate of change of launcher and switch currents and launcher voltages Were measured. In addition, the time rate of change of the armature magnetic field was measured downrange from the launcher. Electrical parameters that characterize the magnetic fields were used to calculate the residual current flowing in the armature after exit, An engineering model that includes both aeromechanical and electromagnetic forces was developed to predict the sabot discard process. The model for the magnetic clamping force used the inferred current from the magnetic fields measured downrange, The results from the sabot discard analysis are in good agreement with the measured sabot trajectory data, particularly when the sabot petals are in dose proximity. The analysis shows that the aerodynamic moment acting on the sabot is relatively small following launch, and small magnetic clamping forces could delay sabot separation.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/01/21 alle ore 02:23:05