Preliminary results of velocities and deceleration of aluminum, magnesium, zirconium, tantalum, pyrofuze and titanium particles burning in steam
Loading...
Authors
Kol, Jacob
Chozev, Yair
Berger, Mati
Subjects
Velocity, Deceleration, Particles, Burning, Combustion, Aluminum, Magensium, Zirconium, Tantalum, Pyrofuze, Titanium, High Speed Photography
Advisors
Date of Issue
1985-07
Date
1985-07
Publisher
Monterey, California. Naval Postgraduate School
Language
Abstract
The energy released by metals burning in steam has several important applications including torpedo propulsion, nuclear reactor safety, underwater vehicles, underwater ordnance, etc. For investigation of shaped charge performance, velocities and decelerations of the burning particles are important parameters that can be used for aerodynamic drag studies as well as for studies of different burning mechanisms. Wires of various metals were exploded in a steam atmosphere. The metals investigated were aluminum, magnesium, tantalum, zirconium, pyrofuze, and titanium. Exploding wires generated numerous hot, small particles. Using high speed photography, velocities and decelerations were measured. Typical results are as follows: aluminum particles initial velocity 26 + or - 0.74 m/s and deceleration of 8075 m/sq. s zirconium (ejected from 1 mm diameter wire) particles initial velocity is from 5 to 11 + or - 0.47 m/s and deceleration is from 200 to 635 m/sq. s; zirconium (ejected from 0.127 mm diameter wire) particles initial velocity is from 1.25 to 1.6 + or - 0.47 m/s and acceleration 16 m/sq. s; magnesium particles initial velocity from 27 to 34 + or - 0.43 m/s and deceleration from 3300 to 6750 m/sq. s; tantalum (ejected from 1 mm diameter wire) particles initial velocity is 5.9 + or - 0.74 m/s; pyrofuze (ejected from 0.5 mm diameter wire) particles initial velocity is from 1.25 to 1.6 + or - 0.74 m/s and deceleration from 3700 to acceleration of 200 m/ sq. s; titanium titanium (ejected from 0.127 mm diameter wire) particles initial velocity is 0.6 + or - 0.43 m/s and acceleration of 15 m/sq. s.
Type
Technical Report
Description
Series/Report No
Department
Identifiers
NPS Report Number
NPS-67-85-005CR
Sponsors
Naval Surface Weapons Center, White Oak Laboratories
Funder
Funding number: N00178-04-D-4045/V701.
Format
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.