By Topic

Temperatures From Spectroscopic Studies of Hot Gas and Flame Fronts in a Railgun

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Weimer, J.J. ; Mol. Interfaces & Tribology Sect., Naval Res. Lab., Washington, DC, USA ; Singer, I.L.

High-speed video (143 kframes/s) and optical spectroscopy (1-ms integration, 188-1100 nm) recorded light-emission events occurring at a railgun by aiming directly down the bore or at the backside of the breech. Blowback was marked by a wave of high-intensity light, smoke, a flame front, and glowing particles traveling back up the bore from the muzzle and lasting up to or beyond 60 ms after launch. Spectra taken down bore and during blowback had signature peaks for alkali metals, AlO, and CuO. Estimated radiation temperatures TER were determined by fitting a Planck distribution to the spectral backgrounds. In the bore, TER was between 3700 K and 3000 K at the start of travel and cooler (2500 K) at the muzzle blast. During blowback, TER ranged from 2400 K to almost 4000 K, the combustion temperature of Al particles. Some shots showed TER consistently around 3600 K during the entire blowback period.

Published in:

Plasma Science, IEEE Transactions on  (Volume:39 ,  Issue: 1 )