** Shares of Aurora Labs A3D.AX rise as much as 26.2% to A$0.053, a peak since May 26
** Logs biggest intraday pct gain since September 10
** Stock last up 11.9% at A$0.047
** 3D printer maker wins A$450,000 Phase 2 defence contract with Australian Department of Defence for prototype manufacture and testing of fuel-efficient propulsion system
** Propulsion system is mechanism which powers and moves vehicle forward
** About 2.7 mln shares traded, 5.8x the 30-day average
** YTD stock down 40.5%, including current session's move
(Reporting by Ananya Verma in Bengaluru)
((ananya.verma@thomsonreuters.com;))