April 23 (Reuters) - Orbital Corporation Ltd OEC.AX :
* ORBITAL CORPORATION LTD - ORBITAL UAV SIGNS NEW CONTRACT WITH NORTHROP GRUMMAN
* ORBITAL CORPORATION LTD - CONTRACT FOR DEVELOPMENT OF HYBRID PROPULSION SYSTEM FOR VERTICAL TAKE-OFF AND LANDING UNMANNED AERIAL VEHICLE
* ORBITAL - DEVELOPMENT & DESIGN CONTRACTS WILL NOT IMPACT FY REVENUE VIEW OF $25-$35 MILLION