Foundation/American Heart Association Task Force on Practice Guidelines Update): A Report of the American College of Cardiology Coronary Intervention (Updating the 2005 Guideline and 2007 Focused 2007 Focused Update) and ACC/AHA/SCAI Guidelines on Percutaneous With ST-Elevation Myocardial Infarction (Updating the 2004 Guideline and 2009 Focused Updates: ACC/AHA Guidelines for the Management of Patients

A thruster operable in a chemical mode or in an electrospray mode using the same liquid monopropellant for operation in both modes is described having a multiplicity of a microthrusters made of a catalytic material having a bore therethrough, where, when operated in the chemical mode, the microthrusters are heated to decompose the monopropellant the monopropellant flows therethrough to generate relatively high thrust. An extractor is positioned downstream of the outlet ends of the microthrusters, such that when the system is operated in its electrospray mode the flowrate of the monopropellant through the microthrusters is substantially lower than in the chemical mode and the extractor is energized with an electric field so that ions and droplets are discharged from the microthrusters and accelerated so as to yield a relatively high specific impulse.