Cannae will try to prove propellentless propulsion in space in
2017 and has ambitious space probe designs with 33 years of
constant acceleration to reach 3% of lightspeed:
"Cannae is not using an EmDrive thruster in their upcoming launch. Cannae is using it’s
own proprietary thruster technology which requires no on-board propellant to generate
thrust. In addition, this project is being done as a private venture. Cannae is only working
with our private commercial partners on the upcoming mission.
Theseus Space is going to be launching a demo cubesat (probably in 2017) which will use
Cannae thruster technology to maintain an orbit below a 150 mile altitude. This cubesat
will maintain its extreme LEO altitude for a minimum duration of 6 months. The primary
mission objective is to demonstrate our thruster technology on orbit. Secondary
objectives for this mission include orbital altitude and inclination changes performed by the
Cannae-thruster technology."
See:
http://www.nextbigfuture.com/2016/12...llentless.html