http://www.spinlaunch.com/

Stealth Startup SpinLaunch Raises $40 Million for Radical New Launch Strategy
https://www.space.com/40910-stealth-startup-spinlaunch-new-launch-method...

SpinLaunch raises $40M from Airbus, Google and others for space catapult
https://www.geekwire.com/2018/spinlaunch-raises-40m-airbus-google-others...