Really good questions. We aren't sharing the details of the technical design quite yet (but will have more to say as we approach first flight). Regarding engin

Really good questions. We aren't sharing the details of the technical design quite yet (but will have more to say as we approach first flight). Regarding engines: our first prototype (1/3 scale) flies with an off-the-shelf GE engine. For the product airplane, we're taking an existing subsonic engine and adapting it for supersonic flight. (Sorry, I know that's vague—much more to say about this in due time.)