I don't know. It seems like sub-orbital flight is mainly recreational, and not actually for transportation. Plus, sub-orbital flight appears to be more expensive than supersonic flight. I found a couple of sources on this:
Supersonic again? Really. Technology to save the ozone layer was available. Don’t count your chickens yet however. Keeping the planet livable is more important than “fun” with airplanes. You are all going to be required to deal with sacrifices.
NASA/Boeing are developing a much needed prototype with lower carbon emissions.
I think you are confusing forums like this with Facebook/Twitter. On the latter there is always some moron ready to stroke your ego or flame you. In most forums people aren't there all day long and will only comment if you've said something of interest to them or they have something to add or say.
This is actually a pretty quiet forum, so often goes for a while without posts, so if you want more 'action' then elsewhere is probably better for you.
What? I can assure you that I’m not looking for more “action” and I wouldn’t know what to expect from FB or Twitter as I don't use them. I have a PhD and an Extra Class amateur radio license. What I am saying is that it appears that you don’t understand the concepts I am talking about. The need for a Safety Culture and why supersonic transports are unlikely to reappear any time soon are examples. I don’t know you very well so perhaps you are intelligent but are just hiding it.
For example, you seem to be extremely excited about “supersonic” aircraft reappearing but fail to grasp that airplanes of the future will have to operate at reduced carbon emissions levels or there won’t be any airplanes.
I told you that I worked for 23 years as a technical architect so the ideas I am discussing are the things that I know and do. I see no point in continuing that here as there are fundamental differences in our world view. Whatever you learn in high school or flight school doesn’t seem to provide understanding of the world.
In the future you will have to make sacrifices. If you don’t comprehend that and behave accordingly, it isn’t my problem. I really have more important things to do.
Please delete this account. I don’t want my ideas appearing in your place.