Maybe not GA, but...
Slightly delayed from the dates given in this
article, Sierra Nevada Corporation is now planning to carry out their next drop tests of the Dreamchaser spacecraft later this year.
It struck me that although this is an unusual activity, there must have been several similar projects out there over the decades, probably going back as far as the first high-altitude balloons, on both sides of the curtain at the time?
Does anyone have any project names/links to hand which could provide more information on things of similar ilk?
B.