The link didn't show up in your post, but did in the quote.
Besides, the OP showed a "normal" sailplane, not a almost-space vehicle.
edit of post maybe it will work better.IIRC, Perlan 2 was towed to > 40,000 ft. for the record 76,000 ft. Flight.
It is known as the Armstrong Limit. From memory--about 65k feet.To restate my question, how high can you go before supplemental oxygen is not adequate and you have to have a pressurized cabin (or pressure suit)?
Would a "normal" sailplane, as shown in the OP, ever get that high?
He spent a couple or three years in their jail and they decided not to spend any more money feeding him jail rations. Buddy had been a poster child for the Marines, a perfect mechanic and student, and his record-seeking in gliders impressed some high ranking Marine officers. So they had been sneaking him a lot of simulator time and ground school and possibly even some dual flights in A-4's, supporting his studies toward going to flight school as soon as he was done with college and could go to OCS. So he had a lot more experience and education on ther A-4 than just a ground-pounder mechanic. And several hundred hours as PIC in sailplanes.VB, what did the Corps do to Buddy for taking the 104 out?