On Sep 20, 7:15*pm, wrote:

Correct. Those are aeronautical physics experiments.

They are unmanned to set records in duration and elevation.

No they are unmanned because they would have to be many times bigger to
carry the weight of a person.

No they are unmanned because they didn't want to make
them large enough to carry a man.

http://www.nasa.gov/centers/dryden/n...ios/index.html

Keep trying. Even a blind pig gets an acorn once in a while.

---
Mark

--
Jim Pennino