Stephen,
yes, thatīs Hannover University (german spelling with two "n")
For those who are more interested, hereīs the website of AKAFLIEG Hannover with links to other German AKAFLIEGs:
http://www.akaflieg-hannover.de/
Hope this helps! I donīt know anything about Helmut Weitzmann - maybe someone has an idea how to pick up the thread...
Regards
Roland