FB2
The FB2 was the response to a regulation change during the development of the aircraft. The team had designed the FB1, with a five-meter wingspan, based on the 2013 rules, and had flown it for the first time on July 13, 2014. Three months later, the 2015 regulations were released: a mandatory propeller, a smaller transport case, and an assembled aircraft that had to fit within a 2.5-meter square. The aircraft had to be redesigned.
The FB2 was operational by March 2015. It featured a 3,100 mm wingspan and an empty weight of 3.556 kg, making it 15% lighter and 10% faster than its prototype.
In Stuttgart, with Professor Casarsa at the controls, it successfully completed all five competition flights.
| Wingspan | 3100 mm |
| Wing chord | 490 mm at the root, 200 at the tip |
| Airfoil | Selig S1223 |
| Tail | conventional, NACA 0009 on both surfaces |
| Set by the rules | APC 13×7" Sport propeller, the same for every team; 1100×500×400 mm transport box; the assembled aircraft within a 2.5 m square |
| Payload carried | about 8 kg |
| Team | Team 04, eight students and two professors |
