I desigend 8 rocket glider and wheel models in 1986 at an age of 13 years. The models are out of paper and they use Held-1000 rocket engines. Flys at Uni Bremen. I called some of my planes plane Enterprice / Enterprice. Entenflugmodell, Deltaflügler, Vorflügel, Bodenstart, Legomännchen, Modellflugzeug, Bodeneffekt, Papierflugzeug.