This space papercraft is the RVT-9, designed by JAXA(Japan Aerospace Exploration Agency) official site. The Reusable Vehicle Testing (RVT) project was conducted by the Japanese Space Agency (JAXA) from 1998 until 2003. The project involved a series of experimental vehicles to test repeated flights of a reusable rocket. Four complete vehicles were developed during the project. The design of the experimental vehicles addressed various technical challenges for future Reusable Launch Vehicles (RLV) such as flight on demand, quick turnaround, higher performance, lightweight structures and materials.
The project involved ground and flights tests with the flight testing conducted at the Institute of Space and Astronautical Science (ISAS) Noshiro Testing Center in the northern part of Japan's main island.
You can download the paper craft model here: Space Papercraft - Reusable Vehicle Testing RVT-9 Free Paper Model Download