They included the Global Positioning System (GPS) Attitude and Navigation Experiment (GANE) to determine to what accuracy the GPS system can supply attitude information to a space vehicle; the Vented Tank Resupply Experiment (VTRE) to test improved methods for in-space refueling; the Liquid Metal Thermal Experiment (LMTE) to evaluate the performance of liquid metal heat pipes in microgravity conditions, and the Passive Aerodynamically Stabilized Magnetically Damped Satellite (PAMS) payload to demonstrate the technology of the principle of aerodynamic stabilization in the upper atmosphere.