The Orbital Re-entry Experiment (OREX) flight experiment is part of the research for the H-II Orbiting Plane (HOPE). Its purposes are to contribute to HOPE development by accumulating experience in designing and producing a re-entry vehicle and acquiring re-entry data which is difficult to acquire in ground experiments. The OREX vehicle had been launched february 4, 1994 at Tanegashima space center and inserted into orbit by H-II rocket. Vehicle came turn around over the Tanegashima island. It could get experimental data during re-entry, transmited to data the grand stations after re-entry successfully, and splashed down in the Central Pacific Ocean. The OREX project was conducted in cooperation with the National Aerospace Laboratory (NAL) and National Space Development Agency (NASDA).