In ISAS/JAXA, a fully reusable sounding rocket is proposed as one step for the future full-fledged reusabletransportation system. This vehicle aims to be low in cost and to be high frequency of experimental opportunities byits reusability. The enlargement of the flight profile flexibility could acquire the high qualities of the experimentalconditions. This vehicle is a fully reusable vertical take-off and vertical landing (VTVL) rocket vehicle. And this hasthe capability of ballistic flight to the altitude over 120 km and returning to the launch site.In the flight sequence, the vehicle takes off vertically and cuts main engine off about 100 seconds later, andreaches to an altitude about 120 km during the ballistic flight. After that, the vehicle entries into atmosphere anddecelerated by aero braking, and vertically lands to the launch place.In landing phase, this vehicle makes a turnover maneuver from a nose-first entry attitude. This makes it possibleto achieve the deceleration and soft landing by its main engine thrust. As for the inversion maneuver of the verticallanding vehicle, the aerodynamic turnover maneuver is considered. After turnover maneuver, control torque of areaction control system (RCS) stabilizes the vehicle in a tail-first attitude before a re-ignition of main engines.To verify the turnover maneuver capability, it is considered to demonstrate the glide tests using the small sizedvehicle model. In this demonstration, the technical problems for the turnover maneuver as for the vehicle dynamicsand guidance control strategy will be investigated and the guidance and control method will be modified for thepractical use to achieve the system requirements.In this paper, the turnover maneuver control for the nose first entry of the vehicle is numerically simulated andthen the guidance strategy for the vehicle is considered. It is important for the guidance that the vehicle attitude couldbe stabilized after the turnover maneuver. By the given moment torque of the RCS, it is needed for the vehicle tomaintain the attitude at 180 degree of angle of attack.
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