5:15 PM - 6:30 PM
[PEM16-P02] Development and evaluative flight experiment result of small high-altitude balloon system optimized for domestic operation
Keywords:small high-altitude balloon, parafoil, guidance control
2. Developed airframe and low altitude flight experiment: We designed an examination airframe as is shown in figure to offer for various flight tests and conducted low altitude flight experiments by throwing down from a tower wagon an altitude of approximately 20 m, being controlled by remote console on ground.
3. Results of the experiment: The ratio of the gliding distance to the falling altitude was approximately 2 which we calculated from GPS position and barometer data recorded with a SD memory card. Long period flight is necessary for the evaluation with the stable gliding altitude of the parafoil, however, due to the short term evaluation period, obtaining the precise gliding ratio was difficult. Analizing the relationship between the heading orientation of the flight and the right and left servocontrol angles, it was confirmed that the state of airframe heading direction was changed from the east to the south when turning the servo controlled rudder with pulling down the right side arm.
4. Summary: Design validity of the developed airframe with the servocontrolled parafoil was confirmed by low altitude flight experiments. As for the future problem, it is necessary to evaluate with a flight from higher altitude, and to test it to confirm the ratio of the gliding distance to the falling altitude in the long-range flight. Assuming the more realistic large scale flight experiment in near future, we will develop a reliable bus apparatus and the balloon communication system to the ground stations. In addition, for the future mission, we have to confirm the design of mission and bus apparatus for the small balloon payload.