Aerodynamic Characteristics of Water Rocket and Stabilization of Flight Trajectory

Autor: Nobuyuki Tomita, Toshiaki Takemae, Rikio Watanabe
Rok vydání: 2004
Předmět:
Zdroj: JOURNAL OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES. 52:449-455
ISSN: 1344-6460
DOI: 10.2322/jjsass.52.449
Popis: The aerodynamic characteristics of water rockets are analyzed experimentally by wind tunnel testing. Aerodynamic devices such as vortex generators and dimples are tested and their effectiveness to the flight performance of water rocket is discussed. Attaching vortex generators suppresses the unsteady body fluttering. Dimpling the nose reduces the drag coefficient in high angles of attack. Robust design approach is applied to water rocket design for flight stability and optimum water rocket configuration is determined. Semi-sphere nose is found to be effective for flight stability and it is desirable for the safety of landing point. Stiffed fin attachment is required for fins to work properly as aerodynamic device and it enhances the flight stability of water rockets.
Databáze: OpenAIRE