EXPERIMENTAL TESTING OF NEEDLE EFFECTS ON ROCKET AERODYNAMIC CHARACTERISTICS
Milićev Snežana
Ristić Slavica
Vitić Aleksanda
The paper discusses experimental data concerning
testing of a rocket model with the semispherical nose with and without a needle. The model
has been tested in the T-36 trissonic wind funnel. The Mach number was M=1,9, the Reynolds
number MRE=0,38 while the model attack angle changed in the range 
with the 2° step. The air flow field visualisation has been
carried out by the Schlieren method. It has been pointed out that the needle has a
significant effect on the increase of rocket aerodynamic characteristics. The conclusions
have been illustrated by Schlieren photos.
Ključne reči:
Rocket aerodynamics, supersonic flow, body with the semispherical nose and the needle, flow image, chock wave, aerodynamic coefficient.