J. Aerosp. Technol. Manag. vol.6 número2

hese two noise treatment phases resulted on a wind-tunnel background noise reduction of up to 5 dB, and a desirable turbulence level reduction from the original 0.25% to 0.21%,

The results of the concentrations of HCl, CO and PM 2.5 (Al 2 SO 3 ) showed to be very interesting: the formation of the ground and contrail cloud and the dispersion of the

In this method, the CFD flow solver is coupled with a free wake model by using the surface transpiration approach, i.e., effects of rotor vortex-wake are included into

ABSTRACT: In this study, an Unscented Kalman Filter (UKF) algorithm is designed for estimating the attitude of a pico- satellite and the in-orbit external disturbance torques..

Propulsive jets are applied at the apogee of the transfer orbit in order to keep the perigee altitude and control the rate of heat transfer suffered by the vehicle during atmospheric

• Case A: Cold case represents the nominal operational mode in which minimum external heat loads (albedo: 0.34; Earth radiation: 208 W/m²; solar radiation: 1326  W/m²),

Figure 7 shows a comparison between RCS of the fighter aircraft at the frequency of 11.1 GHz, partially coated and uncoated with RAM, as shown in Fig.. 2

Airport nodes in the aviation network of CSA are sorted according to the degree and the betweenness value in descending order, and then the airport based on a relatively big