Satellite Configuration Design - Finite Element Analysis for Satellite Structures - page 36

B

4 Locking and releasing
mechanism

GPS receiver antenna

S-band conical antenna

X

X-band antenna

S-band conical antenna

Y

Multi-band earth imager

Fig. 2.15 General view of the satellite in stowed configuration in the opposite Z-direction

GPS receiver electronic module are packaged together and mounted on the third
face located at the negative Y-axis.
The payload command & data handling unit (PCDHU) and two identical multi-
band earth imager signal-processing units should be located as close as possible to
each other to minimize cabling length, so they are mounted at the inner surface of
mounting plate. They are located at the negative X-axis area of the mounting plate,
thus they occupy the remaining area of the fourth side of the lower frame. To
provide symmetry, PCDHU is located at the middle between the two MBEI signal-
processing units. The shape of the lower frame will be changed from square cross-
section to a modified square one to provide minimal occupied volume. Figure 2.11
illustrates the modified square cross-section lower frame. Telemetry module is
mounted at the inner surface of the base plate at the positive X-axis area.
After mounting all main equipment inside the satellite, both base and mounting
plates have a rectangular shape with the same outer dimensions. Final dimensions
of the four solar panels should be selected to be suitable for packaging. Therefore,
there are two groups of solar panels; each one of them consists of a pair of panels
located at opposite sides. The dimensions of each panel of the first group are