Satellite Structural Design - Finite Element Analysis for Satellite Structures - page 69

Fig. 3.22 Deformation of preliminary basis plate with struts

3.5 Detailed Structure Description

The structure of Small Sat includes the following modules:

• Base plate;
• Mounting plate;
• Basis unit case with star sensor bracket;
• Upper frame;
• Lower frame;
• Rotation mechanisms of the solar arrays;
• Locking and releasing mechanisms;
• Fastening and mounting elements.

The structure materials used are aluminum alloy AMg6, titanium alloy VT16, and
steel 12X18H10T. Total mass of the structure modules without the rotation, and
locking, and releasing mechanisms is 32 kg.

3.5.1 Base Plate

The base plate is a 1,030 9 800 9 26 mm milled plate made of aluminum alloy
AMg6. The built-in milled stiffeners are oriented as shown in Fig. 3.29 and are
milled in the following shapes:

• L-shaped cross-section stiffeners—along lines between holes for eight studs of
the satellite case fastening and holes for four bushes intended for fastening of
the satellite to the launch vehicle adapter;