Abstract :
PUNA CW is a development of type multicopter PUNA which has a mission
to clean the windows of high buildings. One important part of PUNA CW is the
frame where this part is the place to put the engine, then this frame will be lifted by
the engine first. Because the mission of PUNA CW, the frame is often exposed to
water which can cause corrosion in material aluminum. So it is necessary to
consider the use of material in this frame. Carbon material is known to be strong
and resistant to corrosion and is widely used in the aviation. So in this research, it
will discuss the strength analysis of the structure to determine the maximum stress
that occurs and the safety of the PUNA CW Aerones AD28 platform structure.
The geometrics of PUNA CW Aerones AD28 platform modeled with CATIA
V5R20 Software in Part Design workbench, are combined in Workbench Assembly
Design. The results of the Assembly Product will be analyzed in the Workbench
Generative Structural Analysis. The loading of the platform structure is carried out
under take off and steady conditions with thrust load variations. The results of the
analysis will get the stress value, then calculated a Margin of Safety.
The results of this research show that for the highest maximum stress at take
off is 6.02404 x 108 N/m2
precisely located on a plate with a Margin of Safety of
0.44. While the maximum stress value that occurs on the platform structure of
PUNA Aerones AD28 at a steady state is 9.58918 x 107 N/m2
precisely located on
a plate with a 8.04 Margin of Safety. These results indicate that the structure of the
PUNA Aerones AD28 platform is safe in operation.