Institusion
INSTITUT TEKNOLOGI DIRGANTARA ADISUTJIPTO
Author
NOVIARATRI LARASATI, ANISA
Subject
T Technology (General)
Datestamp
2024-07-25 02:46:23
Abstract :
UAV (Unmanned Aerial Vehicle) is an aircraft without human pilot onboard
that are being developed but need a long runway for take off. However, for a traffic
surveillance and aerial surveillance, a long runway might be not available. To
answer that, a vertical take off UAV is needed. Wings is an important part to
support loads of aircraft, then structure that can withstand all aerodynamic forces
as well as stress is needed. Therefore, the researcher did an analysis to find out the
biggest stress that happened and the safety of wings structure.
Aircraft modelling process used MSC Patran/Nastran software started with
geometry import from CATIA software, meshing, properties input, putting load and
constrain then analysed. During the loading, there are two conditions applied,
when the aircraft did vertical take off and when cruising with 3.8 load factor. After
being analyzed and obtained stress value, calculation is done to get margine of
safety.
The results from analysis founf the value of maximum stress in cruising
condition in stringer is 68,4 Mpa with 11,675 margin of safety. The value of margin
of safety in wing is 2,816 with stress value of 0,168 MPa and VTOL beam 65,692
with 13 Mpa stress value. While in vertical take off condition, the maximum stress
in VTOL beam is 160 MPa with margin of safety value 4,419. For margin of safety
wing 1,954 with 0,217 Mpa of stress and stringer margin of safety 21,876 with
stress value of 37,9 MPa.