Abstract :
Unmanned aircraft, or commonly known as UAVs or drones, have
experienced very rapid development. Various areas of life have now involved
UAVs in it. Starting from agriculture, mining, maritime, to defense have applied
this technology. The CITIUS RT MAC Racing Plane aircraft is designed for the
needs of the competition in the Indonesian Flying Robot Contest. Where this
aircraft will perform a mission to form a trajectory in the shape of a figure eight
within three minutes. So that design, size, and analysis are needed which include
Aerodynamics, stability, and flight performance analysis related to Range,
Endurance, and Turning Performance that are suitable for these needs. The
method used is to conduct literature studies from various sources, and also
observation methods by conducting interviews with competent sources The design
process begins with determining the mission of the aircraft, followed by
determining the weight, and sizing the geometry of the aircraft. After obtaining
the shape and weight of the aircraft, it is necessary to analyze Aerodynamics,
stability, and flight performance, which includes Range, Endurance, and Turning
Performance. After going through the calculation process, the shape of the
aircraft was obtained in the form of a Flying Wing driven by an electric motor
with a Pusher configuration, with a wingspan length of 0.86 m, and a weight of
1133 grams, which was then drawn with CATIA Software. Aerodynamic
characteristics of Racing Plane CITIUS RT MAC aircraft were analyzed with
ANSYS Software with Lift coefficient and Drag coefficient of 0.1377 and 0.0394
respectively at an angle of 2° with Lift force of 1.25 kg. While the value of flying
performance is obtained by calculations that produce a Range value of 20,4
kilometers, Endurance for 6,18 minutes, and Turning Performance including a
Minimum Turn Radius of 24,4 meters, and a Maximum Turn rate of 24,522
degrees at a speed of 10.48 m / s when turning.