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The braking system is a crucial component in a vehicle, where its performance is highly influenced by the wheel's rotational speed and the geometry of the brake pad. This study aims to analyze the impact of wheel rotational speed and variations in pad geometry on the temperature of the brake pad. The braking process generates heat due to friction, which, if not properly managed, can reduce braking performance and accelerate brake pad wear. The experiment was conducted at four levels of wheel rotational speed: 1000 RPM, 1500 RPM, 2000 RPM, and 2500 RPM. The testing system was designed using a braking system simulator equipped with a speed sensor (LM393) and a temperature sensor (K-type thermocouple), which were connected to an Arduino microcontroller and displayed in real-time through a Graphical User Interface (GUI) in MATLAB. The test results indicated that both the geometric shape of the brake pads and the wheel rotation speed significantly affected the resulting temperature. Standard brake pads produced the highest temperature at a speed of 2500 RPM, reaching 63.33°C. In contrast, brake pads with holes offered the best performance by maintaining a lower temperature of only 43.00°C. Furthermore, an increase in wheel rotation speed led to a noticeable rise in temperature; for standard pads, the temperature increased from 36.67°C at 1000 RPM to 63.33°C at 2500 RPM. This demonstrates that RPM is a major factor in heat generation due to friction. The MATLAB GUI effectively visualized the relationship between RPM and temperature, facilitating the analysis and evaluation of the data.

The Indonesian Naval Academy (AAL) is a military educational institution responsible for training young officers for the Indonesian Navy. The learning process at AAL is structured thru classroom theory, field practice, and direct simulations, including using the Engine Room Simulator (ERS) located under the Department of Engineering. The ERS is an important facility for supporting the technical mastery of ship engines for cadets. The operation of this simulator is highly dependent on the supply of electrical energy, with a total electrical power requirement of 14.36 kW. Thru this research, the author aims to design a hybrid solar energy system that can combine electrical energy from the PLN grid with alternative energy from sunlight. The potential for solar energy in the Indonesian Navy Academy area is very large. The average sunlight intensity in the Surabaya area over 1 year per hour is 208.33 W/m2. Therefore, in the design study, the author chose the Solar PV Lesso HPM series 550W solar panel, which has a power of 550W, an efficiency of 21.3%, and an area per panel of 2.583 m2. Based on the calculations obtained, the author used 126 solar panels with an area of 323.64 m2, as well as 24 Panasonic LC-P12100NA batteries with a voltage of 12 V and a capacity of 100 Ah, installed in 3 series and 8 parallel circuits.

The Naval Academy has many options in carrying out MOB practical training. The training is carried out in 2 places, namely at Kal Kadet and at the Andromeda Building "Bridge Simulator". However, the Andromeda Building has never been used at all in MOB practical training even though the Andromeda Building has the potential for sailor corps cadets to carry out MOB practical training. The time constraints often clash with regimental activities so that the cadets do not get maximum results. To reduce the collision between practical training and regimental activities that shorten the time during practical training, the researcher analyzed using the SWOT method so that it would produce several alternatives to overcome this situation. The stages that will be carried out to optimize the time given by the Institution are by utilizing the Andromeda Building to carry out MOB practical training.