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All Journal STATOR: Jurnal Ilmiah Mahasiswa Teknik Mesin
Rudi Sugara, Imam
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PENGARUH SUDUT DEFLEKSI GEAR TAB ELEVATOR TERHADAP STICK FORCE PILOT PADA PESAWAT N-219 Pribadi, Dicki Hendri; Koekoeh KW, Robertoes; ., Sumarji; Syuhri, Ahmad; Rudi Sugara, Imam
STATOR: Jurnal Ilmiah Teknik Mesin Vol 7 No 2 (2024): JURNAL STATOR
Publisher : Jurusan Teknik Mesin

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Indonesia geographically is an archipelagic state that has been recognized by international community according to the PBB law of the sea then was ratified by Indonesia into UUD No.17 of 1985. The number of island in Indonesia currently according to BPS is 17.504 island, that makes Indonesia become the largest archipelagic country in the world and make potentially to have pioneer of aircraft. N-219 Aircraft produced by PT.Dirgantara Indonesia is a pioneer of aircraft that has been developed in Indoensia. Aircraft must meet the flight feasibility criteria to ensure flight safety. One of criteria is the value of a stick force pilot (FE), the force that the pilot receives to control the control surface of an aircraft. Regulation value of the stick force pilot reference is Civil Aviation Safety Regulation (CASR) part 23. The method used in this study is modelling the equations of the motion of the control surface balance tab with the elevator. This study seeks to find the optimum equation to meet the CASR23 regulation where the value of the stick force (FE) is ≤ 75 lbs. The result showed the optimum stick force pilot (FE) value in this modelling is equation III . In critical flight conditions the deflection of the balance tab is not enough to meet the design criteria, trim tab deflection (ẟtrim = 0 – 5˚) is used to reduce stick force pilot value and meets CASR23 regulation. In SLS condition all equation modelling meets the design criteria, where the maximum value stick force pilot (FE) is 51 lbs. keyword : stick force pilot, hinge moment, balance tab, trim tab, elevator.
PENGARUH PENGGUNAAN CAIRAN PENDINGIN (DEBIT 75 L/h) TERHADAP EFISIENSI PANEL SURYA MONOCRYSTALLINE 20 WP Hardiatama, Intan; Al Wafi, Adib; Djumhariyanto, Dwi; Ilminafik, Nasrul; Darsin, Mahros; Rudi Sugara, Imam
STATOR: Jurnal Ilmiah Teknik Mesin Vol. 8 No. 1 (2025): JURNAL STATOR
Publisher : Jurusan Teknik Mesin

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Indonesia still relies on the use of energy from non-renewable sources, especially oil and coal. However, the supply of energy from fossil sources is decreasing. The energy conversion process in solar panels causes an increase in temperature, especially in conditions of intense sunlight and hot weather. High temperatures can accelerate the degradation of materials in solar panels. Therefore, a cooling system needs to be developed to lower the temperature of the solar panels to produce electricity efficiently. This study aims to examine how the efficiency of solar panels can be affected by cooling fluids. The experimental method is used by setting the solar panels at an angle of 30°. Data is collected during sunny weather conditions with sunlight levels above 2000 lux. The solar panel used is a 20 WP monocrystalline type. The recorded data includes several parameters, namely current, voltage, light intensity, and solar panel temperature. The results indicated that solar panels with cooling had a lower surface temperature compared to solar panels without cooling. In addition, cooled solar panels have a higher efficiency than uncooled solar panels. Using a cooler with a certain discharge on the surface of a solar panel can increase efficiency significantly. Keywords: Cooling system, Solar Energy, Solar Panel, Efficiency
Co-Authors ., Sumarji Ahmad Syuhri Al Wafi, Adib Dwi Djumhariyanto Ilminafik, Nasrul Intan Hardiatama Koekoeh KW, Robertoes Mahros Darsin Pribadi, Dicki Hendri