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All Journal Malikussaleh Journal of Mechanical Science Technology JATAED: Journal of Appropriate Technology for Agriculture, Environment, and Development
Aditya, Vikra
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Automotive Engineering Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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ANALISA INDIKATOR KINERJA TEROWONGAN ANGIN RANGKAIAN TERBUKA (OPEN CIRCUIT WIND TUNNEL) TIPE SUBSONIC Aditya, Vikra; Alchalil, Alchalil; Asnawi, Asnawi; Rahman, Abdul
Malikussaleh Journal of Mechanical Science and Technology Vol. 7 No. 2 (2023): Malikussaleh Journal of Mechanical Science and Technology
Publisher : E-Journal Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/mjmst.v7i2.13658

Abstract

Fluid is a substance that can change its shape continuously due to the acting tangential shear force. Aerodynamics is a branch of fluid dynamics that studies specifically the forces acting on an object contained in a fluid flow. Wind Tunnel is a tool used in aerodynamics research to study airflow characteristics. Wind tunnel performance indicators include flow uniformity, flow and pressure distribution, aerodynamic forces acting on test objects in the wind tunnel. By using unsymmetrical airfoils, the impact of speed variations of 2 m/s, 4 m/s, 6 m/s, 8 m/s, 10 m/s and increasing angles of attack ranging from 0°, 5°, 10° on fluid flow can be determined. Tests were conducted in a section of the wind tunnel measuring 30 cm x 30 cm x 40 cm. Overall, the open-type wind tunnel has not been able to create uniform flow. The Reynolds number is at Re>4,000, so the wind tunnel under study is turbulent. The results of the speed variation and angle of attack increase also have an impact on the lift and drag coefficient values of the airfoil. At the maximum speed variation of 10 m/s with an angle of attack of 10°, the lift coefficient is 0.14350 and the drag coefficient is 0.15162.
Designing an IoT-based footstep counter for sports shoes Aditya, Vikra; Atabiq, Fauzun; Jannah, Dina Miftahul; Harahap, Muhammad Khoiruddin; Ilham, Dirja Nur
JATAED: Journal of Appropriate Technology for Agriculture, Environment, and Development Vol. 1 No. 1 (2023): JATAED: Journal of Appropriate Technology for Agriculture, Environment, and Dev
Publisher : LEMBAGA KAJIAN PEMBANGUNAN PERTANIAN DAN LINGKUNGAN (LKPPL)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62671/jataed.v1i1.2

Abstract

Shoes are general footwear that can be used when exercising, working, formal events, or just to sweeten your appearance. Shoes used for sports have a slightly different shape from shoes in general, in terms of covering the left and right sides, the base, and the design, but most shoes do not have a device to count the steps taken. To overcome this, researchers have created a tool in shoes that can count the user's footsteps while exercising. A step counter on shoes based on the internet of things uses NodeMCU and an IR sensor which functions to detect every step of the shoe wearer. The result of the detected step count will be displayed in the blynk application. NodeMCU and IR sensors will be connected to the Blynk application using the internet network. When the step counter on the shoe and the hotspot are turned on, the results of the foot count will appear on the Blynk application on the smartphone. Footstep data detected by the IR sensor corresponds to the number of steps counted manually. The test results from a 150-meter step counter, obtained results of 207 steps in 3 minutes when walking casually, 223 steps in 1 minute 30 seconds when walking fast, and 264 steps when running in a period of 1 minute 15 seconds.
Co-Authors Abdul Rahman Alchalil Alchalil Asnawi Atabiq, Fauzun Ilham, Dirja Nur Jannah, Dina Miftahul Muhammad Khoiruddin Harahap