PERANCANGAN DAN ANALISIS AERODINAMIKA ROTOR EDF (ELECTRIC DUCTED FAN) 90 MM

Ilmiyya, Farihatul (2023) PERANCANGAN DAN ANALISIS AERODINAMIKA ROTOR EDF (ELECTRIC DUCTED FAN) 90 MM. Thesis thesis, Institut Teknologi Dirgantara Adisutjipto.

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Abstract

Electric ducted fan (EDF) is a type of electrical propulsion system configuration with the motor power source coming from the battery and consists of a fan surrounded by a duct casing to increase the amount of air compression, to produce a higher thrust compared to conventional rotor of the same diameter. One of the most important components in an EDF system is a fan. The selection of fan design configurations on the EDF will have a major effect on the thrust generated. To fulfil their propulsion needs, one usually buys a propulsion system from a manufacturer that is not satisfy the DRO (design requirements and objectives) of the flying vehicles. It is necessary to have a rotor (fan) from EDF that is in accordance with DRO, so a fan design is needed on EDF. Therefore, research was carried out on the design of an EDF fan with a diameter of 90 mm. The designed fan has a diameter of 90 mm with 4 blades, the size of the hub / tip is 0,5. The results of the analysis showed that there was a significant difference in the thrust value between theoretical calculations and computational fluid dynamics(CFD) simulation. At a design rotation of 38850 rpm, from the momentum theory of the blade element, a thrust of 36 N was obtained, while numerically simulation using ANSYS software obtained a thrust of 30,476 N. The discrepancy was due to improrer shape of the spinner, tailcone, bellmouth, stator and fan’s duct.

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