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Development of human powered flying vehicle (part 2) – propeller design

Development of human powered flying vehicle (part 2) – propeller design / Musharifa Faaiqa Ismail
Tujuan projek ini adalah untuk mereka bentuk dan reka bilah kipas untuk kenderaan terbang berkuasa manusia dengan menganalisis konfigurasi kipas menggunakan teori unsur bilah yang melibatkan pemuliharaan aliran paksi dan sudut momentum, kipas teras dan pekali tork dan kecekapan, unsure pecahan bilah , faktor aliran masuk dan prosedur penyelesaian berulang. Selain itu, terdapat juga lebih daripada satu parameter dan kuasa-kuasa yang telah diambil kira seperti lif dan pekali seretan, hujung jejari, bilangan bilah, halaju, panjang kord untuk setiap lelayang, panjang bilah, dan kawasan. Analisis ini dijalankan dengan menggunakan Software Propeller Kalkulator dan fail excel yang digunakan untuk menentukan teras, halaju dan sudut padang yang sesuai untuk kipas. Tambahan pula, kedua-duanya digunakan dalam analisis reka bentuk kipas untuk perkara kebolehpercayaan. Dari analisis, sesuai sudut padang untuk kipas adalah 15 ∘, 20 ∘ , 25.7 ∘ , 30 ∘ , 36 ∘ , 40 ∘ , 47 ∘ , 61 ∘ , dan 81 ∘ . Kenderaan terbang berkuasa manusia ini dikuasakan menggunakan 350 RPM yang sama dengan 36,6519 rad/s kelajuan sudut iaitu gear. Tambahan pula, halaju yang digunakan sebelum dan semasa berbasikal 0.1 m / s dan 8.3 m / s. Seperti yang dinyatakan, satu kipas terdiri panjang yang berbeza (panjang kord) aerofoil. Panjang kord adalah 14.72 cm (root), 20.43 cm, 25.76 cm, 29,31 cm, 30.2 cm, 28.43 cm, 24.49 cm, 19.16 cm dan 7.49 cm (hujung). Kesemua sekali adalah sembilan aerofoil dan menggunakan Clark Y sebagai jenis aerofoil. _______________________________________________________________________________________________________ The purpose of this project is to design and fabricate propeller blades for the human powered flying vehicle by analyzing the configuration of the propeller using blade element theory which involves axial and angular flow conservation of momentum, propeller thrust and torque coefficient and efficiency, blade element subdivision, inflow factors and iterative solution procedure. Besides, there are also more than one parameters and forces that have been considered such as lift and drag coefficient, tip radius, number of blade, velocity, chord length for each airfoil, length of the blade, and area . The analysis was conducted by using Propeller Calculator Software and excel file which are used to determine the thrust, velocities and pitch angle that are suitable for the propeller. Furthermore, both are used in a design analysis of the propeller for a reliability matter. From the analysis, the suitable pitch angles for the propellers are , 15 ∘ 20 ∘ , 25.7 ∘ , 30 ∘ , 36 ∘ , 40 ∘ , 47 ∘ , 61 ∘ , and 81 ∘ . This human powered flying vehicle uses 350 RPM which is equal to 36.7 rad/s as its angular speed of gear. Furthermore, velocities that are used in the analysis before and during cycling are 0.1 m/s and 8.3 m/s. As mentioned, one propeller consists of different chord lengths of airfoils. The length of the chords are 14.72 cm (root), 20.43 cm, 25.76 cm, 29.31 cm, 30.2 cm, 28.43 cm, 24.49 cm, 19.16 cm and 7.49 cm (tip). All together are nine airfoils respectively and used Clark Y as the type of airfoil.
Contributor(s):
Musharifah Faaiqa Ismail - Author
Primary Item Type:
Final Year Project
Identifiers:
Barcode : 00003105263
Accession Number : 875006756
Language:
English
Subject Keywords:
propeller blades; flying vehicle; design
First presented to the public:
6/1/2016
Original Publication Date:
5/15/2018
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Aerospace Engineering
Citation:
Extents:
Number of Pages - 62
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2018-05-15 11:36:43.131
Date Last Updated
2020-04-30 16:36:31.694
Submitter:
Mohd Jasnizam Mohd Salleh

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