A demonstrative prototype of aeronautical dual-power path gear unit

• Autorzy: Budzik G.
• Języki publikacji: EN

Abstrakty

EN

The paper presents a process of designing, modelling and manufacturing of a demonstrative prototype of a dual-power path gear unit to be applied in aeronautical systems of drive transmission. The process of making a demonstrator of a dual-power path gear unit by means of 3D-CAD modelling and Rapid Prototyping has been described here. Designing gears is based on Computer Aided Design (CAD), Computer Aided Engineering (CAE), Computer Aided Manufacturing (CAM) systems including also Rapid Prototyping (RP). The first stage of the designing process of a gear unit is always defining basic parameters of gear work (among others; power, rotational speed, transmission ratio) depending on the unit's predestination. On the basis of the above, the calculation of main constructional parameters is carried out. Subsequently, it is possible to make 3D-CAD models of toothed wheels and the remaining parts of the gear unit. In case of designing demonstrative prototypes, it is important to take into consideration the assumptions of modelling similarity to a real gear unit. 3D-CAD systems are often equipped with modules for analysing geometrical parameters and cooperation of individual parts of the unit for example the area of contact. A detailed analysis of cooperation of gear parts of the unit allows for detecting models' faults early and for deleting them. After making 3D-CAD models one can approach to creating a prototype by means of Rapid Prototyping methods. It is necessary to prepare the numerical data essential as a subsequent stage of the process of making the demonstrator. On that basis the individual parts of the gear unit are made in an incremental process. The accuracy of creating a physical prototype depends mainly on the accuracy of a 3D-CAD/3D-RP model prepared in a process of processing numerical data. A demonstrator described in the paper has been made by means of FDM method. The prototype allowed for analysing constructional solutions of gear units on a physical model and for preparing assumptions for introductory stand tests.

Słowa kluczowe

EN

aeronautical gears; toothed wheels; aeronautical power drives

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2011
• Tom: Vol. 18, No. 4
• Strony: 41--46
• Opis fizyczny: Bibliogr. 9 poz., rys.

Twórcy

autor

Budzik G.

• Rzeszow University of Technology Faculty of Mechanical Engineering and Aeronautic Powstańców Warszawy Av. 8, 35-959 Rzeszow, Poland,

Bibliografia

• [1] Budzik, G., Kozik, B., Pacana, J., Żmuda, B., Modelling and prototyping of aeronautical planetary gear demonstrator, Journal of KONES Powertrain and Transport, Vol. 17, No. 3, pp. 49-54, 2010.
• [2] Cocking, H., The Design of an Advanced Engineering Gearbox, Vertica, Westland Helicopters and Hovercraft PLC, Vol. 10, No. 2, pp. 213–215, Yeovil, England 1986.
• [3] Krantz, T. L., Delgado, I. R., Experimental Study of Split-Path Transmission Load Sharing, NASA Technical Memorandum 107202, Army Research Laboratory, Technical Report ARL–TR–1067, San Diego, California 1996.
• [4] Liou, W., Rapid Prototyping and engineering applications – a toolbox for prototype development, Taylor & Francis Group, 2008.
• [5] Oleksy, M., Budzik, G., Heneczkowski, M., Hybrid polymer composites for rapid prototyping of gears, Polimery, 55, 5, pp. 403-407, 2010.
• [6] Pacana, J., Kozik, B., Budzik, G., Defining instantaneous contact track of aeronautical bevel gear applying finite elements method and rapid prototyping method, Journal of KONES Powertrain and Transport, Vol. 17, No. 2. pp. 379-386., 2010
• [7] Smirnov, G., Multiple-Power-Path Nonplanetary Main Gearbox of the Mi-26 Heavy-Lift Transport Helicopter, Vertiflite, Mil Design Bureau, Vol. 36, pp. 20–23, Moscow 1990.
• [8] Sobolak, M., Budzik, G., Experimental Method of Tooth Contact Analysis (TCA) With Rapid Prototyping (RP) Use, Rapid Prototyping Journal, Vol. 14, No. 4, pp. 197-201, 2008.
• [9] White, G., New Family of High-Ratio Reduction Gear With Multiple Drive Paths, Proc. Instn. Mech. Engrs., Vol. 188, pp. 281-288, 1974.