Application of an optimization method to high performance propeller designs



Publisher: Lewis Research Center in Cleveland, Ohio

Written in English
Published: Downloads: 10
Share This

Subjects:

  • Propellers -- Design and construction.,
  • Mathematical optimization.

Edition Notes

StatementLi Ko Chang and George L. Stefko ; prepared for the twentieth Joint Propulsion Conference cosponsored by the AIAA, SAE, and ASME, Cincinnati, Ohio, June 11-13, 1984.
SeriesNASA technical memorandum -- 83710.
ContributionsStefko, George L., Lewis Research Center.
The Physical Object
FormatMicroform
Pagination1 v.
ID Numbers
Open LibraryOL17801757M

M. Kamarlouei et al. Multi-Objective Evolutionary Optimization Technique Applied to Propeller Design – – common of which is the B-series. The other series including the Gawn series, Japanese series, KCA series, Lindgren series, Newton-Rader series, Wageningen nozzle . In this paper, a design method combined with the genetic algorithm is proposed to design the propeller of general aviation aircraft. The inputs of this method are the cruise speed, rotational speed, propeller diameter, number of blade, thrust, Reynolds and Mach numbers. The chord and pitch-angle angle distributions along the blade are the outputs of this : Song Xiang, Wei Ping Zhao, Li Guo Zhang, Gang Tong. Propellers 4. propeller of 2 m in diameter spinning at rpm, thrust and power coefficients can be approximated in terms of advance ratio as c F performance and economy (like a high gear). For a given shaft power, if the propeller has inflight - adjustable pitch, a low pitch is set for maximum take-off thrust (the blades give large lift File Size: 1MB.   The performance of a propeller is influenced by the effects of the airplane components including the nacelle, fuselage and wing. These bodies induce flow velocity changes in the propeller plane which changes the blade load distribution from that in Cited by: 2.

The procedure to solve the propeller-hull interaction is described as follows: (1) The viscous flow around a ship hull without the propeller in operation is first solved by the RANS code UVW; The circumferential mean value of the flow velocity at the propeller plane is then extracted from the solution of UVW, and then used as the inflow of. The result pane shows the performance of our propeller and the 3D prototype tab is updated. Looking more closely at the performance we will check our our thrust and power correspond to the needs of our aircraft: A km / h we estimated that our plane generates a drag of 30 newtons. we found the engine torque curve at rpm was Nm. Generalized Method of Propeller Performance Estimation Windsor Locks, CT: Description. This is a piece of technical standard documentation requested by a BU Mechanical Engineering faculty member for teaching purposes. Based on BU Libraries' research, this item is out of copyright. If you believe otherwise or have questions. Functional Application of the Propeller Load Curve for Fixed Pitch Propellers.” I have examined the final electronic copy of this thesis for form and content and recommend that itbe accepted inpartial fulfillment of the r equirements for the degree of Master of Science, with a .

propulsion performance. While the use of systematic results of standard propeller families (with simple and surely not up to date geometries) is common practice in the prelimi-nary design phase of the propellers, in a later stage the de-signer needs a reliable method to evaluate the performance of contemporary designs of highly skewes or File Size: KB. Performance and modeling of an existing propeller: Reverse engineering Héliciel has several design methods adapted to different case of propellers studies: The user default design, to create an optimum propeller, by entering the fluid speed. sequence has an effect on the propeller characteristics of a conventional propeller. Proper stacking sequence of the composite propeller improves its performance as compared to its metallic counterpart. An improvement of about 47% in the propeller thrust coefficient was observed for one of the cases. 24th Symposium on Naval Hydrodynamics Fukuoka, JAPAN, July Multi Objective Optimization of Ship Hull Form Design by Response Surface Methodology Yoshimasa Minami, Munehiko Hinatsu (National Maritime Research Institute, Japan) ABSTRACT Recently multi objective design has been paid attention for the development of high performance ship.

Application of an optimization method to high performance propeller designs Download PDF EPUB FB2

Get this from a library. Application of an optimization method to high performance propeller designs. [Li Ko Chang; George L Stefko; Lewis Research Center.]. In this paper, a design method for Application of an optimization method to high performance propeller designs book performance of the marine propellers including the WCT propeller is suggested.

It is described to maximize the performance of the propeller by adjusting expanded areas of the propeller blade. Results show that efficiency can be increased up to over 2% through the suggested design by: In the present paper, an example of the application of the design by optimization to a high-speed boat propeller is given.

The attention is focused on the optimization (maximization of efficiency and reduction of cavitation) of a custom propeller for a 95 feet high-speed craft.

A Method for Propeller Blade Optimization and Cavitation Inception Mitigation Article (PDF Available) in Journal of Ship Production and Design 31(2) May with 2, Reads How we measure 'reads'. Applicability of a Point Performance Design Method 17 4. INITIAL HALE UAV PROPELLER DESIGN AND ANALYSIS 18 Propeller Design Requirements Specification 18 UAV Mission Description 18 UAV Performance 20 Propeller Design Constraints 21 Atmospheric Modelling 22 File Size: 3MB.

Analytical method such as momentum-blade element theory together with computational methods such as CFD can be relied upon to design and optimise the performance of propellers of any class. In the current work, the design and performance evaluation of a propeller applicable to a MAV is carried out for a given thrust of 1 N, diameter of mm Author: Balaji Jayanth Venkatesh.

The mathematical programming uses the same propeller performance analyses discussed previously and couples the present optimization program. Once the design variables are defined, the optimization program takes over the role of manipulating the design variables to arrive at the best blade shape design as shown in Fig.

by: Performance optimization of marine propellers. Pressure pulses evaluation is a current issue in high-performance propeller design. Usually, it has been addressed experimentally and numerically. A new method for designing propeller blade sections is presented. A vortex lattice method is used to evaluate the performance and the time-dependent pressure distribution on the blade surface in a non-uniform flow, while efficient optimization algorithms are used to modify the blade sections.

Two different designs were carried out in this by: DESIGN AND PERFORMANCE CALCULATIONS OF A PROPELLER FOR VERH HIGH ALTITUDE FLIGHT by LISA DANIELLE KOCH ABSTRACT Reported here is a design study of a propeller for a vehicle capable of subsonic flight in Earth’s stratosphere.

All propellers presented were required to Cited by: 7. mission- and aircraft-specific propellers for small unmanned aerial vehicles. This objective was met by creating a computer program to design a propeller that meets user-defined aircraft performance requirements within the limitations of the motor, material, and manufacturing methods.

The use of additive manufacturing (3D printing) in makingCited by: 2. @article{osti_, title = {Experimental optimization of a free vortex propeller runner for micro hydro application}, author = {Singh, Punit and Nestmann, Franz}, abstractNote = {The turbine technology for low head application in the micro hydro range has been vastly neglected despite niche available in scattered regions of valley flows as well as in wastewater canals and other energy.

PROPELLER PERFORMANCE ANALYSIS AND MULTIDISCIPLINARY OPTIMIZATION USING A GENETIC ALGORITHM Except where reference is made to the work of others, the work described in this dissertation is my own or was done in collaboration with my advisory committee.

This dissertation does not include proprietary or classified information. A Design Method for High-Speed Propulsor Blades Paul E. Griffin, Paul E. Griffin. This study uses a nonlinear optimization method coupled with a vortex lattice cavitating propeller analysis method to design efficient propeller blades.

Different constraints are imposed to improve propeller by: 7. An optimization design method is provided for ducted propeller steady analysis.

combines geometry It generation, auto-meshing, optimization algorithm and CFD analysis techniques and make the process automatic operated which helps extend the CFD analysis to the design process.

For test the whole process, a ducted propeller case study is File Size: KB. Noise generated by ships is one of the most significant noises in seas, and the propeller has a significant impact on the noise of ships, which reducing it can significantly lower the noise of vessels.

In this study, a genetic algorithm was used to optimize the hydro-acoustic and hydrodynamic performance of propellers. The main objectives of this optimization were to reduce the propeller noise Author: Abouzar Ebrahimi, Mohammad Saeed Seif, Ali Nouri-Borujerdi.

1 Overview of propeller performance. Each propeller blade is a rotating airfoil which produces lift and drag, and because of a (complex helical) trailing vortex system has an induced upwash and an induced downwash.

Figure shows a schematic of a propeller. Report presenting equations derived for the equilibrium operation of a turbine-propeller engine in terms of parameters used in turbine- and compressor-performance maps.

By use of the analytical relations, geometric, thermodynamic, and aerodynamic relations among compressor, turbine, and exhaust nozzle may be : Alois T.

Sutor, Morris A. Zipkin. The first application of the extended theory is presented. The effect of the viscous drag is much greater than previously susp ected. The lift is shifted back inboard but in a different way than it is shifted outboard in the case of high loading. Because the airfoil performance is Author: Richard Eppler, Dan M.

Somers. The aerodynamic design of a propeller optimised over a given flight profile is presented. The initial design is carried out utilizing a method based on minimum induced loss theory in order to obtain a relatively optimal solution. This is followed by a final optimisation of the blade geometry to maximize the mission effectiveness of an Unmanned Air.

Development of an Analysis and Design Optimization Framework for Marine Propellers Four-Bladed Propeller with High Skew at x Performance Curves of the KCS Propeller with New Blade Section Profile. ix LIST OF TABLES Table Page Author: Ashish C.

Tamhane. (for an exceptionally poor propeller). Thus, these results indicate that proper propeller selection for UAVs can have a dramatic effect on aircraft performance. Introduction Propeller performance at low Reynolds numbers has become increasingly important in the design and performance prediction of unmanned air vehicles (UAVs).

Present an optimization platform developed for the design of high speed propellers. Demonstrate the optimization platform on a unique, novel open rotor propeller: The Boxprop. Provide insights from both the development and application of the optimization platform. Example of a Boxprop designed for cruise.

method, is an optimization algorithm named after statisticians, John Nelder and Roger Mead. It is a numerical method for minimizing an objective function in multi-dimensional space.

The NM method is one of the most commonly used nonlinear optimization algorithms. The NM method is simple, intuitive, and fairly stable. It approaches the optimum Author: Richard Biven. Propeller Analysis. The design method of the preceding section yields a propeller for one special condition, normally the cruise condition For off-design conditions, like takeoff, a propeller analysis method must be available.

This method should handle variable pitch as well. E.E. Larrabee [3] also presented for this problem a very simple. This conventional method for propeller performance scaling (ITTC’78) is used by many model basins.

More recent studies have shown that this method is not valid for every type of propeller design. For more conventional, simple designs the method is fairly accurate, but for more advanced (modern) designs with some skew and rake, completely.

Figure 1. Illustration of terms used to describe propellers. The radius, r, of the propeller, is the distance from the center to the tip, along the center chord length, c, is the straight-line width of the propeller at a given distance along the twist angle, β, is the local angle of the blade at a given distance along the radius (Hepperle, ).

The minimum weight design of helicopter rotor blades with constraints on multiple coupled flap-lag natural frequencies is studied in this paper. A constraint is also imposed on the minimum value of the autorotational inertia of the blade to ensure sufficient autorotational inertia to autorotate in case of an engine failure.

A stress constraint is used to guard against structural failure due to Cited by: 2. industry is also on that trend, and the propeller performance plays an important role. A good propeller should meet the requirements of the flight and push the aircraft with high performance on the aerodynamic characteristics.

For studying these characteristics of the propeller, the numerical study seems to be the best way to accomplish that Size: 1MB. The propeller diameter has a big impact on performance. Usually a larger propeller will have a higher efficiency, as it catches more incoming fluid and distributes its power and thrust on a larger fluid volume.

The same effect can be shown for lifting surfaces, which results in. Page 3 - Propeller hub — -The metal fitting inserted or incorporated in or with a propeller for the purpose of mounting it on the propeller or engine shaft.

Propeller interference — The amount by which the torque and thrust of a propeller are changed by the modification of the air flow in the slip stream produced by bodies placed near the propeller, such as engine, radiator, etc. ‎.classical propeller design methods, requiring instead more sophisticated optimization methods.

This paper presents an optimization platform developed for high speed propellers, and illustrates its use by performing a reduced aerodynamic optimization of the Boxprop.Prop Correct is used to prepare a Propulsion Optimization Quote that describes the propeller corrections necessary for optimum two phase process first documents the required 'level' of quality, then documents the enhanced design aspects that are to be applied to your propeller.

This quotation lists the tasks performed and the.