Next Article in Journal
A New Hybrid Technique for Minimizing Power Losses in a Distribution System by Optimal Sizing and Siting of Distributed Generators with Network Reconfiguration
Previous Article in Journal
Research on the Hydrodynamic Performance of a Vertical Axis Current Turbine with Forced Oscillation
Article Menu

Export Article

Open AccessArticle
Energies 2018, 11(12), 3350; https://doi.org/10.3390/en11123350

Feasible Concept of an Air-Driven Fan with a Tip Turbine for a High-Bypass Propulsion System

College of Energy and Power, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, Jiangsu, China
*
Author to whom correspondence should be addressed.
Received: 19 October 2018 / Revised: 15 November 2018 / Accepted: 27 November 2018 / Published: 30 November 2018
Full-Text   |   PDF [5336 KB, uploaded 30 November 2018]   |  

Abstract

The reduction in specific fuel consumption (SFC) is crucial for small/mid-size cost-controllable aircraft, which is very conducive to reducing cost and carbon dioxide emissions. To decrease the SFC, increasing the bypass ratio (BPR) is an important way. Conventional high-BPR engines have several limitations, especially the conflicting spool-speed requirements of a fan and a low-pressure turbine. This research proposes an air-driven fan with a tip turbine (ADFTT) as a potential device for a high-bypass propulsion system. Moreover, a possible application of this ADFTT is introduced. Thermodynamic analysis results show that an ADFTT can improve thrust from a prototype turbofan. As a demonstration, we selected a typical small-thrust turbofan as the prototype and applied the ADFTT concept to improve this model. Three-dimensional flow fields were numerically simulated through a Reynolds averaged Navier-Stokes (RANS)-based computational fluid dynamics (CFD) method. The performance of this ADFTT has the possibility of amplifying the BPR more than four times and increasing the thrust by approximately 84% in comparison with the prototype turbofan. View Full-Text
Keywords: high-bypass ratio engines; tip turbine; air-driven fan; aerodynamic analysis high-bypass ratio engines; tip turbine; air-driven fan; aerodynamic analysis
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Huang, G.; Xiang, X.; Xia, C.; Lu, W.; Li, L. Feasible Concept of an Air-Driven Fan with a Tip Turbine for a High-Bypass Propulsion System. Energies 2018, 11, 3350.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top