EFFECTS OF DIFFERENT PROPELLER MODELS ON OPEN ROTOR FUEL CONSUMPTION
Conference contribution, 2013

In this study three different ways to represent a counter rotating propeller are evaluated. One where a map for a single rotating propeller is used, one where most of the swirl losses are excluded from the original map, and one where swirl losses are excluded and the position of the maximum efficiency is determined by the design disc loading. The two methods using the reduced swirl maps generate similar trends with similar size propellers for the optimal design and similar fuel burn figures. If the original single rotating map is used to represent counter rotating propellers the trends are significantly changed and are viewed to be unphysical. The optimal size propeller is then closer to 4.5 m rather than 3.5 meters. With the maps where a reduction in swirl losses are accounted for, the trends show a slightly decreasing fuel consumption with decreasing tip speed. If the single rotating propeller map is used there is an opposite trend and it is of higher magnitude.

aircraft engine

Open rotor

propeller

Author

Linda Larsson

Chalmers, Applied Mechanics, Fluid Dynamics

Anders Lundbladh

Tomas Grönstedt

Chalmers, Applied Mechanics, Fluid Dynamics

International Society for Airbreathing Engines, ISABE, Busan, South Korea, 2013

ISABE-2013-1712

Driving Forces

Sustainable development

Areas of Advance

Transport

Subject Categories

Vehicle Engineering

More information

Created

10/6/2017