Project Title:
Optimization Procedure for Aerodynamic Design for Advanced Turbo Propeller
01.01-8500
Optimization Procedure for Aerodynamic Design for Advanced Turbo Propeller
Flow Industries Inc.
21414 68th Avenue South
Kent
WA
98032
Jou
Wen-Huei
NAS3-24855
Amount:
LeRC
NAS3-24533
Abstract:
In recent years, the turboprop propulsion system has received increasinginterest due to substantial savings that can be achieved in fuel consumption. Substantial
resources have been invested in developing new technologies for aerodynamic design,
aeroacoustic performance, aerodynamic structural design, power generation and power
transmission. In propeller design, prediction codes are available to assist design
engineers. However, optimization of the design requires manual manipulation of the
propeller configuration guided by experience and intuition. The objective of the
proposed Phase II work is to develop an automated aerodynamic design code by combining
a prediction code and a numerical optimization procedure. In Phase I, the feasibility
of using numerical optimization as a design tool was demonstrated by optimizing the
twist distribution of the blades for an incompressible flow. The objective was to
maximize the propeller at operating Mach numbers of approximately 0.8. In designing
the propeller, shock wave effects must be considered. The design objective for Phase
II will therefore include the requirements that choking be prevented near the hub
and that the strength of shock waves near the blade tip be as weak as possible to
increase efficiency and reduce noise.