SBIR 95-1 SOLICITATION
OPTIMAL DESIGN OF LAMINAR FLOW WINGS
We propose to develop an innovative product that will be used to design natural
laminar flow (NLF) and hybrid laminar flow control (HLFC) airfoils. The objective
is to delay the transition to turbulence for the purposes of drag reduction. A
unique feature of this product is the application of a systematic procedure for
the design of optimal three-dimensional wing geometry and control system configurations.
The explicit identification of constraining factors that inhibit design improvement
is also unique. Optimizing the stability characteristics for boundary layer instabilities
using inverse methods is unprecedented. This development is achieved by an innovative
combination of parabolised stability equation (PSE) methodology and recent developments
in adjoint methods. Non-parallel flow and wall-curvature effects are incorporated.
Bonus features include rapid computation, a receptivity analysis, and a complete
analysis of the most effective control strategies. There is a demand for this product in
laminar wing design for commercial and military vehicles and in particular for
the high speed civil transport (HSCT). It will reduce design cycle times for laminar
flow wings by providing trial designs more quickly and with accurate modelling.
Costly wind tunnel testing will be reduced, as will very costly flight testing.
Potential Commercial Applications:
There is a universal demand for drag reduction on aerospace vehicles. This tool
will find application with aircraft designers and manufacturers aiming at efficient
wing, nacelle, and control surface design. Development of a high speed civil
transport (HSCT) as a commercially viable vehicle requires laminar flow wings.
This product will find application with the HSCT design project.
Name and Address of Offeror:
DynaFlow, Inc., P.O. Box 21319, Columbus, Ohio 43221, USA.
Small Business Innovation Research Program (SBIR) &
Small Business Technology Transfer Program (STTR) Programs
Electronic Management System (EMS)
National Aeronautics and Space Administration (NASA)
The SBIR/STTR EMS site is maintained by Steve
Hu, Hughes STX.
For comments and questions, contact
Updated: Feb. 7, 1996