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Some recent advances in computational aerodynamics for helicopter applications
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Baeder, J. D. McCroskey, W. J. |
| Copyright Year | 1985 |
| Description | The growing application of computational aerodynamics to nonlinear helicopter problems is outlined, with particular emphasis on several recent quasi-two-dimensional examples that used the thin-layer Navier-Stokes equations and an eddy-viscosity model to approximate turbulence. Rotor blade section characteristics can now be calculated accurately over a wide range of transonic flow conditions. However, a finite-difference simulation of the complete flow field about a helicopter in forward flight is not currently feasible, despite the impressive progress that is being made in both two and three dimensions. The principal limitations are today's computer speeds and memories, algorithm and solution methods, grid generation, vortex modeling, structural and aerodynamic coupling, and a shortage of engineers who are skilled in both computational fluid dynamics and helicopter aerodynamics and dynamics. |
| File Size | 745562 |
| Page Count | 22 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19860002740 |
| Archival Resource Key | ark:/13960/t8wb0288s |
| Language | English |
| Publisher Date | 1985-10-01 |
| Access Restriction | Open |
| Subject Keyword | Aerodynamics Navier-stokes Equation Turbulence Transonic Flow Algorithms Computational Fluid Dynamics Helicopters Vortices Finite Difference Theory Flow Distribution Grid Generation Mathematics Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
