Loading...
Please wait, while we are loading the content...
Similar Documents
Skylon aerodynamics and sabre plumes
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Pandya, Shishir Afosmis, Michael Mehta, Unmeel Bowles, Jeffrey |
| Copyright Year | 2015 |
| Description | An independent partial assessment is provided of the technical viability of the Skylon aerospace plane concept, developed by Reaction Engines Limited (REL). The objectives are to verify REL's engineering estimates of airframe aerodynamics during powered flight and to assess the impact of Synergetic Air-Breathing Rocket Engine (SABRE) plumes on the aft fuselage. Pressure lift and drag coefficients derived from simulations conducted with Euler equations for unpowered flight compare very well with those REL computed with engineering methods. The REL coefficients for powered flight are increasingly less acceptable as the freestream Mach number is increased beyond 8.5, because the engineering estimates did not account for the increasing favorable (in terms of drag and lift coefficients) effect of underexpanded rocket engine plumes on the aft fuselage. At Mach numbers greater than 8.5, the thermal environment around the aft fuselage is a known unknownâa potential design and/or performance risk issue. The adverse effects of shock waves on the aft fuselage and plumeinduced flow separation are other potential risks. The development of an operational reusable launcher from the Skylon concept necessitates the judicious use of a combination of engineering methods, advanced methods based on required physics or analytical fidelity, test data, and independent assessments. |
| File Size | 1978795 |
| Page Count | 21 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20150015818 |
| Archival Resource Key | ark:/13960/t5v74ff21 |
| Language | English |
| Publisher Date | 2015-07-06 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Design, Testing And Performance Aerodynamics Aerodynamic Drag Rocket Engines Aerodynamic Coefficients Computerized Simulation Plumes Shock Waves Thermal Environments Air Breathing Engines Fuselages Free Flow Separated Flow Mach Number Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
