- Joined
- Jun 7, 2011
- Messages
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To All:
A new version of the free RASAero II software (Version 1.0.1.0) has been released, and is available for download from the RASAero web site at www.rasaero.com . A link to the new version of the RASAero II software is on the home page, or click on the RASAero II Software and RASAero II Users Manual buttons to access the web pages to download the new version of the software and the updated users manual.
The updates to RASAero II in the Version 1.0.1.0 of the software are listed below.
RASAero II Version 1.0.1.0 Release Date August 5, 2016
Changed the recommended stability margin for subsonic Mach numbers to a stability margin of 1.0 calibers, kept the recommended stability margin for transonic and supersonic Mach numbers at 2.0 calibers, for the marginal stability warning message.
Added extension to power-on base drag model for very large nozzle exit diameters at supersonic and hypersonic Mach numbers, with the nozzle exit area filling a large portion of the rocket base area, for more accurate power-on drag coefficient (CD) predictions for first and second stages of satellite launch vehicles.
Added stability margin (calibers) to the Flight Simulation plots.
Added additional outputs to the Flight Simulation Excel (.CSV) output file.
The extension to the power-on base drag model for very large nozzle exit diameters at supersonic and hypersonic Mach numbers came about from RASAero II being used to generate aero data for flight simulations for orbital launch vehicles for undergraduate/graduate student studies and for proposed small space launch vehicles. Launch vehicles, in particular the second stages of launch vehicles, can have very large nozzle exit areas that fill most of the base area of the first or second stage. For a launch vehicle on an ascent trajectory to orbit almost all of the flight within the atmosphere is power-on relative to the drag coefficients (CDs) used for the launch vehicle.
The RASAero II authors, Chuck Rogers and David "Coop" Cooper, are always looking for high power rocket and Tripoli Research/amateur rocket flight data to compare the RASAero II altitude predictions against to further develop and improve the RASAero II aerodynamic prediction and altitude prediction models. The flight data and rocket information can be sent to the e-mail address below.
Additional information on the RASAero II software can be found on the RASAero web site at www.rasaero.com . The RASAero II authors, Charles E. (Chuck) Rogers and David (Coop) Cooper can be contacted at [email protected] .
Chuck Rogers
Rogers Aeroscience
A new version of the free RASAero II software (Version 1.0.1.0) has been released, and is available for download from the RASAero web site at www.rasaero.com . A link to the new version of the RASAero II software is on the home page, or click on the RASAero II Software and RASAero II Users Manual buttons to access the web pages to download the new version of the software and the updated users manual.
The updates to RASAero II in the Version 1.0.1.0 of the software are listed below.
RASAero II Version 1.0.1.0 Release Date August 5, 2016
Changed the recommended stability margin for subsonic Mach numbers to a stability margin of 1.0 calibers, kept the recommended stability margin for transonic and supersonic Mach numbers at 2.0 calibers, for the marginal stability warning message.
Added extension to power-on base drag model for very large nozzle exit diameters at supersonic and hypersonic Mach numbers, with the nozzle exit area filling a large portion of the rocket base area, for more accurate power-on drag coefficient (CD) predictions for first and second stages of satellite launch vehicles.
Added stability margin (calibers) to the Flight Simulation plots.
Added additional outputs to the Flight Simulation Excel (.CSV) output file.
The extension to the power-on base drag model for very large nozzle exit diameters at supersonic and hypersonic Mach numbers came about from RASAero II being used to generate aero data for flight simulations for orbital launch vehicles for undergraduate/graduate student studies and for proposed small space launch vehicles. Launch vehicles, in particular the second stages of launch vehicles, can have very large nozzle exit areas that fill most of the base area of the first or second stage. For a launch vehicle on an ascent trajectory to orbit almost all of the flight within the atmosphere is power-on relative to the drag coefficients (CDs) used for the launch vehicle.
The RASAero II authors, Chuck Rogers and David "Coop" Cooper, are always looking for high power rocket and Tripoli Research/amateur rocket flight data to compare the RASAero II altitude predictions against to further develop and improve the RASAero II aerodynamic prediction and altitude prediction models. The flight data and rocket information can be sent to the e-mail address below.
Additional information on the RASAero II software can be found on the RASAero web site at www.rasaero.com . The RASAero II authors, Charles E. (Chuck) Rogers and David (Coop) Cooper can be contacted at [email protected] .
Chuck Rogers
Rogers Aeroscience