I am asking in context of interaction of propulsive effects on external aircraft drag. If a model was tested with blocked intake. Do i need to correct its drag data. How to account for these effects?
Hi,
your WT-Model should be adapted for one Mass-flow at one condition. If your are interested in the drag at a cruise condition for example, perfom the WT-Tests at that specific reynolds number, and further there should be some comparative calculations for the other test conditions, which are preferably done by CFD. In this way, you must always account for the corrections starting from the most likely test condition you are performing. Another way, would be to have two or 3 different configurations for your WT-test.
Best Regards!
Thank you @ Stefan
i am trying to apply reynold no corrections as my data is not in reynold number regime and also want to use CFD for off design mass flow conditions to add to spillage drag. Can you suggest any reference material?
Hi..
try looking at: Fluid-Dynamic Drag - Hoerner,
Not sure if there is all Information, but you might find something about Reynolds Effects.
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