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For the second time hesham, NOT PROJECT RELATED. Post in correct forum!
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Seems, that this image is initial version of already published drawing:Drawing of E-155 (1960)
These files are supplemented each other: the earlier one has clear inscriptions to the items, the later one - better image quality.Its actually just a bigger copy of the same drawing.
So what was the reasoning behind the canards - additional stability control?
So what was the reasoning behind the canards - additional stability control?
The foreplanes on Ye-8, Ye-152 and potentially MiG-25 were intended to offset the change in centre of lift during the transition to supersonic flight. In subsonic flight the foreplanes were allowed to free-stream, but in supersonic flight they were locked in place to bring the centre of lift back forward and prevent some of the supersonic stability issues. Essentially the same concept as the glove vanes on the F-14 Tomcat.
They were found to be unnecessary on the MiG-25 and removed - probably to save weight. It was suggested that the horizontal intake ramps generated additional lift when supersonic which made the canards unneeded.
From "Unflown wings" Yefim Gordon and Sergey Komissarov. 2013. page 167Here's the cutaway I think Motocar is referring to. However you need a big pinch of salt. In the book seating is one abreast down the LHS with an aisle to the right. The drawing shows two and an aisle something would have to be quite tiny....
New link for the Flight article https://www.flightglobal.com/class-struggle/48677.article