Picture from here
What's the shiny, slightly curved triangular plate with rails above it?
A larger version, cropped from here, thanks to a comment by ohsin.
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asked Feb 12, 2019 at 23:09
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1$\begingroup$ @OrganicMarble so it seems that the 2011 post-drilling vacuum patch held? $\endgroup$– uhohFeb 13, 2019 at 1:40
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2$\begingroup$ A better image(Progress 68) commons.wikimedia.org/wiki/… It was present in 2000 spaceflight.nasa.gov/gallery/images/station/progress/html/… $\endgroup$– OhsinFeb 13, 2019 at 5:26
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6$\begingroup$ A close up of Ohsin's image suggests it is an antenna. $\endgroup$– user20636Feb 13, 2019 at 9:03
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2$\begingroup$ Thermal exhaust port. For we all know what happens when you leave it open. $\endgroup$– void_ptrFeb 13, 2019 at 18:40
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1$\begingroup$ [This image][1] shows the same feature on an unlaunched Progress vehicle in the factory. It looks very much like a [triangular microstrip antenna for satellite comms][2]. The only supplier of microstrip patch antennas for space systems that I know of is USA-based AntDevCo in Las Cruces, NM. Looks like Ivan has started building his own, prolly as part of the EKTS. [1]: spaceflight101.com/spacecraft/wp-content/uploads/sites/18/2015/… [2]: link.springer.com/article/10.1007/s11277-016-3803-x $\endgroup$– Jan van OortAug 30, 2019 at 8:01
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