Might be possible. The frequency of the AC component of the pressure and the amplitude should change as the flow becomes turbulent. AC is good as offsets, temperature effects don't cause problems. Silicon pressure tranducers easily go out to one kilohertz frequency response unless they are the ones with digital converters built in.
As a result of some flight testing over the last few years we do know that there is a fair bit of noise on the airspeed measurement even in a glider. More in the power plane, not linked to engine or prop frequencies. Didn't get to figure out if if was the pitot or static causing it. Come to think of it one of those $5 crystal microphone inserts might do the job. Mike > On 27 Dec 2014, at 6:14 pm, Anthony Smith <[email protected]> > wrote: > > Actually, I was thinking a flush mounted static probe rather than a pitot. > It would be interesting to see if a transducer could pick up the pressure > fluctuations from separated flow and be able to see the difference from > attached flow. > > After doing some work with the RAAF's P-3 wing tips, I am pretty sure it is > feasible. > > > > -----Original Message----- > > I saw a photo from 30 years ago of your upper wing surface near the trailing > edge pitot probe, Anthony. Pressure should be equal to pitot until the > thickening separated boundary layer encompasses the wing probe when the > pressure difference should increase rapidly. Might be useful on some gliders > which are very well behaved at low speeds and thermal nicely but don't climb > well unless flown a fair bit faster. > > _______________________________________________ > Aus-soaring mailing list > [email protected] > To check or change subscription details, visit: > http://lists.internode.on.net/mailman/listinfo/aus-soaring > On 27 Dec 2014, at 6:14 pm, Anthony Smith <[email protected]> > wrote: > > Actually, I was thinking a flush mounted static probe rather than a pitot. > It would be interesting to see if a transducer could pick up the pressure > fluctuations from separated flow and be able to see the difference from > attached flow. > > After doing some work with the RAAF's P-3 wing tips, I am pretty sure it is > feasible. > > > > -----Original Message----- > > I saw a photo from 30 years ago of your upper wing surface near the trailing > edge pitot probe, Anthony. Pressure should be equal to pitot until the > thickening separated boundary layer encompasses the wing probe when the > pressure difference should increase rapidly. Might be useful on some gliders > which are very well behaved at low speeds and thermal nicely but don't climb > well unless flown a fair bit faster. > > _______________________________________________ > Aus-soaring mailing list > [email protected] > To check or change subscription details, visit: > http://lists.internode.on.net/mailman/listinfo/aus-soaring
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