jmattson wrote:Morning everyone, could someone explain the pros to having a LRI? What does it do that an airspeed indicator won't? Is there maybe a website to look at that will explain everything? Maybe a past post that I missed? Forgive me, I'm new to this particular instrument... Thanks guys!
Rynoth wrote:One note on LRI vs AOA, I like to call LRI poor-pilot's AOA because while similar, it's not as accurate when it comes to accelerated stalls. You'll calibrate the LRI to be correct at approach/landing airspeed, where it will be giving you a relatively accurate representation of AOA relative to stall, but at higher airspeeds you can enter an accelerated stall with the LRI still in the green. This is because it's not a vane measuring actual AOA, it's just measuring pressure differential, and higher airspeeds means more overall pressure entering the 2 holes... I could go on but it gets technical. Point is, you get LRI for added safety information at low speeds (climbout, approach, landing.)
Bryan Cotton wrote:Just to provide another perspective - and no disrespect meant to any Navy pilots or builders installing a LRI- it is not a required instrument. !
radfordc wrote:Have you actually verified that the LRI isn't accurate at higher airspeeds? I was under the impression that even though the actual dynamic air pressure is higher at higher speeds the difference remains the same. And "difference" in pressure at the two ports is what the instrument measures.
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