pjvr99 Posted March 30, 2010 Share Posted March 30, 2010 ... moved ........ Quote Link to comment Share on other sites More sharing options...
Moe81 Posted November 11, 2015 Share Posted November 11, 2015 Hi guys , why the torque indicating system have two shaft , torque shaft and reference shaft ? Can any one help me Quote Link to comment Share on other sites More sharing options...
Lkuest Posted November 11, 2015 Share Posted November 11, 2015 When you leave on a journey and look at a map, how do you know how far you have traveled without knowing the exactly where you started? The torque shaft twists with the forces of the engine spinning one direction, and the propeller trying to slow the engine down. The more power the engine puts out, the more the shaft twists. How would you measure it though, without knowing what an un-twisted shaft looks like? This is why we have two shafts. One shaft transmits the torque, and twists while doing it, and the other shaft is a reference for the original, zero torque position. The bigger difference between the twisted shaft and the untwisted shaft, the larger the torque required to make that difference, and the higher reading we get on the indicator. Quote Link to comment Share on other sites More sharing options...
nascarpop Posted November 11, 2015 Share Posted November 11, 2015 Great explanation, Lkuest!!!! Quote Link to comment Share on other sites More sharing options...
Moe81 Posted November 11, 2015 Share Posted November 11, 2015 4 hours ago, Lkuest said: When you leave on a journey and look at a map, how do you know how far you have traveled without knowing the exactly where you started? The torque shaft twists with the forces of the engine spinning one direction, and the propeller trying to slow the engine down. The more power the engine puts out, the more the shaft twists. How would you measure it though, without knowing what an un-twisted shaft looks like? This is why we have two shafts. One shaft transmits the torque, and twists while doing it, and the other shaft is a reference for the original, zero torque position. The bigger difference between the twisted shaft and the untwisted shaft, the larger the torque required to make that difference, and the higher reading we get on the indicator. Thanks man. That very clear and pro. Quote Link to comment Share on other sites More sharing options...
AMPTestFE Posted November 13, 2015 Share Posted November 13, 2015 On 3/29/2010, 11:02:57, herky400M said: This particular FE has a job a to accompany new FE's. and out of the blue this question pop's up. So my answer was: if the TIT indication and the oil temp indication are the same before the 1st start of the day, then there is nothing to worry about! wheather influence is the key player to the difference in left and right wing.... but anyway: pilots and FE without maintenance are just pedestrians with flightjackets and funny sunglasses :cool: Haha, maintainers without aircrew are....unemployed. Or was it the other way around? Quote Link to comment Share on other sites More sharing options...
GVS Posted November 14, 2015 Share Posted November 14, 2015 Works both ways.With nearly 35 years in acft. maint.,I don't think I ever met a flt.crew member or maintainer who saw it any different! Quote Link to comment Share on other sites More sharing options...
AMPTestFE Posted November 16, 2015 Share Posted November 16, 2015 Yeah, that's what I was getting at...especially since I (like many of us) have experience on both sides of the fence. Quote Link to comment Share on other sites More sharing options...
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