petermaxkoller 30 Posted May 13, 2021 Share Posted May 13, 2021 Hi all Very happy with the CRJ 700 flying on VATSIM. As controller I have the Thrustmaster TCA Airbus. Calibrated including the reversers with the inbuilt calibration page in the CRJ tablet; works very good. When I switch on the two engines, N1 goes to about 20% idle, very good. Then I switch on the Anti-ice ON allready on ground, the engines N1 goes up to 45% N1. Switching Anti-ice OFF returns to 20% N1. Is this normal or schould I only put Anti-Ice ON during flight? Thanks Peter Link to comment https://forum.aerosoft.com/index.php?/topic/163692-strange-idle-increase-from-20-to-45-when-switching-anti-ice-on/ Share on other sites More sharing options...
Nico Hartmann 7 Posted May 13, 2021 Share Posted May 13, 2021 For what I know, the N1 should not be linked to whether or not anti ice ist s enabled. But i think anti ice is switched on during takeoff (affects perfomance calculations) under certain icing conditions, otherwise is kept off while not in flight Link to comment https://forum.aerosoft.com/index.php?/topic/163692-strange-idle-increase-from-20-to-45-when-switching-anti-ice-on/#findComment-1041042 Share on other sites More sharing options...
KuntaKinte 210 Posted May 13, 2021 Share Posted May 13, 2021 The attached table shows the correct usage of the anti-ice system. As for the engine RPM: In flight and only when selecting WING A/I ON the engine idle RPM is raised automatically by the FADEC to ensure that the airpressure in the pneumatic duct is sufficient for effective wing anti-icing. This results in a considerable increase of idle thrust. On ground, the selection of COWL A/I and/or WING A/I has no influence on engine RPM. Unfortunately, this is not modeled correctly. COWL ON OFF On ground Temp- <= 10°C If not required AND visible moisture OR OR contaminated surface Entering parking stand In flight In icing conditions If not required OR ICE message WING ON OFF On ground Temp- <= 5°C If not required [AND visible moisture OR contaminated runway] OR AND for takeoff only After landing (leaving the runway) In flight [In icing conditions AND IAS < 230 KIAS] If not required OR ICE message Edit: Copyright reasons - sorry Link to comment https://forum.aerosoft.com/index.php?/topic/163692-strange-idle-increase-from-20-to-45-when-switching-anti-ice-on/#findComment-1041048 Share on other sites More sharing options...
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