December 19, 201114 yr My Googling skills are, apparently, pretty lousy! I never seem to find stuff that others can (as I discover when I give up and ask the question here instead). Just Googled 'INS IRS APU which aircraft' and similar. Can't see the answers I am looking for, so here we go again. Maybe someone can help....I simply wanted to know if there is a list somewhere of which a/c are equipped with an IRS system these days, which have INS - and (different of course) which have an APU. Not so easy as it might appear, as I know (for example) the B707 PAX version had no APU, whereas the cargo version did.Can anyone help please, at least for Boeings & Airbuses if no others. Thanks!Martin Martin Stebbing, EGLF (UK)
December 19, 201114 yr I would guess all large aircraft today have INS/IRS/APU and GPS (even if it's only an iPhone in the captain's pocket).Cheers,- jahman.
December 20, 201114 yr Author But which have INS and which have IRS - and for flying older a/c in FS, which would have an APU and which not? This is more for FS than real world, as some of the planes I fly are almost museum pieces now (b707s etc.)M. Martin Stebbing, EGLF (UK)
December 20, 201114 yr Most commercial aircraft have "Inertial Navigation". Some also use GPS as an update (triangulation) fix and also for navigation on the ground. Nowadays Inertial navigation has come a long way and has many different configurations and therefore designations. "INS" usually refers to the earlier installations for a/c such as the VC10, L1011, Concorde etc.If you download one or two of the "classic" a/c they often come with the Delco Carousel INS gauge. Surprisingly the manuel for this gauge is more comprehensive than the original! When you think that the installation of the Delco Carousel INS cost as much as an entire GA aircraft!!vololiberista Super VC10 into LOWI with PF3 at a cinema near you https://www.youtube.com/watch?v=298UDyNmgUA
December 20, 201114 yr INS = IRSCheers,- jahman.Actually not. Some acft are equipped with AHRS (attitude-heading reference system), which is an inertial system that does not provide lateral position data. An AHRS is one example of an IRS that is not an INS. Bob Scott | President and CEO, AVSIM Inc ATP Gulfstream II-III-IV-V Sys1 (MSFS20+24/XPlane12+11): AMD 9800X3D, water 2x240mm, MSI MPG X670E Carbon, 64GB GSkill 6000/30, nVidia RTX4090FE Alienware AW3821DW 38" 21:9 GSync, 2x4TB Crucial T705 PCIe5 + 2x2TB Samsung 990 SSD, EVGA 1000P2 PSU, 12.9" iPad Pro Thrustmaster TCA Boeing Yoke, TCA Airbus Sidestick, Twin TCA Airbus Throttle quads, PFC Cirrus Pedals, Coolermaster HAF932 case Sys2 (P3Dv5/v4): i9-13900KS, water 2x360mm, ASUS Z790 Hero, 32GB GSkill 7800MHz CAS36, ASUS RTX4090 Samsung 55" JS8500 4K TV@60Hz, 3x 2TB WD SN850X 1x 4TB Crucial P3 M.2 NVME SSD, EVGA 1600T2 PSU Fiber link to Yamaha RX-V467 Home Theater Receiver, Polk/Klipsch 6" bookshelf speakers, Polk 12" subwoofer, 12.9" iPad Pro PFC yoke/throttle quad/pedals with custom Hall sensor retrofit, Thermaltake View 71 case, Stream Deck XL button box Sys3 (DCS/P3Dv4/ATS/ETS): AMD 7800X3D, MSI MPG X870E Carbon, Noctua NH-D15S, 64GB GSkill 6000/30, EVGA RTX3090 Alienware AW3420DW 34" 21:9 GSync, Corsair HX1000i PSU, 4TB Crucial T705 PCIe5 + 2TB Samsung 970Evo Plus, TM TCA Officer Pack, Saitek combat pedals, TM Warthog, TM RS300 FF wheel/pedals, Coolermaster HAF XB case
December 20, 201114 yr HelloWell, not exactly but close.Yes, for the purpose of the OP. :-)Cheers,- jahman.
December 22, 201114 yr Author Actually INS=IRS is an incorrect equation :-) ... The latter was only installed into later aircraft, older planes like the B747-300 had an INS system, whereas the later 747-400 has an IRS system. They are similar, but not the same thing. The INS has moving gyros for one thing - the IRS is 100% solid state...Martin Martin Stebbing, EGLF (UK)
December 22, 201114 yr Whilst it is true that INS had physical gyros, the types fitted to the VC10 and Concorde had laser gyros. The laser gyros were quite substantive compared to modern systems which as you say are quite small in size.vololiberista Super VC10 into LOWI with PF3 at a cinema near you https://www.youtube.com/watch?v=298UDyNmgUA
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