Nufsed Posted June 14, 2018 Share Posted June 14, 2018 Auto Throttle? Are you referring to ATTH on the AP menu? I thought that was Attitude Hold? i.e. put the aircraft into a bank with ALT Hold on and ATTH holds the bank. I can't find an auto throttle anywhere. :cry: The four things a Wingman is allowed to say... Two Lead, you're on fire. I'm bingo fuel. I'll take the fat one....:( [sIGPIC][/sIGPIC] Link to comment Share on other sites More sharing options...
MacTheGoon Posted June 14, 2018 Share Posted June 14, 2018 Auto Throttle!?? Autothrottle is a separate button you need to map onto your HOTAS. When engaged, you’ll see “ATC” in the lower right of the HUD Goon ASUS ROG Maximus VII |Intel i7-7700K@ 4.80Mhz|CORSAIR Vengeance LPX 32GB DDR4 @ 3000 |GTX 1080 Ti | Windows10-64bit| 3x24" Samsung 1080p| 1x 28" Samsung 4k| Thrustmaster Warthog| Saitek Rudder pedals| TrackIR 5 | Samsung Odyssey Link to comment Share on other sites More sharing options...
Nosferatuwhisky 1-1 Posted June 14, 2018 Share Posted June 14, 2018 The default key blind is T I believe. Def comes in handy for cruising. Keeps your speed from getting away from you. "Chops" Link to comment Share on other sites More sharing options...
fitness88 Posted June 14, 2018 Share Posted June 14, 2018 Does it just maintain the current speed or can you actually dial in a desired air speed? Link to comment Share on other sites More sharing options...
=4c=Nikola Posted June 14, 2018 Share Posted June 14, 2018 Basically, it's IAS hold mode. You cannot select desired speed. Do not expect fairness. The times of chivalry and fair competition are long gone. Link to comment Share on other sites More sharing options...
dotChuckles Posted June 14, 2018 Share Posted June 14, 2018 Basically, it's IAS hold mode. You cannot select desired speed. True airspeed not IAS. Freaked me out when I couldn't figure out why my IAS was dropping as I was in the climb at first. Then I realised it was holding my TAS. [sIGPIC][/sIGPIC] Link to comment Share on other sites More sharing options...
=4c=Nikola Posted June 14, 2018 Share Posted June 14, 2018 That's interesting. I've never seen autopilot with TAS hold feature... I find it relatively useless :D Do not expect fairness. The times of chivalry and fair competition are long gone. Link to comment Share on other sites More sharing options...
dotChuckles Posted June 14, 2018 Share Posted June 14, 2018 That's interesting. I've never seen autopilot with TAS hold feature... I find it relatively useless :D Your air nav calcs are done with TAS which is probably why it's done that way. In PA mode it holds your AoA as which is kind of IAS (sort of) From the NATOPS: 2.1.2.2 ATC Cruise Mode. The ATC cruise mode is engaged by pressing and releasing the ATC button on the left throttle with the FLAP switch in AUTO. When ATC is engaged in the cruise mode, the existing airspeed is used by the flight control computer to modulate engine thrust to maintain this existing airspeed. The existing airspeed is the airspeed being sent from the ADC to the flight control computers via the mission computers. An ADC failure inhibits the ATC cruise mode of operation. The FCC uses true airspeed from ADC via the mission computers at the time of engagement to generate a command signal. This signal is then used as a reference to generate an error signal that drives the engine mounted throttle control units. Normal disengagement is accomplished by pressing the ATC button or applying and holding force to either throttle. Automatic disengagement occurs for the following reasons: Flaps HALF or FULL ATC button fails FCES channel 2 or 4 fails FCS reversion to MECH or to DEL in any axis Left and right throttle angles differ by more than 10° for more than 1 second ADC true airspeed failure ADC degrade Any internal system failure [sIGPIC][/sIGPIC] Link to comment Share on other sites More sharing options...
dotChuckles Posted June 14, 2018 Share Posted June 14, 2018 (edited) IIRC correctly this would be the same as A/T mode on airliners after changeover speed or above ATC speed restriction level. Edit: Some of the features we should be getting are actually very similar to Boeing airliner FCS pages. Top of climb best cruise and climb performance calculators and all that good stuff if you're used to flying tubeliners. An IAS hold would be more like a combat auto throttle which would hold an airspeed to give you wing performance. The F-18 (if my reading of the NATOPS is correct) only gives you Cruise and Powered Approach mode. In cruise though you'd want TAS to be able to do your rules of thumb mental math for navigation with IAS being relatively useless for that at altitude. Edited June 14, 2018 by dotChuckles [sIGPIC][/sIGPIC] Link to comment Share on other sites More sharing options...
=4c=Nikola Posted June 14, 2018 Share Posted June 14, 2018 Airliners usually hold IAS and mach above changeover. TAS is practically useless in modern airliners. GS is used for nav. Do not expect fairness. The times of chivalry and fair competition are long gone. Link to comment Share on other sites More sharing options...
dotChuckles Posted June 14, 2018 Share Posted June 14, 2018 (edited) GS is used for nav. Except for, wind vectors, fuel use calculations, or anything involving movement through the air mass... which is my I said. "Mental math rules of thumb" and Mach is just a function of True Airspeed :-) Edit: Stab in the dark... but I would think that the use of TAS gives you less granularity then the mach number to two decimal places perhaps? Making a couple of things easier in co-coordinating between other aircraft. Just guessing though. It's not the first time I've seen TAS referenced in military flying as opposed to civilian. Edited June 14, 2018 by dotChuckles [sIGPIC][/sIGPIC] Link to comment Share on other sites More sharing options...
=4c=Nikola Posted June 14, 2018 Share Posted June 14, 2018 Holding constant TAS can exceed Mmo in airliner. I guess that's not a problem in F-18? I've never flown supersonic aircraft. About "Mental math rules of thumb", no one really expect you to do that anymore. Glorious days of airline flights are long gone. Do not expect fairness. The times of chivalry and fair competition are long gone. Link to comment Share on other sites More sharing options...
dotChuckles Posted June 14, 2018 Share Posted June 14, 2018 Holding constant TAS can exceed Mmo in airliner. I guess that's not a problem in F-18? I've never flied supersonic aircraft. About "Mental math rules of thumb", no one really expect you to do that anymore. Glorious days of airline flights are long gone. Haha! sadly true. I can still do a good few of those in my head. Always good as a confidence check though. 1:60 and drift rules are particularly handy still in sim flying. I've even been known to break out my CRP whizzwheel every now and then... just for fun :lol: And you're probably on the money about the busting the MMo as well as the ATC in the F-18 can't hold above mil power so you can't really get above M1.0 Like I said in my edit above... and I am totally guessing here, but I think TAS would offer you less granularity (if i'm using that word correctly) in coordinating with other aircraft, think formation flying here. The difference between say M.88 and M.89 is larger then one unit of TAS. But I'm totally guessing with that. Maybe a military flyer could offer insight? It's not the first time I've seen TAS referenced in military flying, so they proably have a good reason for choosing it over mach. [sIGPIC][/sIGPIC] Link to comment Share on other sites More sharing options...
Flamin_Squirrel Posted June 14, 2018 Share Posted June 14, 2018 I've even been known to break out my CRP whizzwheel every now and then... just for fun :lol: :huh: You mad man! Link to comment Share on other sites More sharing options...
dotChuckles Posted June 14, 2018 Share Posted June 14, 2018 :huh: You mad man! A little yes lol... I just find the mechanical nature of it pleasing. [sIGPIC][/sIGPIC] Link to comment Share on other sites More sharing options...
Nufsed Posted June 17, 2018 Author Share Posted June 17, 2018 Well I never knew that, thanks guys, much appreciated. The four things a Wingman is allowed to say... Two Lead, you're on fire. I'm bingo fuel. I'll take the fat one....:( [sIGPIC][/sIGPIC] Link to comment Share on other sites More sharing options...
RyboPops Posted June 17, 2018 Share Posted June 17, 2018 Note that APP ATC isn't currently working in DCS. Link to comment Share on other sites More sharing options...
Alphamale Posted June 17, 2018 Share Posted June 17, 2018 (edited) Basically, it's IAS hold mode. You cannot select desired speed. It's just like you car's cruise control...in that, you can't select the speed by dashboard entry either...but you can attain the speed you want and lock it there with ATC...My only question is that when you disengage ATC (A key bind), why can't you "Resume" by pressing "A" a second time? Hmmm, I know, that would require making another key bind (for erasing the set speed) Edited June 17, 2018 by Alphamale Link to comment Share on other sites More sharing options...
REDEYE_CVW-66 Posted June 17, 2018 Share Posted June 17, 2018 The strange thing for me is; the ATC works well: when I engage it, I see the throttles moving and keeping the airspeed I set, however, only one time did the "ATC" cue pop up in the HUD. Usually I don't get it, even though the ATC is clearly in effect. Anyone else see this? Link to comment Share on other sites More sharing options...
pii Posted June 17, 2018 Share Posted June 17, 2018 The strange thing for me is; the ATC works well: when I engage it, I see the throttles moving and keeping the airspeed I set, however, only one time did the "ATC" cue pop up in the HUD. Usually I don't get it, even though the ATC is clearly in effect. Anyone else see this? Sometimes I lose stuff on the HUD if I'm zoomed in and don't realize it not in normal viewing/zoom level. So see if backing up your view helps Link to comment Share on other sites More sharing options...
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