Poutine Posted February 3, 2014 Posted February 3, 2014 Just wondering what that little white thing is that moves side to side (below #4) is. I am given the impression that it is just a bank indicator showing which side (wing) is low. Or is it something else Jane's ATF Gold (1997), DCS World A-10C M5A99Xevo, SAPPHIRE HD-7770-OC, AMD FX-6100, 8GB RAM, WIN7-64 TM HOTAS Warthog, Saitek Combat Pedals, TrackIR5, Sennheiser PC363D, MFD Cougar Pack, Samsung UHD U28D590D and Local Craft Beer
Kaiza Posted February 3, 2014 Posted February 3, 2014 (edited) It is a rate of turn indicator. 1 needle width deflection = rate one turn which is a heading change of 3 degrees per second (ie a 180 degree turn in 1 min). Two width deflection = rate 2. Mainly used for IFR work or redundancy for the ADI. The angle of bank to achieve a rate one turn changes with airspeed. A rough rule of thumb is your TAS/10 +7 = required AoB. So at 200kts, rate one = roughly 27 degrees AoB. Edited February 3, 2014 by Kaiza [url=http://www.aef-hq.com.au/aef4/forumdisplay.php?262-Digital-Combat-Simulator][SIGPIC]http://img856.imageshack.us/img856/2500/a10161sqnsignitureedite.png[/SIGPIC][/url]
Rangi Posted February 3, 2014 Posted February 3, 2014 some good explanations here http://forums.eagle.ru/showthread.php?t=106360 PC: 6600K @ 4.5 GHz, 12GB RAM, GTX 970, 32" 2K monitor.
Nealius Posted February 3, 2014 Posted February 3, 2014 A rough rule of thumb is your TAS/10 +7 = required AoB. So at 200kts, rate one = roughly 27 degrees AoB. That's interesting....I saw somewhere else the formula was TAS/10 + TAS/20.
Poutine Posted February 3, 2014 Author Posted February 3, 2014 thx Kaiza for your excellent description. I couldn't find anything on it That said my thinking was pretty close. Jane's ATF Gold (1997), DCS World A-10C M5A99Xevo, SAPPHIRE HD-7770-OC, AMD FX-6100, 8GB RAM, WIN7-64 TM HOTAS Warthog, Saitek Combat Pedals, TrackIR5, Sennheiser PC363D, MFD Cougar Pack, Samsung UHD U28D590D and Local Craft Beer
PFunk1606688187 Posted February 5, 2014 Posted February 5, 2014 That's interesting....I saw somewhere else the formula was TAS/10 + TAS/20. Whats interesting is the formula I have produces the exact same figure as yours but is done as follows: TAS divided by 10 then added to 1/2 of that divided figure, ie. 230/10=23 23/2=11.5 23+11.5=34.5 Same as yours: 230/10=23 230/20=11.5 23+11.5=34.5 Warning: Nothing I say is automatically correct, even if I think it is.
Nealius Posted February 5, 2014 Posted February 5, 2014 After researching I found the most common formula actually is TAS/10 + 7, but that gives a 30 degree bank for 230kts.
PFunk1606688187 Posted February 5, 2014 Posted February 5, 2014 So is this instrument supposed to simply slide all the way to one side to do a rate 1 turn? I'm a little confused with what its supposed to look like for a correct Rate 1 and Rate 2 turn. Warning: Nothing I say is automatically correct, even if I think it is.
tangodownNZ Posted September 16, 2017 Posted September 16, 2017 There's no key to denote the numbers?
Razor18 Posted September 18, 2017 Posted September 18, 2017 So is this instrument supposed to simply slide all the way to one side to do a rate 1 turn? I'm a little confused with what its supposed to look like for a correct Rate 1 and Rate 2 turn. One needle WIDTH to either side. Rate 1 turn to the right means your needle is off to the right, about aligning with the black space/mark above it. In a rate 2 turn, your needle is off to the right 2 needle width, meaning about aligning with the white mark on the right side, above the needle.
Frederf Posted September 20, 2017 Posted September 20, 2017 I don't think it's 3 (rate 1) and 6 dps (rate 2). It should be 1.5 (half rate) and 3 dps (rate 1). Fast military jets, airliners, etc. doing standard rate is actually quite fast so often they revert to half rate for most IFR tasks. I checked and 2 minute turn was the movable indicator kind of but not quite lined up with the static white band. I'm guessing that's what is intended (lined up = 2 minute) but DCS confused yaw rate with heading change rate (which are only equal when bank is 0). 1/2 rate (4 min turn) seems to be when the needle is lined up with the black band more or less. Gauge info is sourced from HARS at all times.
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