Bankler Posted June 8, 2020 Posted June 8, 2020 What are these? Top one (A) seems fuel related, maybe estimated fuel on arrival on the currenlty selected wp/tcn? Buttom one (B) seems distance related. It seems to count down towards "something". But I don't know what exactly. Maybe like a top of descent thingy or something? Bankler's CASE 1 Recovery Trainer
Tholozor Posted June 8, 2020 Posted June 8, 2020 You're pretty much right on the money, A is the estimated fuel remaining once you reach the selected navigation point, B is the estimated distance-to-go to begin optimal rate-of-descent. REAPER 51 | Tholozor VFA-136 (c.2007): https://www.digitalcombatsimulator.com/en/files/3305981/ Arleigh Burke Destroyer Pack (2020): https://www.digitalcombatsimulator.com/en/files/3313752/
Ramsay Posted June 8, 2020 Posted June 8, 2020 (edited) What are these? As you guess, (A) Fuel remaining at TACAN station (B) Distance from TACAN station where pilot should begin descent. With Waypoint "boxed" there are similar FPAS numbers for the selected waypoint. I don't understand the descent distance as it's incorrect for an optimum profile (Cruise Mach / 250KIAS) when descending to sea level and in DCS it counts down to 0 ? Source: Flight Manual, 2007, A1-F18AC-NFM-000, p97, 2.3.1.4 Edited June 8, 2020 by Ramsay i9 9900K @4.8GHz, 64GB DDR4, RTX4070 12GB, 1+2TB NVMe, 6+4TB HD, 4+1TB SSD, Winwing Orion 2 F-15EX Throttle + F-16EX Stick, TPR Pedals, TIR5, Win 11 Pro x64, Odyssey G93SC 5120X1440
Bankler Posted June 8, 2020 Author Posted June 8, 2020 (edited) (B) Distance from TACAN station where pilot should begin descent. ... I don't understand the descent distance as it's incorrect for an optimum profile (Cruise Mach / 250KIAS) when descending to sea level. Your suggestion seems correct. Question is, "Distance from TACAN station where pilot should begin descent"... to accomplish what? And by what kind of descent? When I started a 250 kts descent at the point the HSI suggested and maintained it, I passed over the TCN at around 8800 feet. Edited June 8, 2020 by Bankler Bankler's CASE 1 Recovery Trainer
Svend_Dellepude Posted June 8, 2020 Posted June 8, 2020 Just noticed these yesterday. Maybe there is some info on the FPAS page? [sIGPIC][/sIGPIC] Win10 64, Asus Maximus VIII Formula, i5 6600K, Geforce 980 GTX Ti, 32 GB Ram, Samsung EVO SSD.
Furiz Posted June 8, 2020 Posted June 8, 2020 Nice to know that, btw should we be able to use HSI page on both AMPCD and DDI at the same time? ( sry didnt want to srat whole new thread:P )
Bankler Posted June 8, 2020 Author Posted June 8, 2020 Just noticed these yesterday. Maybe there is some info on the FPAS page? "A" is the same number as the one under "FUEL REMAIN" under FPAS. So that one I believe we have figured out. "B" is still mysterious imho. Even GB wasn't sure and natops isn't too clear about it either. I think we might need some ED input here? Bankler's CASE 1 Recovery Trainer
sora_061 Posted June 8, 2020 Posted June 8, 2020 I maybe totally wrong but is 'B' the distance at which you begin descent to reach a point 10NM 3000ft from TACAN. Sent from my Redmi K20 Pro using Tapatalk
lobo Posted June 8, 2020 Posted June 8, 2020 I maybe totally wrong but is 'B' the distance at which you begin descent to reach a point 10NM 3000ft from TACAN. Sent from my Redmi K20 Pro using Tapatalk What kind of descent? What power setting? Rate of descent? Lobo's DCS A-10C Normal Checklist & Quick Reference Handbook current version 8D available here: http://www.digitalcombatsimulator.com/en/files/172905/
Tholozor Posted June 8, 2020 Posted June 8, 2020 I find that when the distance-to-go to begin descent reaches 0, the navigation point is almost exactly at 10° below the horizon, so I go to idle throttle and glide down. REAPER 51 | Tholozor VFA-136 (c.2007): https://www.digitalcombatsimulator.com/en/files/3305981/ Arleigh Burke Destroyer Pack (2020): https://www.digitalcombatsimulator.com/en/files/3313752/
Bankler Posted June 9, 2020 Author Posted June 9, 2020 ED? Provide some clarity maybe? :) Bankler's CASE 1 Recovery Trainer
Razor18 Posted June 10, 2020 Posted June 10, 2020 Probably this (about FPAS): 2.3.1.4 HSI with Waypoint or TACAN Steering Selected. If waypoint or TACAN steering is selected on the HSI display, the fuel remaining at arrival and the miles from the waypoint or TACAN station to begin descent are displayed on the HSI display. When FPAS cannot calculate fuel remaining and the point to begin descent, invalid Xs are displayed for these parameters. If TAS exceeds Mach 0.9, blanks are displayed. If fuel remaining at the waypoint or TACAN station is less than the TO XXXX LB legend, the WYPT number, the TO XXXX LB legend on the FPAS display and the fuel remaining on both the FPAS and HSI displays is flashed.
BarTzi Posted June 10, 2020 Posted June 10, 2020 (edited) ED? Provide some clarity maybe? :) It seems to be consistent with the following (still need to do more tests): The position in which you start a 10 degrees nose down descent, to fly over the TACAN at around 2,000 feet. Edit: My bad, not consistent at all... Edited June 10, 2020 by BarTzi
Raisuli Posted June 10, 2020 Posted June 10, 2020 You mean I don't have to do the standard 3xaltitude and manually calculate TOD anymore? That's a 3 degree rate of descent; I'd be shocked (SHOCKED, I tell you!) if the military did 10 degrees.
Razor18 Posted June 10, 2020 Posted June 10, 2020 Do not mix glide slope angle with a simple descent.
Bankler Posted June 10, 2020 Author Posted June 10, 2020 (edited) I still have no idea. It's not even linear. Tested with the supercarrier tacan. Alt Range Ratio 35k' 32.7nm ~1.07 30k' 27.5nm ~1.09 25k' 22.0nm ~1.13 20k' 16.8nm ~1.19 15k' 11.6nm ~1.29 10k' 6.3nm ~1.58 Also no idea why ED just can't tell us how it works instead of leaving us guessing here. Is it a secret? Or a WiP thing that was not meant to be shipped (which would be fine, and understandable)? Either way, just tell us? Edited June 10, 2020 by Bankler Bankler's CASE 1 Recovery Trainer
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