LazyBoot Posted March 15, 2019 Posted March 15, 2019 (edited) Is the radar altimeter supposed to be inaccurate over water? It's showing 100ft too high. ____________________________ This is the same mission over land (7ft over sea level land...) Here you can see they all agree. Both screenshots taken in the built-in PG case 1 mission. Edited April 2, 2019 by IronMike
swither Posted March 15, 2019 Posted March 15, 2019 Feature :) It's inaccurate over water /Daniel Heatblur Simulations
LazyBoot Posted March 15, 2019 Author Posted March 15, 2019 Feature :) It's inaccurate over water Ok, that's nice to know, thanks.
VampireNZ Posted March 15, 2019 Posted March 15, 2019 Interesting...I have 1600 hours flying onboard a maritme aircraft where we used RADALT Hold over water at 250' prob 90% of the time. RADALT is perfectly accurate over water usually. What makes the F-14 special? Vampire
Flagrum Posted March 17, 2019 Posted March 17, 2019 fwiw, this behaviour is documented in NAVAIR 01-F14AAP-1, ch. 2.32.5
swither Posted March 17, 2019 Posted March 17, 2019 No idea, 60's design perhaps? But it's according to docs /Daniel Heatblur Simulations
Raven (Elysian Angel) Posted March 17, 2019 Posted March 17, 2019 If I remember correctly (it's been a while), Stephen Coonts also mentioned in his Jake Grafton books that the radar altimeter is inaccurate over water. Spoiler Ryzen 9 5900X | 64GB G.Skill TridentZ 3600 | Asus ProArt RTX 4080 Super | ASUS ROG Strix X570-E GAMING | Samsung 990Pro 2TB + 960Pro 1TB NMVe | VR: Varjo Aero Pro Flight Trainer Puma | VIRPIL MT-50CM2 grip on VPForce Rhino with Z-curve extension | Virpil CM3 throttle | Virpil CP2 + 3 | FSSB R3L | VPC Rotor TCS Plus base with SharKa-50 grip | Everything mounted on Monstertech MFC-1 | TPR rudder pedals OpenXR | PD 1.0 | 100% render resolution | DCS graphics settings
Flagrum Posted March 17, 2019 Posted March 17, 2019 Why the hell would that be? Different reflectivity for radar waves of water and ground?
Donut Posted March 18, 2019 Posted March 18, 2019 So it sounds like for carrier ops, setting the barometric pressure to the carrier and using the altimeter is the most accurate. i5 7600K @4.8GHz | 1080 Ti | 32GB 3200MHz | SSD | DCS SETTINGS | "COCKPIT"
Boagord Posted July 2, 2019 Posted July 2, 2019 Radar altimeter can read as much as 100 feet higher than actual altitude when operating over water. NAVAIR 01-F14AAP-1 : 2-173
GumidekCZ Posted November 15, 2021 Posted November 15, 2021 (edited) Hi @IronMike, Can I reopen this bug report with one simple question? Why the HB gave us aprox exact over water 100 feet error all the time in every mission, when NAVAIR 01-F14AAP is clear with words: CAN READ and AS MUCH AS. So assume the error could be everywhere between Zero and 100 feet. If this was for example wave height dependant ... than it must be connected with wind speed ( DCS sea wave condition is dependant on it.) Edited November 15, 2021 by GumidekCZ
Nealius Posted November 15, 2021 Posted November 15, 2021 With radar altimeters being so unreliable over water, why is it standard practice (or so I heard) to set radar altimeters for launches and traps?
falcon_120 Posted November 15, 2021 Posted November 15, 2021 1 minute ago, Nealius said: With radar altimeters being so unreliable over water, why is it standard practice (or so I heard) to set radar altimeters for launches and traps? I think we are talking specifically about F14 altimeter here right? As far as I know that is not the case on the Hornet. Am i right? If that is the case i guess is a tech limitation of that altimeter in particular...
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