JCTherik Posted October 12, 2022 Posted October 12, 2022 Is the fuel flow not supposed to account for afterburner? (F14-B, not tested in A)
Naquaii Posted October 12, 2022 Posted October 12, 2022 33 minutes ago, JCTherik said: Is the fuel flow not supposed to account for afterburner? (F14-B, not tested in A) Nope, fuel flow does not show afterburner fuel flow and that’s correct. 2
303_Vins Posted October 13, 2022 Posted October 13, 2022 https://drive.google.com/file/d/1Vemzu19L4uYhwM6JRXqrm7x_daaJ9P-C/view?usp=sharing Use this 1 1
RustBelt Posted October 13, 2022 Posted October 13, 2022 On 10/12/2022 at 7:51 AM, JCTherik said: Is the fuel flow not supposed to account for afterburner? (F14-B, not tested in A) To explain why, the instruments for the engine are concerned with the health and behavior of the Turbine engine itself. Afterburner is an external process to the engine operating parameters. You’re not using Fuel Flow to gauge endurance, it’s there to tell you the spinney bits of the engine are working as expected and you don’t want Afterburner hiding that. 2
draconus Posted October 14, 2022 Posted October 14, 2022 11 hours ago, RustBelt said: To explain why, the instruments for the engine are concerned with the health and behavior of the Turbine engine itself. Afterburner is an external process to the engine operating parameters. You’re not using Fuel Flow to gauge endurance, it’s there to tell you the spinney bits of the engine are working as expected and you don’t want Afterburner hiding that. Yet the F-15 does show AB ff. It's the manufacturer decision. 1 Win10 i7-10700KF 32GB RTX4070S Quest 3 T16000M VPC CDT-VMAX TFRP FC3 F-14A/B F-15E CA SC NTTR PG Syria
Cab Posted October 14, 2022 Posted October 14, 2022 (edited) 42 minutes ago, draconus said: Yet the F-15 does show AB ff. It's the manufacturer decision. The Hornet does, too And the F-16 Edited October 14, 2022 by Cab 1
Tomcatter87 Posted October 14, 2022 Posted October 14, 2022 Wow, I always wondered about that, too. So is there no way to actually see how much fuel is being consumed at the moment if a/b is engaged? "Once you have tasted flight, you will forever walk the earth with your eyes turned skyward. For there you have been, and there you will always long to return." Check out my DCS content on Instagram
Golo Posted October 14, 2022 Posted October 14, 2022 There actually is, its called fuel quantity indicator. If you are in full burner you can see fuel quantity dropping by hundred pounds every couple of seconds, so no need for a/b ff indicator note: Ive actually looked up SFC at max thrust of both TF-30 and F110 and they both use about 16 lbs/s per engine. So you are about 100lbs of fuel lighter every 3s on full burner. 3
RustBelt Posted October 14, 2022 Posted October 14, 2022 7 hours ago, draconus said: Yet the F-15 does show AB ff. It's the manufacturer decision. Thats more a TF30 thing since it was originally designed for the Missiler then had After burner added in after that project was shut down. As well as 20 years of engine tech development between the TF30 and the F-110. Why the B and D work that way? Probably commonality with the A. 7 hours ago, Cab said: The Hornet does, too And the F-16 All three designed around engines 20 years newer than the TF30.
Cab Posted October 14, 2022 Posted October 14, 2022 3 hours ago, RustBelt said:A. All three designed around engines 20 years newer than the TF30. True, but I don’t understand the significance of that here.
RustBelt Posted October 15, 2022 Posted October 15, 2022 Because the FF not showing burner in the B was a holdover from the 20 year older TF30 in the A which was both less reliable, and originally not made with an afterburner. More modern engines took care of more of their own health and wellbeing. Especially when designed with an afterburner in the first place.
Cab Posted October 15, 2022 Posted October 15, 2022 28 minutes ago, RustBelt said: Because the FF not showing burner in the B was a holdover from the 20 year older TF30 in the A which was both less reliable, and originally not made with an afterburner. More modern engines took care of more of their own health and wellbeing. Especially when designed with an afterburner in the first place. So your explanation above about being “concerned with the health and behavior” was specific to the TF30. Got it now.
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