Tiger-II Posted May 24, 2024 Posted May 24, 2024 Hi, Ran out of fuel earlier (deliberate...honest!). Engines shutdown (fine), and appeared to be windmilling around 60% or so, yet lost engine gens and hydraulics almost immediately. Aircraft nosed-down, and only when passing around 18000 ft, something happened and the gens and hydraulics restored (again, simultaneously). For a moment I could control the jet, but then speed decayed, and I lost everything again. Aircraft crashed. Everything I've read says the F-4 can glide and remain controllable. If this is a legit bug, I'll put it in the bug section. 1 Motorola 68000 | 1 Mb | Debug port "When performing a forced landing, fly the aircraft as far into the crash as possible." - Bob Hoover. The JF-17 is not better than the F-16; it's different. It's how you fly that counts. "An average aircraft with a skilled pilot, will out-perform the superior aircraft with an average pilot."
Zabuzard Posted May 27, 2024 Posted May 27, 2024 Depends greatly on the F-4 variant. Our E has no RAT and its hydraulic backup requires electric power to function. So with a total engine failure, your power will go down, the hydraulic backup deactivates and you can not control the bird anymore.
=475FG= Dawger Posted May 27, 2024 Posted May 27, 2024 Flight controls go away below 54% engine RPM (approximately) from brief testing.
Kalasnkova74 Posted May 27, 2024 Posted May 27, 2024 On 5/23/2024 at 10:35 PM, Tiger-II said: Hi, Ran out of fuel earlier (deliberate...honest!). Engines shutdown (fine), and appeared to be windmilling around 60% or so, yet lost engine gens and hydraulics almost immediately. Aircraft nosed-down, and only when passing around 18000 ft, something happened and the gens and hydraulics restored (again, simultaneously). For a moment I could control the jet, but then speed decayed, and I lost everything again. Aircraft crashed. Everything I've read says the F-4 can glide and remain controllable. If this is a legit bug, I'll put it in the bug section. Sounds like you “windmilled” the motors. The generators run off of engine rotation. Ideally, that’s provided by a running J-79. If your engines flames out or compressor stalled, diving fast enough will create enough airflow to spin the compressors (the aerial equivalent of push-starting a manual transmission car). Thus, running the generators and enabling engine re-start in flight. In your case, with no fuel your only option was a controlled ejection.
Super Grover Posted May 27, 2024 Posted May 27, 2024 54% seems a bit high. This can be a bug. Thank you for reporting it. I'll look into this. Also, the hydraulics modelling for the control surfaces is not final and will receive more details. 2 Krzysztof Sobczak Heatblur Simulations https://www.facebook.com/heatblur/
Super Grover Posted May 30, 2024 Posted May 30, 2024 I might have indirectly and unintentionally connected the control surfaces to one of the AC buses. Whoopsie. I'm cutting the wires, and it should be fixed in the next update. 4 2 Krzysztof Sobczak Heatblur Simulations https://www.facebook.com/heatblur/
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