DimSim

Would like to hear any practical tips on hovering this aircraft or getting out of oscillation. When I hover, the craft often begins a slow roll oscillation. Most of my attempts to counter or ignore this result in increased frequency and eventual tip over. Adding forward movement, best by tilting engines, so no longer really hovering, but moving forward at low speed is the only way I've consistently managed to remain stable. As noted in another of my threads, I'm surprised how unstable this craft is in roll. It tend to want to roll always, even at high speed. But at high speed there is no oscillation. I do have a good joystick and have added some curve to assist with tiny stick inputs. I'm not very good yet with judging speeds and distances. So for example, landing on the ship, I come to stop and hover too early and too far from the ship. Naturally getting that right means very short hover time and less opportunity to oscillate.

On mission 5, a fuel truck drives too close to the medivac chopper taking its tail off, just after it landed. Sadly no crew members survived their rush from the burning vehicle. EDIT: Just restarted mission to repro. Didn't happen the 2nd time, however the truck does move very close to the chopper always as part of scripted sequence.

Spent some more time playing with this last night. Still not sure of any useful effect other than disengage auto pilot (AFC). The scenario is when AFC causes trim to be at extreme position, so when you take control the aircraft wants to pitch. Fighting against the trim is difficult and manually resetting trim is time consuming as it moves very slowly. There is a chance pressing emergency disconnect after getting to level flight may help reset trim. I'm not sure it does anything. Pressing Active Pause also helps AFC to reset. Other times it seems to reset at random.

I wish it did reset trim. As far as I can tell, 'Emergency SAAHS Disconnect ' does nothing more than flip the AFC off. It does not turn it back on upon release, reset trim or turn off any of the three stability controls. Test by turning on AFC + Alt Hold. Throttle down. Observe the trim pitching up as your air speed drops. Try disconnect SAAHS. Observe changes. Realized I made a spelling mistake in the thread title, but can't edit now after forum upgrade.

Yes, but what? Repeated mission twice. Followed waypoints, changed radio channels and pressed space on queue. I even made sure to overfly the way points precisely. I believe I kept appropriate speed and timings. Edit: Tried 3rd time. Ensured correct take off time, speed, altitudes, waypoints, radio comms. Same silence around WP 13. Anchored for 30min and then headed home, didn't trigger anything further. Hopefully more people will try the campaign and provide a clue.

When I play with your test1.miz file or modify it in editor (eg. change Player to Client) or other tests, I always get repro, aircraft on front of deck. Even deleting the ship and plane in your file and adding again. However if I make new test myself, it's always fine. Mission file attached. EDIT: Attached file currently does not have 'player' or 'client' set. Also getting some repros now. Will test more and report back. EDIT: I appear to have full repro as kirk7312 describes. I remember this user made mission (Gulf shenanigans.miz) https://www.digitalcombatsimulator.com/en/files/3309055/ Used to fail with the first bug, but still works now. av8_tarawa_test2.miz

Can't get Mission 2 to progress past comms at WP 11. Last communication is to switch radio to 'range', CH 4. After that, silence and no mission progress. I've anchored for 20mins with time accell, nothing. Attempted missions 2 twice, same both times. 1st time I decided to RTB and as I passed WP 15 (I think, at the coast), comms started as if I'd reached WP 12/13 to chat with earlier flight and then start JTAC comms.

No repro from me. Tried starting AV8 'on runway' on Tarawa. Appeared normal. Also tried user mission which had previous bug as you describe. Testing Persian Gulf, Beta 2.5.6.58125 (May be issue, just no repro from me. I care about this issue from last time.)

It's right there on the stick, but under what scenarios should one use the Emergency SAAHS Disconnect?

Thanks for responding Razbam. I've dumped fuel many times before, but recently returning to AV8 after time away. Question is, are there any steps beyond those in the guide?: 1) Set Bingo Fuel 2) Flip Left and Right switches to Dump The observe fuel reduce slowly until Bingo or 2600 limit. Old but still current method of dumping fuel Attaching .trk file with my attempt. av8_fuel_dump1.trk

Trying to dump some fuel at the moment. I flip the Left and Right switches to Dump and nothing happens. Have set lower Bingo Fuel and have the VTO menu open also to watch weight. Successfully jettisoned external fuel tanks. What am I missing? Beta 2.5.6.58125

Looking forward to this fix, flying night missions and I make use of this. Even better if the contrast can be calibrated well, I spend a lot of time turning the knobs trying to make it look good.

I'm new to F-16, so not sure if pilot error or what you describe. I've tried a soft and good looking landing which had my plane flip upside down and crash instantly on touching the ground. This has happened twice. I'd expect to bounce, swerve out of control etc. but this was an instant crash on what otherwise appeared to be reasonable landing.

Thanks for your comments, and thanks BigMotor, I'll have to try the Auto Flaps. I'm finding it, not so much difficult, but requiring constant vigilance, just to fly straight toward a waypoint with a trimmed and AFC enabled craft.

Returning to the Harrier after a long time, I can't believe, or remember how unstable this aircraft is with respect to roll. Even with the AFC on and Alt Hold, and well trimmed, the aircraft will roll and drift. The tiniest bump of stick will continue to roll in either direction, at least a little. I added a curve of 15 to my joystick to assist with finer control. For most aircraft with wings, tail and similar stabilizing features, once you have some speed, there is a wind vane effect which keeps the aircraft quite stable. This reminds me more of a beach ball! My questions are: 1) Has the flight model changed in the last year, increasing sensitivity or decreasing stability? 2) Am I missing some aircraft control or flight technique to maintain heading and eliminate roll? It's entirely possible I just forgot how the aircraft felt after flying fly-by-wire for most of the last year.

Just returning to the Harrier after a long stint in the Mirage. Not sure what experience I had, but was looking forward to trying this mission. I received warning from Tornado about the SAMs, so ordered wingman to Engage Air defenses. Heard acknowledgement, so radio was working, but never another word from him/them. Dive bombed the primary target and hit about 6 units at the HQ releasing my full payload. Also taking a missile hit from a nearby SAM, then fled home with my wounded bird. Skipped tanker refuel as I'm rubbish at it and didn't want to spend the time trying. Landed home and received a score but zero result as it I had not accomplished any mission objectives. So I had a bit of fun, but wasn't sure what I missed.

Okay, thank you for that information.

Sometimes after disengaging auto pilot, or suspending it, the autopilot leaves trim in an extreme position. This is the auto pilot, not me, I never touch trim itself as it's rarely necessary with fly-by-wire. When the auto pilot leaves trim in bad position, I have to push the stick almost full forward or backward to correct attitude and fly level until I adjust the trim. Is there a way to automatically center the trim?

Thank you! That's exactly what I was looking for, thought there was mention of recent changes.

Just returned to Harrier after about a year. Followed the guide and steps to perform CCRP bombing with some MK 82 bombs in the bombing training mission. I don't see the vertical guide line at all, so no weapon release. What could I be missing, or is there a bug in the current beta build? Switching to CCIP works fine. In Auto, I've got the ground target designated, TV mode, A/G, Fuse, Master Arm etc.

Same here. Happens all the time, AG or Nav modes. Display tracks one location but HUD jumps between two locations. That's what it looks like.

It can do either (check available, or just use). Depends on the API (DirectX 11, 12, OpenGL + Extensions, Vulkan). Some APIs or extensions expose available VRAM others don't. Often games just target a minimum or recommended spec, then allow the user to turn settings up or down if they experience issues. Windows PCs and GPU drivers (from intel, nVidia, AMD) are generally graceful about moving memory around best they can. VRAM can be consumed rapidly with very high resolution displays, high res textures or pre-loading lots of models and textures (called graphical resources). Both GPU and CPU can 'thrash' if they exceed usable RAM. Thrashing means rapidly and repeatedly moving memory to where it is needed because what is needed can't fit (typically in what is called a cache). When that happens, the user will see a sudden and significant performance decrease. Users should never have to worry about any of this, but a general appreciation of what's going on can help them isolate issues and make better guesses at what settings to change based on observed behavior. In general, more RAM (System or VRAM) is better, but it won't make things faster. Instead, having not enough will make things slower.

When the VRAM limit is exceeded, the GPU driver will move some resources from the GPU to CPU memory leaving enough VRAM for that frame. If there was not enough VRAM even for a single frame, it can swap memory between CPU and GPU memory multiple times per frame killing performance. While a GPU may have 12GB and CPU may have 32GB or such, no games or applications attempt to use all of that at the same moment, if they did, performance would be terrible, instead, resources move from disk to RAM to VRAM in ways that are hopefully intelligent and intentional. When unintentional, the operating system will move some resources around, but that tends to happen at undesirable times causing stutters and jerky frame rate. You'll hear the term 'paging' for that. Since you have one of the best video cards and systems money can buy, I expect you won't experience this much. If you do, turn some settings down. Some games, or game mods, do not prepare their texture resources well and can use excessive amounts of memory. So don't expect to run all games at max settings and resolutions even with the best hardware.

Consider the Harrier AV-8B and Mirage 2000C if you don't own them. Both are feature complete and fun to fly. Mirage has two excellent campaigns, one included with the aircraft.

You are suggesting either manually setting CPU core affinity, or disabling hyper threading. I'd suggest not doing either. While there is some chance of overclocking a single core to higher frequency in either case, you're more likely to hamper overall performance and make it erratic (mix of faster and slower). While this sim may be single thread heavy, there are still a lot of other activities going on in the background, including graphics driver, sound, input and OS. While these don't saturate cores, they still consume CPU time. Others may have different opinions, but mine is that overclocking in the present day is unlikely to give you significant gains, yet very likely to decrease your system stability. There were times in the past, where safe overclocks could gain 20% real performance. Best save your money and make upgrades to your GPU or CPU over time. Or enjoy what you have and upgrade your HOTAS etc.