Auto Hover and the bump?

[sobe]

I have finally begun to control the BS on takeoff to the point that even the virtual pilots are no longer afraid to fly with me. Now when I take off I slow down to 0 speed and above 4m in height, trim and then trim again. I then put the auto hover on and get what I think this forum refers to as the bump. BS with turn up and then to the side and then start spinning. It has gotten to the point that I have given up using the auto hover.

What am I doing wrong? I am using the new trim feature use NONFF CH products.:helpsmilie:

Thanks

[CAT_101st]

First use the old trim, works better. Keep in mind that the auto pilots can only aplly so much force to your control system. So if your rudder peddals are off just a little the AP cant keep up. so further trimming is nedded to corect the problem. I will trim 3 -6 time wile in auto hover to acheav the 0 movment. Make sure you are returning your controls back to cinter after hitting the trimmer button.

[Speed_2]

If your autohover starts making the aircraft go crazy, immediately look to the autopilot buttons. They will probably be flashing, you need to reengage them. To avoid flashing autopilot channels, do this:

 

1) When you get the low rotor speed warning, HEED IT and reduce collective

 

2) Do not engage autohover immediately after taking off! You have to WAIT until you get the airspeed indicator on the HUD before it will work! If you engage autohover before the airspeed indicator has appeared, it will disable your autopilot channels and your aircraft will go crazy.

 

3) Do not use autohover at very low altitude (you already mentioned this I see)

[Waldo_II]

2) Do not engage autohover immediately after taking off! You have to WAIT until you get the airspeed indicator on the HUD before it will work! If you engage autohover before the airspeed indicator has appeared, it will disable your autopilot channels and your aircraft will go crazy.

 

 

The airspeed indicator works all the time, unless the instruments are shot off in combat. You are likely thinking of the groundspeed indicator, which seems to work only when it wants to. During a hover, your airspeed could easily be anything but zero if there is wind. If you use the airspeed indicator to get into a hover, you'll doing a lot of drifting.

[sobe]

I am getting a little confused on the speed indicator issues. Where are the two indicators located (air and ground) and which one is important for the auto hover?

[159th_Viper]

Post a track illustrating your difficulty. Much easier to diagnose/troubleshoot issues :)

[Dr_Watson]

I have been using AH a lot online and it works a dream

 

- Slow to a hover

- Trim the controls to centre (do not trim to keep the aircraft perfectly stable!)

- Disengage the FD

- Hold her steady as there will be a little added instability as the FD is off

- When steady, hit autohover.

 

Seems to work everytime. The above sequence doesn't take long, perhaps 10 seconds at most.

Edited September 7, 2009 by Dr_Watson

[Speed_2]

The airspeed indicator works all the time, unless the instruments are shot off in combat. You are likely thinking of the groundspeed indicator, which seems to work only when it wants to. During a hover, your airspeed could easily be anything but zero if there is wind. If you use the airspeed indicator to get into a hover, you'll doing a lot of drifting.

 

I've tested it many times. If you try to engage autohover before the whatever speed indicator appears on the HUD, it will disengage the autopilot channels. Try it yourself if you don't believe me. I believe this has even been mentioned on these forums before, something about "Doppler Nav Sys", whatever that is.

[Waldo_II]

I've tested it many times. If you try to engage autohover before the whatever speed indicator appears on the HUD, it will disengage the autopilot channels. Try it yourself if you don't believe me. I believe this has even been mentioned on these forums before, something about "Doppler Nav Sys", whatever that is.

 

 

Oh no, I believe you, it is just the the incorrect terminology can lead to misunderstanding and confusion.

 

 

I am getting a little confused on the speed indicator issues. Where are the two indicators located (air and ground) and which one is important for the auto hover?

You airspeed is indicated on the top left corner of the Shkval display, and in one of the dials in the left cluster of instruments, next to the attitude indicator (artificial horizon), the G-force meter, radar altimeter, and barometric altimeter. When trying to position yourself in a hover, ignore airspeed.

 

The groundspeed indicator can only be found on the HUD, in the top left. This is the speed that you must pay attention to when positioning yourself in a hover. In addition to having the digital readout, when you are <50kph, you will get a vector line on your HUD that represents your groundspeed velocity. When it points to the right, you are moving straight to the right. When it points up, you are moving forward, and vice versa. To get yourself into a hover, you must make that line as small as possible, obtaining as little groundspeed as you can. Once you are at ~5kph groundspeed, bring the nose of the helicopter to the horizon or just above it, trim, and engage autohover.

[sobek]

Also, do not only take the hud as reference, because it will make your control inputs hunt after the chopper, rather try to focus primarily on the ground, because that gives you an indication of speed, acceleration (to some degree), attitude and altitude all at once.

[EinsteinEP]

I believe this has even been mentioned on these forums before, something about "Doppler Nav Sys", whatever that is.

The Doppler nav system uses the Doppler effect to accurately measure the helicopters velocity with respect to the ground. I assume it uses a laser (aka laser velocimeter), but don't know for sure. This input, instead of airspeed, is used by the autopilot to establish a hover over the ground.

 

The Doppler nav system takes some time (~3 minutes? any body timed it?) to warm up after you flip on the K-041 and Nav switches. Tip: turn on ground power and turn these systems on before you start the engines, so it'll at least be half warmed up before you're ready to take off. Also, as mentioned earlier, check for that ground speed indication before activating ground hover or the autopilot will shut off the respective channels.

[Itkovian]

I once banged up that system firing at the shooting range... was focusing on HMS target practice when I realized I was hurtling towards the ground (though not in vortex). Pulled the collective just in time to minimize the impact and gain altitude.... and then the autopilot was going haywire and I had to switch on the Flight Director, and sure enough EKRON showed that very error.

 

It was rather embarrassing, but a great demonstration of the depth of this sim. :)

 

Itkovian

[Pogo]

I've also noticed that any altitude below 4 meters will send the Auto Hover system into convulsions AND turn off all of the Autopilot channels.

 

Cheers,

Pogo

[GGTharos]

More appropriately, it will turn off your AP channels, which will send your AH system into convulsions :)

[159th_Viper]

......which will send your AH system into convulsions :)

 

Sort of like Whispering in your Girlfriend's ear that her Sister is Prettier and then attempting to hang On.........:D

[GGTharos]

Sort of like Whispering in your Girlfriend's ear that her Sister is Prettier and then attempting to hang On.........:D

 

 

... to both of them :D

[muamshai]

you can always use keyboard arrow keys for fine trimming. I am not sure if it still works in new patch as I was too busy with real life to apply this new patch..