Westland Lynx. FGUK edition

28 Feb 2012 20:03 - 27 Oct 2012 16:47 #432 by StuartC
DOWNLOAD:-

Release Date:- 28/02/2012

Lynx V0.4

Release Notes:-
Removes the annoying FG version warning in FG 2.6
Fixed a bug in the sound in FG 2.6



V0.3

Found there was an updated version of the base lynx so I h

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27 Oct 2012 16:47 #4375 by StuartC
Vo.5 now available

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14 Feb 2013 14:13 #7113 by Vodoun da Vinci
V0.6 now available. I fixed the .amb on all the instruments and all models in the folder.

www.fguk.eu/fguk-hangar/rotarywing/viewd...ing/20-westland-lynx

VooDoo

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14 Feb 2013 14:19 #7115 by StuartC
And just how did you find time to do that when yer supposed to be flying cross country?????

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14 Feb 2013 14:56 #7117 by Vodoun da Vinci
I don't leave until 4:45 this afternoon.... :P

But then I have to work all weekend and come home Sunday. :pinch: :(

VooDoo

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14 Feb 2014 12:13 - 23 Dec 2014 17:49 #13756 by StuartC
Lynx is back in the hanger and updated:-

www.fgukmedia.co.uk/index.php/hangar/vie...ng/261-westland-lynx

V0.7 FGUK

Dased on an early version of Gerard Robins Lynx release under "CREATIVE COMMON BY-NC-SA Copyright".

3 versions of the Lynx:-

WG-13

AH-7

MK-9

All now Rembrandt ready.

Nave lights and beacons fitted.

Seating fitted in the rear cabin.

Slight FDM tweaks to allow it to carry out the aerobatics of the real one.

Livery selection available on all 3.

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23 Dec 2014 17:59 #19889 by StuartC
V1.0 FGUK now available.


www.fguk.eu/index.php/hangar/viewdownloa...ng/261-westland-lynx



V1.0 FGUK

All new cockpits in all 3 versions.

New sound pack with Mp sound support.

All 3 FDM's updated to run " Yasim Current Version " for FG 3.2+

New Pilots fitted.

Additional views.

Advanced lighting kit fitted - Landing lights and beacons are turned off from the switches on the main panel.








Attachments:

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11 Sep 2015 12:09 #25549 by Warty
Quick air test in the Lynx after modifications to the AFCS (Automatic Flight Control System). It's getting more stable/controllable in the hover now. Not perfect, of course, but probably close enough for government work :cheer:


Mac 10.14.1 Mojave, FG 2018.3.5
The following user(s) said Thank You: StuartC

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11 Sep 2015 12:41 #25550 by StuartC
but the lynx has always been stable in a hover ??

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11 Sep 2015 13:09 #25552 by geed
Could you put it up somewhere? I wanna test the added stability.

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11 Sep 2015 13:42 - 11 Sep 2015 13:45 #25555 by Warty

StuartC wrote: but the lynx has always been stable in a hover ??

You should bear in mind that not everyone is as good as you :) Especially, if they only have a mouse. Personally, I can't get the off-the-shelf version to do this:

i.e.: over 7 minutes within +/- 1 foot (which is outsde my natural abilities). I only put it down then because I was bored.

geed wrote: Could you put it up somewhere? I wanna test the added stability.

It's not self-contained because it calls up stuff from various of my FG files/folders. It uses stuff that is common to many of my aircraft types. I'll try to put them together in one folder some time and put it on dropbox.

Mac 10.14.1 Mojave, FG 2018.3.5
The following user(s) said Thank You: StuartC, geed, J Maverick 16

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11 Sep 2015 15:28 - 27 Jul 2016 13:46 #25561 by Warty
Geed: OK, I've got what I think is enough together and what's in this folder might just work, if you're lucky. No promises mind :cheer: Maybe the quickest way to tell is for you to run it up and report any error messages for missing files.

Here are some hints:

a = enable/disable ALTITUDE damping.
y = enable/disable YAW damping.
u = enable/disable SPEED damping.
All these enable at zero, so double-tapping one is often the quickest way to get to zero.
For example: shortly after lift-off, double-tapping the 'a' key at about 15 ft will produce a reasonable hover.

Note: neither YAW or SPEED damping will prevent change of direction/speed. It just makes it more difficult.
However, with ALTITUDE damping ON, it's pretty much impossible to change height (short of turning the engine off, I suppose).
With ONLY ALTITUDE damping ON, you can just change speed and direction via the stick or mouse.

Provided a function is enabled above:
4/6 = left/right target yaw-rate adjust
9/3 = increase/decrease target speed
8/2 = increase/decrease climb rate
,/. = yaw rate 10 deg/sec left or right (ONLY whlilst pressed)

Shortcuts:
Home = Lift off (4 ft/sec up, 0 kts)
PageUp = Climb out (10 ft/sec up, 60 kts)
PageDown = Approach (20 ft/sec down, 30 kts)
End = Land (2 ft/sec down, 0 kts)

There's probably more, but that's all I can think of right now.

EDIT: if it works properly, you should see something like this on start up:

Mac 10.14.1 Mojave, FG 2018.3.5

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11 Sep 2015 17:41 #25564 by J Maverick 16
Will try it too, since I'm not good at flying helis...
Mav

Breakin' the sound barrier every day!
Oh God, that's EGOD!

FG 2020.1.1 - iMac 27" (Mid 2010) w/ macOS 10.12.6 - Thrustmaster FCS Flight Pack + MFD Cougar

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11 Sep 2015 20:07 #25569 by sanni
Has this helicopter really such a system???
What about modelling an aircraft and his behaviour as real as possible?
Real pilots need a little bit time to fly stable in a hover. Why not in FlightGear?

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12 Sep 2015 09:41 #25573 by Warty

sanni wrote: Has this helicopter really such a system???

If you look down at the centre console, you will see these aircrew controls/indicators


I worked on the Lynx during the 80s, so a lot of my on-board RAM will have been over-written since then. What follows is purely off the top of my head, and I'm not claiming it's 100% accurate:

The most important reason for the existence of the AFCS on the Lynx was that it could not be flown manually. Its rigid, solid-titanium rotor-head made it very manoeuvrable - but also extremely unstable. It had 3 massive dual-channel hydraulic jacks to twist the rotors as required. Each of these jacks had twin-channel electrical servos, to which the AFCS computer had access.

From memory only, I think it was limited to 10% authority at that time. So the pilot could overrule it if necessary and it also meant that the AFCS couldn't do anything really extreme. The main sensory inputs came from rate gyros in the rear avionics bays. Again two for each channel. Can't remember exactly where the altitude inputs came from but looking at the controller it would appear to have access to both barometric and radar altitude.

sanni wrote: What about modelling an aircraft and his behaviour as real as possible?

It's only in the early development stage - be patient :)

sanni wrote: Real pilots need a little bit time to fly stable in a hover. Why not in FlightGear?

None of the real pilots I worked with ever asked me to disconnect the AFCS to make their life more of a challenge. I suppose one advantage of a sim is that you can do things without risking losing your licence. Just turn it off (shift-P, for the panel then 'h' 3 times to ged rid of the HUD). Or you could also treat this like the trainer-wheels on a bike.

Anyway, I'm not trying to sell this idea to you ;) GEED asked me for a copy of something I'd done for my own use, is all.

Mac 10.14.1 Mojave, FG 2018.3.5

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12 Sep 2015 10:18 #25574 by geed
Exactly :) Thanks for that Warty - maybe I get time today before we get into the air to test it...

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12 Sep 2015 10:24 - 12 Sep 2015 10:32 #25575 by geed
From last time I talked to our helicopter crews I remember us talking about the AFCS. It is also equipped in our german Lynx.

Our pilots train flying the Lynx with and without the AFCS. They do takeoffs and landings at different weather scenarios on land and sea including procedures for sea vessels.

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12 Sep 2015 10:57 - 12 Sep 2015 10:59 #25577 by Warty
I think our Navy Lynx had a better hover-control than the Army ones. Good video here - auto-hover won't solve all your problems!


We only used to turn off the axes one channel at a time for fault diagnosis in the air. By watching the needles (especially in steep manoeuvres) you could normally isolate a fault that way.

13 years ago the Super Lynx 300 had taken the AFCS much further than in my day (see this Flight article )

"With the aircraft trimmed out and controls released, the helicopter stayed more or less over the spot. Auto-hover will be available."

Mac 10.14.1 Mojave, FG 2018.3.5

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12 Sep 2015 12:04 #25578 by StuartC
seasick just watching that one...........

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13 Sep 2015 09:02 - 13 Sep 2015 09:06 #25588 by sanni
I will try it out -- and be patient . . . . :cheer:

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