Avatar Scorpion

Everything in connection with developing aircraft for FlightGear
User avatar
IAHM-COL
Posts: 6455
Joined: Sat Sep 12, 2015 3:43 pm
Location: Homey, NV (KXTA) - U.S.A
Contact:

Re: Avatar Scorpion

Postby IAHM-COL » Thu May 28, 2020 2:41 am

I'll test tomorrow. Thanks bomber
https://raw.githubusercontent.com/IAHM-COL/gpg-pubkey/master/pubkey.asc

R.M.S.
If we gave everybody in the World free software today, but we failed to teach them about the four freedoms, five years from now, would they still have it?

User avatar
IAHM-COL
Posts: 6455
Joined: Sat Sep 12, 2015 3:43 pm
Location: Homey, NV (KXTA) - U.S.A
Contact:

Re: Avatar Scorpion

Postby IAHM-COL » Fri May 29, 2020 3:55 pm

bomber wrote:update 3...

I think we're getting there now
Some very subtle changes... increased stability in normal flight at higher alts and speed through use of variable rotor rmp p damping.. no change for hover flight, so watch it.
A WEP of 120% increase in rotor rpm's...(e key toggle) I've not tested it and I think it needs some indication in the HUD doing.

You should now have a ceiling of +10kft at 100%, but you will need to manage your Capacitor levels through judicious step climbing...

Acceleration is starting to feel like the beast it should be.

https://drive.google.com/open?id=1bYy6s ... wfZCaV8xDP

Simon


wow.
This is a serious update. Kinda version bump?
:D

I'll fly it out later [today] and report, for now:

https://github.com/FGMEMBERS-NONGPL/AH- ... 4b06505132
https://raw.githubusercontent.com/IAHM-COL/gpg-pubkey/master/pubkey.asc

R.M.S.
If we gave everybody in the World free software today, but we failed to teach them about the four freedoms, five years from now, would they still have it?

User avatar
IAHM-COL
Posts: 6455
Joined: Sat Sep 12, 2015 3:43 pm
Location: Homey, NV (KXTA) - U.S.A
Contact:

Re: Avatar Scorpion

Postby IAHM-COL » Fri May 29, 2020 7:47 pm

IAHM-COL wrote:I'll fly it out later [today] and report



Oh No!
I am back to this

Code: Select all

Error: caught signal 11:
  /lib64/libc.so.6 : ()+0x395a0
  fgfs : JSBSim::FGTrim::trimOnGround()+0x973
  fgfs : JSBSim::FGTrim::DoTrim()+0x17ac
  fgfs : FGJSBsim::do_trim()+0x4b
  fgfs : FGJSBsim::init()+0x4b4
  fgfs : FDMShell::update(double)+0x3e8
  fgfs : SGSubsystemGroup::Member::update(double)+0x7a
  fgfs : SGSubsystemGroup::update(double)+0x391
  fgfs : SGSubsystemMgr::update(double)+0x33
  fgfs() [0x10d2a0b]
  fgfs : fgOSMainLoop()+0x79
  fgfs : fgMainInit(int, char**)+0x1c57
  fgfs : main()+0x11b
  /lib64/libc.so.6 : __libc_start_main()+0xea
  fgfs : _start()+0x2a
https://raw.githubusercontent.com/IAHM-COL/gpg-pubkey/master/pubkey.asc

R.M.S.
If we gave everybody in the World free software today, but we failed to teach them about the four freedoms, five years from now, would they still have it?

bomber
Posts: 1379
Joined: Mon Nov 30, 2015 3:40 pm

Re: Avatar Scorpion

Postby bomber » Fri May 29, 2020 7:57 pm

Will give it some thought
"If anyone ever tells you anything about an aeroplane which is so bloody complicated you can't understand it, take it from me - it's all balls" - R J Mitchell

User avatar
IAHM-COL
Posts: 6455
Joined: Sat Sep 12, 2015 3:43 pm
Location: Homey, NV (KXTA) - U.S.A
Contact:

Re: Avatar Scorpion

Postby IAHM-COL » Fri May 29, 2020 10:28 pm

bomber wrote:Will give it some thought


Cool
If this can guide your thinking (cause it certainly makes no sense to me)

https://github.com/FGMEMBERS-NONGPL/AH- ... 8f6d0899ec

That single change of -1.28 to 1.28 (no sign) on line 144 of Engines/rotor_fan.xml is all I needed to go from Segfault everytime to No Segfault everytime.

While you figure out
1. If it matters
2. Why

I fly this beast a bit more
https://raw.githubusercontent.com/IAHM-COL/gpg-pubkey/master/pubkey.asc

R.M.S.
If we gave everybody in the World free software today, but we failed to teach them about the four freedoms, five years from now, would they still have it?

User avatar
IAHM-COL
Posts: 6455
Joined: Sat Sep 12, 2015 3:43 pm
Location: Homey, NV (KXTA) - U.S.A
Contact:

Re: Avatar Scorpion

Postby IAHM-COL » Fri May 29, 2020 11:17 pm

@Bomber

With the new changes it totally made a ceiling of 10Kft.

Great job.
I can pass to hover mode before landing, and taxi it by hovering to a parking. Using <i> and <o> to make the hover taxiing very possible.
Its actually a lot of fun to fly this.

(and I am a really bad helicopter pilot, to be kind with me)


And to be a pain the anatomy: With the new settings the problem is to bring her down. I kind of struggled a bit on San Sebastian to make her descend to the airport. But as you see, totally doable. Maybe just bad pilot?!


Best,
IH

http://www.jafva.com/flight/1222/
https://raw.githubusercontent.com/IAHM-COL/gpg-pubkey/master/pubkey.asc

R.M.S.
If we gave everybody in the World free software today, but we failed to teach them about the four freedoms, five years from now, would they still have it?

User avatar
IAHM-COL
Posts: 6455
Joined: Sat Sep 12, 2015 3:43 pm
Location: Homey, NV (KXTA) - U.S.A
Contact:

Re: Avatar Scorpion

Postby IAHM-COL » Sat May 30, 2020 12:13 am

With the new config mountain hoping is TOTALLY possible

See this example
http://www.jafva.com/flight/1223/

Check on my elevation profile in contrast with the terrain.

Image

I think you've made a very capable helicopter for FG.

JSBsim FTW
https://raw.githubusercontent.com/IAHM-COL/gpg-pubkey/master/pubkey.asc

R.M.S.
If we gave everybody in the World free software today, but we failed to teach them about the four freedoms, five years from now, would they still have it?

bomber
Posts: 1379
Joined: Mon Nov 30, 2015 3:40 pm

Re: Avatar Scorpion

Postby bomber » Sat May 30, 2020 7:32 am

Thanks for saying so....

I watched a film that had a blackhawk in it last evening and as always seeing it, it got me thinking so I did some reading late on.

I'd installed a 'stabilator' on this Scorpion without knowing they actually existed but thinking that it'd be a good idea for longtitudinal control at high speeds. What I didn't appreciate and now do after reading about why the blackhawk has one that it's primary function is in the hover, which I don't think I've taken into account. To do this it must be using the ground effect, as in a hover there should be little to no dynamic pressure for the stabilator to use without using the ground effect. I need therefor to read up on the air direction and speed during ground effect and implement this into the stabilators dynamic pressure and AoA calcs...

I thought I'd finished but the pursuit of accuracy is never ending.

regards

Simon
"If anyone ever tells you anything about an aeroplane which is so bloody complicated you can't understand it, take it from me - it's all balls" - R J Mitchell

bomber
Posts: 1379
Joined: Mon Nov 30, 2015 3:40 pm

Re: Avatar Scorpion

Postby bomber » Sat May 30, 2020 7:44 am

IAHM-COL wrote:

That single change of -1.28 to 1.28 (no sign) on line 144 of Engines/rotor_fan.xml is all I needed to go from Segfault everytime to No Segfault everytime.

I fly this beast a bit more


Oh WTG you've solved the problem !
I've duplicated your change here and it does the same thing... this means you're running the same rotor file that allows for autorotation...
"If anyone ever tells you anything about an aeroplane which is so bloody complicated you can't understand it, take it from me - it's all balls" - R J Mitchell

User avatar
IAHM-COL
Posts: 6455
Joined: Sat Sep 12, 2015 3:43 pm
Location: Homey, NV (KXTA) - U.S.A
Contact:

Re: Avatar Scorpion

Postby IAHM-COL » Sat May 30, 2020 12:55 pm

bomber wrote:I've duplicated your change here and it does the same thing... this means you're running the same rotor file that allows for autorotation...

That real neat.
Confession: I have no clue why that negative sign is calling a total segfault on JSbim.
But if it works, I leave it explaining to you.

Best,
IH
https://raw.githubusercontent.com/IAHM-COL/gpg-pubkey/master/pubkey.asc

R.M.S.
If we gave everybody in the World free software today, but we failed to teach them about the four freedoms, five years from now, would they still have it?


Return to “Aircraft Development”

Who is online

Users browsing this forum: No registered users and 10 guests