Board index FlightGear Development Aircraft

Cessna 210 "Centurion" family development topic

Questions and discussion about creating aircraft. Flight dynamics, 3d models, cockpits, systems, animation, textures.

Re: Cessna 210 "Centurion" family development topic

Postby wkitty42 » Tue Sep 21, 2021 10:52 pm

S&J wrote in Tue Sep 21, 2021 9:48 am:
TheEagle wrote in Mon Sep 20, 2021 11:22 pm:Maybe, if you tell me what an FTH is ? :wink:

It's the alt to which the turbocharger is able to generate it's maximum manifold pressure, after which MP drops off with increased alt.

FTH is the abbreviation for all that? ;)
"You get more air close to the ground," said Angalo. "I read that in a book. You get lots of air low down, and not much when you go up."
"Why not?" said Gurder.
"Dunno. It's frightened of heights, I guess."
User avatar
wkitty42
 
Posts: 9148
Joined: Fri Feb 20, 2015 4:46 pm
Location: central NC, USA
Callsign: wk42
Version: git next
OS: Kubuntu 20.04

Re: Cessna 210 "Centurion" family development topic

Postby TheEagle » Sat Sep 25, 2021 11:17 pm

Progress update: Ysop has made a quite good FDM with OpenVSP :D and I have worked hard in the meantime to … simulate a realistic gear retraction ! (Okay, I admit, the wheel well isn't modelled yet :roll: , but this will follow soon)
Cessna 210 (Wiki)
My other aircraft: my wiki profile !
Other: FGTools (GitHub)
World tour: View on SkyVector
Please consider donating $1 / €1 to help me finance a new camera !
User avatar
TheEagle
 
Posts: 3414
Joined: Sat May 01, 2021 3:27 pm
Location: France
Pronouns: You, he
Callsign: F-EAGLE
IRC name: none
Version: Git next
OS: Ubuntu Studio 22.04

Re: Cessna 210 "Centurion" family development topic

Postby benih » Tue Sep 28, 2021 8:21 am

Hi Eagle,
I did a quick check at the POH; and the fuel system looks very similar to the 182s one, so this might be an option to be ported.
User avatar
benih
 
Posts: 1689
Joined: Tue Aug 15, 2017 10:34 am
Callsign: D-EBHX
Version: next
OS: Debian Linux 64bit

Re: Cessna 210 "Centurion" family development topic

Postby TheEagle » Tue Sep 28, 2021 11:02 am

benih wrote in Tue Sep 28, 2021 8:21 am:the fuel system looks very similar to the 182s one, so this might be an option to be ported.

What exactly do you mean with fuel system ? Surely more than the fuel tanks ? :?
Cessna 210 (Wiki)
My other aircraft: my wiki profile !
Other: FGTools (GitHub)
World tour: View on SkyVector
Please consider donating $1 / €1 to help me finance a new camera !
User avatar
TheEagle
 
Posts: 3414
Joined: Sat May 01, 2021 3:27 pm
Location: France
Pronouns: You, he
Callsign: F-EAGLE
IRC name: none
Version: Git next
OS: Ubuntu Studio 22.04

Re: Cessna 210 "Centurion" family development topic

Postby D-ECHO » Tue Sep 28, 2021 11:04 am

The fuel system basically controls how the fuel comes from the tanks to the engine, it usually includes the "fuel pipes", fuel valves, possibly manifold tanks etc. Putting it simply, the fuel system calculates how much fuel to substract from the tanks and from which ones depending on the cockpit controls.
D-ECHO
 
Posts: 2460
Joined: Sat May 09, 2015 1:31 pm
Pronouns: Bea (she/her)
Version: next


Re: Cessna 210 "Centurion" family development topic

Postby TheEagle » Tue Sep 28, 2021 1:42 pm

Ah … I guess this will be the solution for the problem that the engine only consumes fuel from the left tank and there is no way to make it take the fuel from the right tank ?
Cessna 210 (Wiki)
My other aircraft: my wiki profile !
Other: FGTools (GitHub)
World tour: View on SkyVector
Please consider donating $1 / €1 to help me finance a new camera !
User avatar
TheEagle
 
Posts: 3414
Joined: Sat May 01, 2021 3:27 pm
Location: France
Pronouns: You, he
Callsign: F-EAGLE
IRC name: none
Version: Git next
OS: Ubuntu Studio 22.04

Re: Cessna 210 "Centurion" family development topic

Postby benih » Tue Sep 28, 2021 3:05 pm

Yes, and in a realistic way (including the fuel injection part which affects priming).
The thing I didn't found out yet is if the tanks are gravity driven, but the diagram suggested this.
User avatar
benih
 
Posts: 1689
Joined: Tue Aug 15, 2017 10:34 am
Callsign: D-EBHX
Version: next
OS: Debian Linux 64bit

Re: Cessna 210 "Centurion" family development topic

Postby S&J » Tue Sep 28, 2021 4:28 pm

The fuel tanks although gravity fed will no doubt be dynamically pressurised via the starboard fuel tank resulting in this tank draining slightly quicker than the port tank.

There'll also be a booster pump for low dynamic pressure situations, at take off and 'go around'.
"Stay away from negative people.They have a problem for every solution." - Albert Einstein
S&J
 
Posts: 794
Joined: Wed Aug 26, 2020 7:31 pm

Re: Cessna 210 "Centurion" family development topic

Postby dany93 » Tue Sep 28, 2021 4:54 pm

TheEagle wrote in Tue Sep 28, 2021 1:42 pm:Ah … I guess this will be the solution for the problem that the engine only consumes fuel from the left tank and there is no way to make it take the fuel from the right tank ?

An easy solution to have both tanks consuming (which is not a fuel management system :) ) is to add <feed>1</feed> into the <propulsion> part
(line 179)
Code: Select all
    <feed>0</feed>
    <feed>1</feed>

Otherwise to be able to choose, this is a fuel management system.

Notice that there is no left tank, right tank, both have <y> 0.00 </y>
(not yet important)
dany93
 
Posts: 861
Joined: Mon Sep 07, 2009 4:43 pm
Location: France (Paris region)
Version: 2020.4.0
OS: Linux Mint 20.3

Re: Cessna 210 "Centurion" family development topic

Postby TheEagle » Tue Sep 28, 2021 5:01 pm

dany93 wrote in Tue Sep 28, 2021 4:54 pm:
Code: Select all
    <feed>0</feed>
    <feed>1</feed>

Otherwise to be able to choose, this is a fuel management system.

Notice that there is no left tank, right tank, both have <y> 0.00 </y>
(not yet important)

According to https://wiki.flightgear.org/JSBSim_Fuel_System, this would disable the first tank ?
Also, you seem to have a wrong FDM config file - the one I have has -118.0 and 118.0 as y coordinates.
Cessna 210 (Wiki)
My other aircraft: my wiki profile !
Other: FGTools (GitHub)
World tour: View on SkyVector
Please consider donating $1 / €1 to help me finance a new camera !
User avatar
TheEagle
 
Posts: 3414
Joined: Sat May 01, 2021 3:27 pm
Location: France
Pronouns: You, he
Callsign: F-EAGLE
IRC name: none
Version: Git next
OS: Ubuntu Studio 22.04

Re: Cessna 210 "Centurion" family development topic

Postby dany93 » Tue Sep 28, 2021 6:05 pm

TheEagle wrote in Tue Sep 28, 2021 5:01 pm:According to https://wiki.flightgear.org/JSBSim_Fuel_System, this would disable the first tank ?

You can do what you want. See the c172p.
By XML or nasal.
But it can be quite complicated.
(the c172p is even more complicated because it artificially has the choice between two available engines)

[EDIT]
The trick is that the engine is fed by one small intermediate tank (think of something like a constant-level carburettor tank), say N= 0, and this tank can be fed by the two main tanks, N = 1, or 2, or 1 and 2 together.
[/EDIT)
Last edited by dany93 on Wed Sep 29, 2021 9:42 am, edited 1 time in total.
dany93
 
Posts: 861
Joined: Mon Sep 07, 2009 4:43 pm
Location: France (Paris region)
Version: 2020.4.0
OS: Linux Mint 20.3

Re: Cessna 210 "Centurion" family development topic

Postby benih » Wed Sep 29, 2021 7:23 am

The C182 simulates the fuel system very deeply, right from the tanks trough pipes and machinery until it finally ends at the engine manifold (ie all the parts mentioned in the POH diagram, which looks very familiar between the two planes, to me at least). The engine sucks from there.
This allows to simulate all nice little things like failing pumps, broken pipes, iced spark plugs etc.
Once you get the hang of it, i find XML more easy and comprehensive; also its more ressource friendly to the CPU.
User avatar
benih
 
Posts: 1689
Joined: Tue Aug 15, 2017 10:34 am
Callsign: D-EBHX
Version: next
OS: Debian Linux 64bit

Re: Cessna 210 "Centurion" family development topic

Postby TheEagle » Wed Sep 29, 2021 12:21 pm

benih wrote in Wed Sep 29, 2021 7:23 am:Once you get the hang of it, i find XML more easy and comprehensive

Yep ! :D But the fuel system won't be one of the first things I implement - first I need a good cockpit and electrical system.
Cessna 210 (Wiki)
My other aircraft: my wiki profile !
Other: FGTools (GitHub)
World tour: View on SkyVector
Please consider donating $1 / €1 to help me finance a new camera !
User avatar
TheEagle
 
Posts: 3414
Joined: Sat May 01, 2021 3:27 pm
Location: France
Pronouns: You, he
Callsign: F-EAGLE
IRC name: none
Version: Git next
OS: Ubuntu Studio 22.04

Re: Cessna 210 "Centurion" family development topic

Postby LowFiveJoe » Wed Sep 29, 2021 10:13 pm

TheEagle,

I took it around the pattern yesterday... looking good so far. Definitely following with interest.
CPL - ASEL/Rotorcraft-Helicopter
Instrument - Airplane/Rotorcraft-Helicopter
CFI/CFII - Rotorcraft-Helicopter
LowFiveJoe
 
Posts: 29
Joined: Fri Sep 27, 2019 9:42 pm
Callsign: CHT0154

PreviousNext

Return to Aircraft

Who is online

Users browsing this forum: No registered users and 19 guests