Feature Request: Realistic Mustang Start-up Dynamics - Page 4 - ED Forums
 


Notices

Reply
 
Thread Tools Display Modes
Old 08-30-2017, 03:48 AM   #31
Magic Zach
Member
 
Magic Zach's Avatar
 
Join Date: Mar 2017
Location: Alaska
Posts: 523
Reputation power: 2
Magic Zach will become famous soon enoughMagic Zach will become famous soon enough
Default

Quote:
Originally Posted by BuzzU View Post
We have no idea if the Mustangs were warmed up. Also, the air temp has a lot to do with how quick it smooths out. I know my buddies Mustang sputters and coughs when it stone cold.
I just ran a test in DCS 1.5.7. I took a Mustang, and used these air temperatures: 20C/68F, 35C/94F, and -40C/-40F. There was NO wind for any of these tests.
For ALL three of these temperatures, the coolant and carburetor reflected the same temperature as the air. The oil did as well, but the gauge hits its bottom at 0C, but we can assume the actual oil was also the same as the air temperature. If the air temp was 20C, so was the carb, coolant and oil gauge. We can dismiss the idea that the DCS: P-51D Mustang is warmed up when spawned in.

-40C took a bit of effort. The engine would slowly start to catch, instead of instantly catching. It took about 6 seconds for it to wind up to idle. I find it amusing, yet not surprising that I was contrailing at sea level. I wonder what taildragger pilots near my local airport think of winter, as we can hit those low temperatures.
20C was quick as a snap, just like any other time the DCS: Mustang is started.
35C felt no different than 20C.
__________________
Happy flyin', folks!

Last edited by Magic Zach; 08-30-2017 at 03:56 AM.
Magic Zach is offline   Reply With Quote
Old 08-30-2017, 11:23 PM   #32
Yo-Yo
ED Team
 
Yo-Yo's Avatar
 
Join Date: Apr 2003
Posts: 11,996
Reputation power: 336
Yo-Yo has disabled reputation
Default

We cheat a little bit and stated it, as the Mustang was released: at low temperatures the oil is pre-diluted. You can try start the engine at very low temperature, warm it up, fly for 10-20 minutes at maximal power, land and then leave the plane with stopped engine for an hour...

And for the second time you can dilute the oil for the next start-up.
__________________
Ніщо так сильно не ранить мозок, як осколки скла від розбитих рожевих окулярів
There is nothing so hurtful for the brain as splinters of broken rose-coloured spectacles.
Ничто так сильно не ранит мозг, как осколки стекла от разбитых розовых очков (С) Me
Yo-Yo is offline   Reply With Quote
Old 08-30-2017, 11:29 PM   #33
Magic Zach
Member
 
Magic Zach's Avatar
 
Join Date: Mar 2017
Location: Alaska
Posts: 523
Reputation power: 2
Magic Zach will become famous soon enoughMagic Zach will become famous soon enough
Default

Is there any chance that these start up effects and dynamics will be added to DCS in the future? I can only imagine that if it was then it would be after 2.5.
__________________
Happy flyin', folks!

Last edited by Magic Zach; 08-30-2017 at 11:29 PM. Reason: Typo
Magic Zach is offline   Reply With Quote
Old 09-13-2017, 05:21 PM   #34
Magic Zach
Member
 
Magic Zach's Avatar
 
Join Date: Mar 2017
Location: Alaska
Posts: 523
Reputation power: 2
Magic Zach will become famous soon enoughMagic Zach will become famous soon enough
Default

We still alive here?
__________________
Happy flyin', folks!
Magic Zach is offline   Reply With Quote
Old 09-23-2017, 07:52 PM   #35
Magic Zach
Member
 
Magic Zach's Avatar
 
Join Date: Mar 2017
Location: Alaska
Posts: 523
Reputation power: 2
Magic Zach will become famous soon enoughMagic Zach will become famous soon enough
Default

Another one:
https://youtu.be/-yTHDQZL1dE

Skip to 2:35. Or watch the entire video because the Mustang is beautiful, after all. This was at a show, and it was a hot start, but either way...:
https://youtu.be/0ZYxHizFd4Q
__________________
Happy flyin', folks!

Last edited by Magic Zach; 09-23-2017 at 09:11 PM.
Magic Zach is offline   Reply With Quote
Old 12-16-2017, 01:45 AM   #36
Magic Zach
Member
 
Magic Zach's Avatar
 
Join Date: Mar 2017
Location: Alaska
Posts: 523
Reputation power: 2
Magic Zach will become famous soon enoughMagic Zach will become famous soon enough
Default

If the dynamics won't be changed, maybe the sounds can.
https://m.facebook.com/groups/177585...55300822962449
__________________
Happy flyin', folks!
Magic Zach is offline   Reply With Quote
Old 12-18-2017, 03:39 PM   #37
Captain Orso
Member
 
Captain Orso's Avatar
 
Join Date: Feb 2015
Location: Stuttgart, Germany
Posts: 915
Reputation power: 6
Captain Orso is a jewel in the roughCaptain Orso is a jewel in the roughCaptain Orso is a jewel in the roughCaptain Orso is a jewel in the roughCaptain Orso is a jewel in the roughCaptain Orso is a jewel in the rough
Default

The one thing that has always bugged me, is that while starting, the propeller turns way too fast before any cylinders are firing.

In all the videos I've seen, both old and new, the propeller doesn't go over about 60-80 RPM untill cylinders start to fire. Then speed picks up in accordance with the number of firing cylinders.

Try turning over the Merlin with the fuel pump off and the magnetos both off. The propeller runs away at about 200-300 RPM, maybe faster.

You are supposed to turn the propeller 3 blades minimum before ignition, so before either magneto is on. As far as I know, during the war, this was done by hand. In a modern video, I've never seen a P-51 have its propeller turned by hand. I'm guessing that all the starters are modern these days, and can take a lot more turning before burning out. Our manual says 20-30 seconds.

So my start-up procedure is:
Breaks: parking, on
Fuel cock: open
Battery: on
Generator: on
Prop-RPM: 3000
Throttle: 'cracked' 1"
Fuel pump: on
Magnetos: off for now
Starter: on (count blades 1-2-3: <== from here on, even before any
- - cylinders could fire, the propeller is way too fast

- - magnetos: both on
- - primer: on (count 1-2)
- - primer: off
- - - allow engine to turn until it fires up, or 20 seconds, but it almost
- - - always fires by the time I release the primer, with few exceptions

It's minor, but it kind of feels *blähhh*
__________________


System Specs.
Spoiler:
System board ... MSI X99A GAMING 9 ACK
CPU ............ Intel Core i7-5820K @ 3800MHz per OC Genie
CPU cooling .... Noctua NH-D15
Memory ......... 16GB DDR4-3000 G.Skill Ripjaw
PSU ............ Corsair AX860i PSU
Graphics card .. Zotac Nvidia GeForce GTX 1080 Ti Amp! Extreme
System disk .... SanDisk Extreme PRO 480GB SSD
Monitor ........ ASUS MG279Q, 27"
VR ............. Oculus Rift CV1
Captain Orso is offline   Reply With Quote
Old 12-18-2017, 03:48 PM   #38
Magic Zach
Member
 
Magic Zach's Avatar
 
Join Date: Mar 2017
Location: Alaska
Posts: 523
Reputation power: 2
Magic Zach will become famous soon enoughMagic Zach will become famous soon enough
Default

Quote:
Originally Posted by Captain Orso View Post
The one thing that has always bugged me, is that while starting, the propeller turns way too fast before any cylinders are firing.

In all the videos I've seen, both old and new, the propeller doesn't go over about 60-80 RPM untill cylinders start to fire. Then speed picks up in accordance with the number of firing cylinders.
Never noticed it before, but now that I think about it, it does seem to be something that's out of place.
__________________
Happy flyin', folks!
Magic Zach is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT. The time now is 12:26 PM. vBulletin Skin by ForumMonkeys. Powered by vBulletin®.
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.