Jump to content

WAR emergency power


gdotts

Recommended Posts

I always open my doors manually. I usually leave the coolant door alone, but when I climb (and I mean 3,500-4,000ft/m climb) I have to fully open the oil door.

Though, even in level flight, the door will not regulate temperature very well, and will sit past thr green area. It frustrates me that in auto, neither doors use their full range of motion.

Hardware: T-16000M Pack, Saitek 3 Throttle Quadrant, Homemade 32-function Leo Bodnar Button Box, MFG Crosswind Pedals Oculus Rift S

System Specs: MSI MPG X570 GAMING PLUS, GTX 1070 SC2, AMD RX3700, 32GB DDR4-3200, Samsung 860 EVO, Samsung 970 EVO 250GB

Modules: Ka-50, Mi-8MTV2, FC3, F/A-18C, F-14B, F-5E, P-51D, Spitfire Mk LF Mk. IXc, Bf-109K-4, Fw-190A-8

Maps: Normandy, Nevada

[sIGPIC][/sIGPIC]

Link to comment
Share on other sites

I dont play with radiators. It was not recommended during ww2 and it shouldnt be a requirement. Point I'm trying to make is that those engine failures are peculiar in that engine seizes instantly without a warning, with temps only going up AFTER it seized. I've noticed that needle at air coolant gauge keeps climbing after engine stops, going beyond red limit and to the end of the scale.

 

I've also had a number of failures when I was diving so more than satisfactory cooling was provided.

AMD Ryzen 5900X @ 4.95 Ghz / Asus Crosshair VII X470 / 32 GB DDR4 3600 Mhz Cl16 / Radeon 6800XT / Samsung 960 EVO M.2 SSD / Creative SoundBlaster AE-9 / HP Reverb G2 / VIRPIL T-50CM /
Thrustmaster TPR Pendular Rudder Pedals / Audio Technica ATH-MSR7

Link to comment
Share on other sites

There are other reasons for engine failure than just overheating, but since we do not get a detailed report on what failed or why, we can only guess.

 

you know that acording to p-51 manual aditional checking was required by ground crew after breaking stop wire on the throttle and after 10 hours of acumulated WEP operation engine had to be disamantled for full check. So if in real life engine would be as reliable as this one in dcs no single engine would made it to 10 hours of acumulated WEP operation.

then in manual would say something like this do not use WEP if you want live another day

right now chance of engine seizure it way to high


Edited by grafspee

System specs: I7 14700KF, Gigabyte Z690 Aorus Elite, 64GB DDR4 3600MHz, Gigabyte RTX 4090,Win 11, 48" OLED LG TV + 42" LG LED monitor

Link to comment
Share on other sites

I dont play with radiators. It was not recommended during ww2 and it shouldnt be a requirement. Point I'm trying to make is that those engine failures are peculiar in that engine seizes instantly without a warning, with temps only going up AFTER it seized. I've noticed that needle at air coolant gauge keeps climbing after engine stops, going beyond red limit and to the end of the scale.

 

I've also had a number of failures when I was diving so more than satisfactory cooling was provided.

 

temp still going up is actualy accurate becouse what is temp gage showing is only temp of coolant. There is limited energy that could be transfered betweent engine block and coolant so even if coolant temp is not high it doesnt mean that somewhere inside engine is everythign ok.

so when engine stops suddenly you can see that coolant temp will still climb since there is no coolant flow there is couple places extremly hot in the engine

System specs: I7 14700KF, Gigabyte Z690 Aorus Elite, 64GB DDR4 3600MHz, Gigabyte RTX 4090,Win 11, 48" OLED LG TV + 42" LG LED monitor

Link to comment
Share on other sites

Coolant temps continuing to go up after seizure shows it was temp that made it seize up.
Not always. When prop striking, the temp will shoot up as well. I think it just happens when the engine seizes in general.

Hardware: T-16000M Pack, Saitek 3 Throttle Quadrant, Homemade 32-function Leo Bodnar Button Box, MFG Crosswind Pedals Oculus Rift S

System Specs: MSI MPG X570 GAMING PLUS, GTX 1070 SC2, AMD RX3700, 32GB DDR4-3200, Samsung 860 EVO, Samsung 970 EVO 250GB

Modules: Ka-50, Mi-8MTV2, FC3, F/A-18C, F-14B, F-5E, P-51D, Spitfire Mk LF Mk. IXc, Bf-109K-4, Fw-190A-8

Maps: Normandy, Nevada

[sIGPIC][/sIGPIC]

Link to comment
Share on other sites

No, and that's not the point. The point is, if you've ever had your engine seize in the DCS Mustang, you'll notice that it doesn't matter how it seized, the temps will always top out the gauge.

Hardware: T-16000M Pack, Saitek 3 Throttle Quadrant, Homemade 32-function Leo Bodnar Button Box, MFG Crosswind Pedals Oculus Rift S

System Specs: MSI MPG X570 GAMING PLUS, GTX 1070 SC2, AMD RX3700, 32GB DDR4-3200, Samsung 860 EVO, Samsung 970 EVO 250GB

Modules: Ka-50, Mi-8MTV2, FC3, F/A-18C, F-14B, F-5E, P-51D, Spitfire Mk LF Mk. IXc, Bf-109K-4, Fw-190A-8

Maps: Normandy, Nevada

[sIGPIC][/sIGPIC]

Link to comment
Share on other sites

I never seized one in DCS.

 

I have seen many seize on an engine dyno. (i'm an old hot rodder) I only noticed temp going up when overheating caused the seize. If it lost a bearing and seized I didn't see the temps do anything unusual.

 

My point is, I believe if they fix the cooling on the Mustang seizures will be a lot less. I won't say they go completely away, because some guys can break anything. ;)

Buzz

Link to comment
Share on other sites

Heh. Tbh I haven't locked up my engine (that wasn't caused by damage) in a real long time. Though just hours ago on Burning Skies, I typed half a sentence before I realized the chat was closed, and I had gone into WEP without noticing it until I started losing engine power from overheating, all temp gauges were topped out. While it didn't seize, I limped it back to Krymsk from red TA1, scraping up 150MPH in my shallow dive. Engine finally died when I cut to idle on the runway.

 

The cooling dynamics will make overheating the Merlins different, for sure. It will be pretty interesting to see what ED comes up with for us.

Hardware: T-16000M Pack, Saitek 3 Throttle Quadrant, Homemade 32-function Leo Bodnar Button Box, MFG Crosswind Pedals Oculus Rift S

System Specs: MSI MPG X570 GAMING PLUS, GTX 1070 SC2, AMD RX3700, 32GB DDR4-3200, Samsung 860 EVO, Samsung 970 EVO 250GB

Modules: Ka-50, Mi-8MTV2, FC3, F/A-18C, F-14B, F-5E, P-51D, Spitfire Mk LF Mk. IXc, Bf-109K-4, Fw-190A-8

Maps: Normandy, Nevada

[sIGPIC][/sIGPIC]

Link to comment
Share on other sites

Heh. Tbh I haven't locked up my engine (that wasn't caused by damage) in a real long time. Though just hours ago on Burning Skies, I typed half a sentence before I realized the chat was closed, and I had gone into WEP without noticing it until I started losing engine power from overheating, all temp gauges were topped out. While it didn't seize, I limped it back to Krymsk from red TA1, scraping up 150MPH in my shallow dive. Engine finally died when I cut to idle on the runway.

 

The cooling dynamics will make overheating the Merlins different, for sure. It will be pretty interesting to see what ED comes up with for us.

 

never happent to me when i use wep i alwayes monitor temp so every engine seizing happen to me at temps within limits.

you just overheat coolant and this is difrent kind of engine damage which happen to me but not at wep setting it happen to me at continous power

System specs: I7 14700KF, Gigabyte Z690 Aorus Elite, 64GB DDR4 3600MHz, Gigabyte RTX 4090,Win 11, 48" OLED LG TV + 42" LG LED monitor

Link to comment
Share on other sites

Once I understood the following, the engine problems disappeared.

 

Capture.thumb.JPG.4d3ab3baa22a6dd9a003b6e0a1dafe58.JPG

Intel® Core™ i7-8750H Processor

15.6-inch FHD (1920 x 1080) IPS Anti-Glare LED-Backlit Display

16GB, 2x8GB, DDR4, 2666MHz

128GB SSD + 1TB 5400 RPM Hard Drive

NVIDIA GeForce GTX 1060 6GB GDDR5

Windows 10 Home 64bit

Link to comment
Share on other sites

%5B/img%5D

 

this looks like manual for older versions where you had thorttle and wep separated.

we have later model with wep incorporated in to thorttle and at sea level you gaining about 11mph at 67" than at 61" i know that 61" have 15 minute mark and 67" has 5minute mark i never used wep for longer than 2-3minutes most often its no more then 1 minute.

and alter version allowed for 75/72" wep were used giving even more top speed gain and if k-4 is on your six this 11mph higher top speed at wep is blessing thing

http://www.wwiiaircraftperformance.org/mustang/P-51D_15342_Level.jpg' alt='P-51D_15342_Level.jpg'>


Edited by grafspee

System specs: I7 14700KF, Gigabyte Z690 Aorus Elite, 64GB DDR4 3600MHz, Gigabyte RTX 4090,Win 11, 48" OLED LG TV + 42" LG LED monitor

Link to comment
Share on other sites

I wonder how higher octane would affect the engine's limits and breaking point, if at all.

Hardware: T-16000M Pack, Saitek 3 Throttle Quadrant, Homemade 32-function Leo Bodnar Button Box, MFG Crosswind Pedals Oculus Rift S

System Specs: MSI MPG X570 GAMING PLUS, GTX 1070 SC2, AMD RX3700, 32GB DDR4-3200, Samsung 860 EVO, Samsung 970 EVO 250GB

Modules: Ka-50, Mi-8MTV2, FC3, F/A-18C, F-14B, F-5E, P-51D, Spitfire Mk LF Mk. IXc, Bf-109K-4, Fw-190A-8

Maps: Normandy, Nevada

[sIGPIC][/sIGPIC]

Link to comment
Share on other sites

I wonder how higher octane would affect the engine's limits and breaking point, if at all.

 

with 150 octane fuel max mp was moved from 67 to 72/75 boosting power from 1700 to lamost 2000 limits on WEP stay the same

v-1650-9 could hit 90" with w/m injection

System specs: I7 14700KF, Gigabyte Z690 Aorus Elite, 64GB DDR4 3600MHz, Gigabyte RTX 4090,Win 11, 48" OLED LG TV + 42" LG LED monitor

Link to comment
Share on other sites

The excerpt came from the pilots training manual for D to K series.

The method of engaging WEP is irrelevant. The relationship between altitude, atmospheric pressure, normal throttle boost, WEP boost, manifold pressure and engine limitations are key to understanding how to stop engine problems. Below 5000 feet normal throttle can deliver enough boost to exceed engine limitations.

Intel® Core™ i7-8750H Processor

15.6-inch FHD (1920 x 1080) IPS Anti-Glare LED-Backlit Display

16GB, 2x8GB, DDR4, 2666MHz

128GB SSD + 1TB 5400 RPM Hard Drive

NVIDIA GeForce GTX 1060 6GB GDDR5

Windows 10 Home 64bit

Link to comment
Share on other sites

with 150 octane fuel max mp was moved from 67 to 72/75 boosting power from 1700 to lamost 2000 limits on WEP stay the same

v-1650-9 could hit 90" with w/m injection

Obviously....

I'm talking about cooling. “Breaking point”

Hardware: T-16000M Pack, Saitek 3 Throttle Quadrant, Homemade 32-function Leo Bodnar Button Box, MFG Crosswind Pedals Oculus Rift S

System Specs: MSI MPG X570 GAMING PLUS, GTX 1070 SC2, AMD RX3700, 32GB DDR4-3200, Samsung 860 EVO, Samsung 970 EVO 250GB

Modules: Ka-50, Mi-8MTV2, FC3, F/A-18C, F-14B, F-5E, P-51D, Spitfire Mk LF Mk. IXc, Bf-109K-4, Fw-190A-8

Maps: Normandy, Nevada

[sIGPIC][/sIGPIC]

Link to comment
Share on other sites

The excerpt came from the pilots training manual for D to K series.

The method of engaging WEP is irrelevant. The relationship between altitude, atmospheric pressure, normal throttle boost, WEP boost, manifold pressure and engine limitations are key to understanding how to stop engine problems. Below 5000 feet normal throttle can deliver enough boost to exceed engine limitations.

 

ofc that engien cant run continously at this power setting . But when manufcture company is setting engine limitation rules and we can find 67" 3000rpm allowed for max 5 minutes and later whne 150 octane fuel become avilable 75" was allowed. and trails of plane showing that they used wep at sea level with significant improvments in top speed. dont know what to thing about that. if this 5000ft was so important to engien life there should be some warning in cocpit dont you think

and as i se form charts is that at low alt wep gives the most proformance becouse at alt about 26kft wep gives 2-3mph only in top speed.

and i found it that running engine at around 2800 rpm give much more life time at 67" which is absolutely forbidden to run wep at anyother rpm than 3000

i woudl expect to blow engine in matter of seconds at this power setting


Edited by grafspee

System specs: I7 14700KF, Gigabyte Z690 Aorus Elite, 64GB DDR4 3600MHz, Gigabyte RTX 4090,Win 11, 48" OLED LG TV + 42" LG LED monitor

Link to comment
Share on other sites

I think the key word in this debate is emergency. You use it in emergencies for a short duration..Engine damage was not unexpected.

Intel® Core™ i7-8750H Processor

15.6-inch FHD (1920 x 1080) IPS Anti-Glare LED-Backlit Display

16GB, 2x8GB, DDR4, 2666MHz

128GB SSD + 1TB 5400 RPM Hard Drive

NVIDIA GeForce GTX 1060 6GB GDDR5

Windows 10 Home 64bit

Link to comment
Share on other sites

I think the key word in this debate is emergency. You use it in emergencies for a short duration..Engine damage was not unexpected.

yeap in fw190 d9 i dont use mw50 at all becoue engine seizing are almost certain :P

in p-51 i use wep only in death scenarios but now i will not use it at all :P

i wonder how test pilots messured climb preformance at wep power settings becouse in dcs you got engine dead almost certain


Edited by grafspee

System specs: I7 14700KF, Gigabyte Z690 Aorus Elite, 64GB DDR4 3600MHz, Gigabyte RTX 4090,Win 11, 48" OLED LG TV + 42" LG LED monitor

Link to comment
Share on other sites

I only use WEP when at very high altitude and need a boost to catch up to or getaway from the enemy. When I first started with the p51 I had lots of engine failures. Now very few failures. Watch the video from Greg on manifold pressure.

Intel® Core™ i7-8750H Processor

15.6-inch FHD (1920 x 1080) IPS Anti-Glare LED-Backlit Display

16GB, 2x8GB, DDR4, 2666MHz

128GB SSD + 1TB 5400 RPM Hard Drive

NVIDIA GeForce GTX 1060 6GB GDDR5

Windows 10 Home 64bit

Link to comment
Share on other sites

I only use WEP when at very high altitude and need a boost to catch up to or getaway from the enemy. When I first started with the p51 I had lots of engine failures. Now very few failures. Watch the video from Greg on manifold pressure.

 

the biggest mistery is that you can drive spitfire with exact power settings and every thing is ok you can climb 67" with no problem

 

let me test cilmb from 5k to 15k ft at wep

it climbed w/o probelms

but if use of wep below 5000 is so deadly why no warrning in cocpit about it :P

i read another p-51 manual from 1944 mention nothing about 5000ft

is 67 or 75" realy gives nothing only engine seizure

na-p51b-150grade-level.jpg


Edited by grafspee

System specs: I7 14700KF, Gigabyte Z690 Aorus Elite, 64GB DDR4 3600MHz, Gigabyte RTX 4090,Win 11, 48" OLED LG TV + 42" LG LED monitor

Link to comment
Share on other sites

I only use WEP when at very high altitude and need a boost to catch up to or getaway from the enemy. When I first started with the p51 I had lots of engine failures. Now very few failures. Watch the video from Greg on manifold pressure.

 

Does it say in the P51D manual that you cant use WEP below 5000ft? I know it says that WEP gives little benefit below 5000ft in the DCS P51D manual. I dont remember it saying that WEP below 5000ft causes any more stress on the engine then at any other altidude. There are flight tests that show significant speed improvement at sea level with WEP.

 

The P51D manual(not DCS manual) says nothing about engine failure. It says that WEP should be avoided because it reduces the lifespan of the engine. It also says that after 5 hours of war emergency time the engine should be pulled for tear-down inspection and reconditioning. Regarding time WEP can be used, all it says is that 95°C oil temp must not be exceded for 5 minutes. It also says that coolant outlet temp should not excede 121°C.

 

You cant run the DCS P51D WEP for any period of time without engine failure nevermind the 5 hours it says in the manual.

Link to comment
Share on other sites

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...