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#3462893 - 11/26/11 09:56 PM Bristol 'Problem'
vocatx Offline
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Registered: 03/29/06
Posts: 1745
Loc: Voca, Texas
One of the guys I fly with had read on another forum that one of the Bristol models had an engine problem since the latest patch. Just wanted to post that he had done some testing and determined that the only time the Bristol engine blew up was after an extended run at full power. If power is reduced slightly after take off and temps are kept in the proper range, there is no problem with the engine.

I know a lot of people take off and fly at full power for their entire sortie, but this isn't the way a real airplane is flown. Power is reduced after take off and cruise is usually somewhere between 60 and 80% throttle. Instead of a problem, I see more realism here. In fact, most of the aircraft should probably experience engine problems running at full power continually.

Jason (if you read this), is this a new feature in this patch, or something unintentional? If it is a new feature, is it something we'll see in more aircraft later?
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#3462990 - 11/27/11 06:03 AM Re: Bristol 'Problem' [Re: vocatx]
RoFfan Offline
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Registered: 06/20/10
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Power is reduced in a real aircraft to extend the life of the engine, not to prevent it from immediately breaking. This is a bug that has already been reported, though there hasn't been any official response from 777, yet.

P.S. Strange engine break downs are being observed in other aircraft, too.

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#3463005 - 11/27/11 06:34 AM Re: Bristol 'Problem' [Re: RoFfan]
Sim Offline
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Registered: 09/18/01
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Originally Posted By: RoFfan
Power is reduced in a real aircraft to extend the life of the engine, not to prevent it from immediately breaking. This is a bug that has already been reported, though there hasn't been any official response from 777, yet.

P.S. Strange engine break downs are being observed in other aircraft, too.


Actually no. If you keep engine at max rpm, it will cause failure - sooner or later. It's called limitation for a reason.

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#3463012 - 11/27/11 06:49 AM Re: Bristol 'Problem' [Re: vocatx]
RoFfan Offline
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Registered: 06/20/10
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I'll believe the pilots with military aviation experience who have explained this to me, thanks.

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#3463074 - 11/27/11 09:03 AM Re: Bristol 'Problem' [Re: Sim]
PatrickAWilson Offline
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Registered: 01/19/07
Posts: 656
Loc: Tx
Originally Posted By: Sim
Originally Posted By: RoFfan
Power is reduced in a real aircraft to extend the life of the engine, not to prevent it from immediately breaking. This is a bug that has already been reported, though there hasn't been any official response from 777, yet.

P.S. Strange engine break downs are being observed in other aircraft, too.


Actually no. If you keep engine at max rpm, it will cause failure - sooner or later. It's called limitation for a reason.


Agreed, but generally not within the scope of one mission. There are so many things that are not modeled and IMHO do not need to be modeled. Engine degradation over missions, engine replacement, etc. IRL the pilots flew the plane to the edge of the envelope and beyond if their life depended on it and engine be damned. Witness the front line reports of the use of the altitude throttle at low alt - against all recommendations but very necessary in a pinch. If the engine blew then it got replaced, but it usually didn't. Better that chance than the otherwise inevitable lead breakfast.

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#3463107 - 11/27/11 10:33 AM Re: Bristol 'Problem' [Re: RoFfan]
vocatx Offline
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Registered: 03/29/06
Posts: 1745
Loc: Voca, Texas
Originally Posted By: RoFfan
Power is reduced in a real aircraft to extend the life of the engine, not to prevent it from immediately breaking. This is a bug that has already been reported, though there hasn't been any official response from 777, yet.

P.S. Strange engine break downs are being observed in other aircraft, too.


I never said that power was reduced to prevent 'immediate' damage. Flying around at full power continually wasn't done by WWI pilots. Yes, engines and airframes got abused in combat, but it wasn't from take off to landing. This was something that was debated a lot in Il-2 'back in the day' as well. Keep in mind that in WWI engine technology was in it's relatively early stages as well. Durability and reliability were both a bit sketchy.
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#3463109 - 11/27/11 10:39 AM Re: Bristol 'Problem' [Re: RoFfan]
Sim Offline
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Originally Posted By: RoFfan
I'll believe the pilots with military aviation experience who have explained this to me, thanks.


ORLY? LOL.

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#3463150 - 11/27/11 11:56 AM Re: Bristol 'Problem' [Re: vocatx]
Copterdrvr Offline
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Registered: 10/19/01
Posts: 2222
Loc: Lafayette, LA. USA
Well, with regard to turbine engines in helicopters, we never fly them at 100 % power all the time. The only time we use all of the available power is during takeoff and to a lesser extent, landing. Most modern helo's have what's referred to as a "five minute takeoff limit" which allows us to use up to the equiv. of 100% available power. The cruise power setting that's used in the majority of the helos I fly averages around 80% power.

Flying in the Army was the same thing-generally speaking. Sometimes the rules go out the window when you find yourself in an area occupied by people who don't qualify as your friends. In the civilian world, the rules are the rules---unless you're flying a twin-engined helo and one of the engines takes a poop. Then we generally go by the saying "the engine that failed belongs to the company-the engine still running belongs to ME and I'll do whats necessary to get this aircraft on the ground in one piece to include whatever power is required to get this thing down safely.

copter
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#3463151 - 11/27/11 12:10 PM Re: Bristol 'Problem' [Re: Copterdrvr]
Troll Offline
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Registered: 10/11/99
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Originally Posted By: Copterdrvr
"the engine that failed belongs to the company-the engine still running belongs to ME and I'll do whats necessary to get this aircraft on the ground in one piece to include whatever power is required to get this thing down safely.


LOL! I'm SO stealing that quote! :-D
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#3463487 - 11/28/11 01:01 AM Re: Bristol 'Problem' [Re: RoFfan]
LukeFF Offline
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Registered: 06/11/01
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Originally Posted By: RoFfan
I'll believe the pilots with military aviation experience who have explained this to me, thanks.


Sim is a qualified pilot in the US Air Force. wink

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