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jfri

What if I had done this in real life

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I have the FSD Panther plane and manual gives recommended MAP and RPM settings for cruise. Well I did a flight and completely ignored that and put both throttle and prop lever to max all the time (about 45 min). What would happen if I did that in real Panther? In FS9 no problems whatsoever. And I have similary experience with other planes.

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For what I know nothing really. You'd just get to your destination a bit sooner and pay more at the pump. I don't think it would overhead or overstress the engines or props but you may overspeed. Did you overspeed?Jason

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>For what I know nothing really. You'd just get to your>destination a bit sooner and pay more at the pump. I don't>think it would overhead or overstress the engines or props but>you may overspeed. Did you overspeed?>I was in the yellow arc area i.e faster than normal cruise.

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It's ok to go into the yellow arc during level flight through smooth air, although it's probably not a very good practise for different reasons.Jason

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>It's ok to go into the yellow arc during level flight through>smooth air, although it's probably not a very good practise>for different reasons.>No according to the comercial flight lesson with the Baron this should only be done in smooth air and with caution. If you would do it in turbulent air what problems would you encounter in real life?

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>>It's ok to go into the yellow arc during level flight>through>>smooth air, although it's probably not a very good practise>>for different reasons.>>>No according to the comercial flight lesson with the Baron>this should only be done in smooth air and with caution. If>you would do it in turbulent air what problems would you>encounter in real life?Might need a wing replacement... before landing. ;)

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>I have the FSD Panther plane and manual gives recommended MAP>and RPM settings for cruise. Well I did a flight and>completely ignored that and put both throttle and prop lever>to max all the time (about 45 min). What would happen if I did>that in real Panther? In FS9 no problems whatsoever. And I>have similary experience with other planes.The correct answer that no one has said is this: By running the engine at full open for all phases of flight from Take-Off you would be causing excessive stress on the engine that over time of doing the same thing could lead to premature wear on the engine(s). With engines of this power, you need to back off of full throttle shortly after takeoff and set climb power. As your manifold pressure decreases with your altitude gain, then you bump up the power to keep your pressure setting the same or max power, which ever comes first.

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Dan has hit the nail on the head and to take his point a few steps further...The engine will wait for a suitably inappropriate time like over a large expanse of water, or mountains or just at rotate speed on a short runway surrounded by houses, then exercise it's Murphy's given right to quit :-). Quite possibly in a spectacular fashion involving bits of valves, propeller blades and piston heads flying about all over the place and almost definitely flames.Leaving you up a proverbial creek with no means of propulsion. In the sim, no one cares, in real life it's game over, in every respect but hopefully not for the kids playing in the garden of the aforementioned houses ... and herein lies the rub.Ian

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>Dan has hit the nail on the head and to take his point a few>steps further...>>The engine will wait for a suitably inappropriate time like>over a large expanse of water, or mountains or just at rotate>speed on a short runway surrounded by houses, then exercise>it's Murphy's given right to quit :-). Quite possibly in a>spectacular fashion involving bits of valves, propeller blades>and piston heads flying about all over the place and almost>definitely flames.>>Leaving you up a proverbial creek with no means of propulsion.>In the sim, no one cares, in real life it's game over, in>every respect but hopefully not for the kids playing in the>garden of the aforementioned houses ... and herein lies the>rub.>I really miss this aspect of realism in flight simulator.

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>>>I really miss this aspect of realism in flight simulator.It's flightsim....so, if you don't like the engine running, just turn it off..hehe. It's fun to try and screw yourself to the point of no return.With respect to the topic, I ground handle a guys' Cessna 421 which he firewalls for most phases of flight, he goes through at least 1 engine per year. These engines are suppose to be able of lasting 1500-2000hrs between overhaul. The owner certainly doesn't flying 1/2 that much. He justs wants to get places at a cost that he doesn't care about.

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>With respect to the topic, I ground handle a guys' Cessna 421>which he firewalls for most phases of flight, he goes through>at least 1 engine per year. These engines are suppose to be>able of lasting 1500-2000hrs between overhaul. The owner>certainly doesn't flying 1/2 that much. He justs wants to get>places at a cost that he doesn't care about. If he's really such a tough guy as described tell him to go buy a CitationX. :)Jason

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> He justs wants to get>places at a cost that he doesn't care about. We'll see how much he cares when he chucks an engine at 200ft AGL after take-off.

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>Well I did a flight and>completely ignored that and put both throttle and prop lever>to max all the time (about 45 min).You'd also get better speed if you pulled the props back.Whether that's modelled in the game or not I have no idea. Basically for takeoff (in real life), you want to have high rpm / low pitch, and for cruise, low rpm / high pitch. It will essentially turn your prop from a climb prop into a cruise prop.The nice thing about being able to get better speed out of a lower rpm setting is that you can pull those throttles back. I really don't see any reason why someone would leave everything full forward like that for normal cruise...there's just no benefit, not to mention it's unsafe. The person that does that is a person that probably doesn't use checklists either. Not doing either of those, I wonder what else s/he doesn't do. I wouldn't fly with them...

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Hi,Well, it depends how good the simulation is, you don't do it with the RAS Spitfire without getting in engine troubles.Hugo

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"Whether that's modelled in the game or not I have no idea"I don't believe so, and this is one of my major gripes with all versions of FS.First of all to those with more knowledge than I, and already know this, forgive me for being so fundamental, but I thought it might be new and useful information for anyone totally new to flightsim with no real world knowledge of flying:There are basically two types of props to consider. Fixed pitch props are just that. rigid and unchanging. Reducing MP (power) reduces the RPM of the prop, and increasing MP (advancing the throttle) increases RPM. However, with what is called a constant speed prop, the RPM can be set which will be held constant by electric or hydraulic adjustment of the prop pitch. Anywhere within a reasonable power settings by the throttle, the prop RPM will remain constant by automatically adjusting the pitch angle. The goal is to obtain maximum power and RPM for takeoff, but more efficiecy and speed at cruise settings with a reduced power setting (throttle).For some reason, this seems to be reversed with all birds that I know about in flightsim. For example, say a PA-24-250 (Piper Commance): Takeoff: Full throttle, max Rpm (Firewalled throttle and prop)Climbout: Reduce MP to 24.5", RPM to 2,450. As altitude increases, throttle will have to be advanced to maintain MP until such time it will be at this setting (or below) with full throttle (MP reduces with altitude)Cruise: Reduce MP 22.5", RPM to 2,250 (IN THAT ORDER, ALWAYS REDUCE MP, THEN RPM, and/or INCREASE RPM THEN MP). If we have climbed to a high enough altitude, we may have a MP in this range, or even below at full throttle and no throttle adjustment will be applicable. If straight and level flight has been established at a stable speed and we then reduce the RPM (add pitch), TAS should increase. Unfortunately, in FS speed will be reduced.Note that all settings may be different as per the data in the Pilot's Operating Manual for the bird in question (Especially if it is turbocharged). However, for "reality" within the envelope data in the POM, reduced RPM (increased pitch) should add speed, but the exact reverse happens in FS. The aircraft will slow down just like it would with a fixed pitch prop.Some addon aircraft in past years have included options that include wear and tear on engines and props along with relative cost estimates for longevity and repair. After so may hours and/or abuse they don't play any more until optional overhauls or repairs are selected.Happy flying:RTH

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>If straight and level flight has been established at a stable>speed and we then reduce the RPM (add pitch), TAS should>increase. Unfortunately, in FS speed will be reduced.>>Note that all settings may be different as per the data in the>Pilot's Operating Manual for the bird in question (Especially>if it is turbocharged). However, for "reality" within the>envelope data in the POM, reduced RPM (increased pitch) should>add speed, but the exact reverse happens in FS. The aircraft>will slow down just like it would with a fixed pitch prop.I don't know where you got this information, but that is not correct. On an aircraft with a Constant Speed Prop, reducing RPM produces a decrease in TAS. The only advantage of decreasing RPM is to improve fuel consumption (at lower RPM the engine is more energy-efficient) and to decrease engine wear and tear.Lower RPM always decreases the thrust produced, and this is the reason min pitch (max RPM) is used on takeoff and landings.Marco

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I did not fly the FSD Seneca V by the book and after a few hours I lost the port engine. Of course my return was in IMC with a down-wind landing.This was in FS9.Jim

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