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I also like point 5 which states "The consequences of exceeding the engine limitations are liable to manifest themselves on some subsequent occasion, perhaps during night flying or over the sea ......" Regardless of the type of fuel being used (the limits being different in each case) the damage being done is generally not instantainous and will not result in immediate loss of the engine (as I have heard it being argued in some threads), but will be dependant on how far over the limitations and for how long they're exceeded for. To fully realise the damage being caused to the engines we would need to have resource management implemented in the game where this type of damage is accumilated and passed on to subsequent mission. (with maintenance being able to repair the damage ideally!) It'd also make for interesting senarios where all the good planes are used up and we are only left with the bunkies! (Janes USNF had a good system like this for campains!) Cheers! |
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What is proof that that 100% of the operational units were NOT using is the Notes on a Merlin Engine found in the Operating Notes. That is a fact. |
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It all depends and it is just as likely to end your trip that flight as the next if the motor is damaged. |
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The known facts are that system was in place before 100 Octane fuel was around as evidenced in the 1937 RAF training manual. The Operating Notes will specify the authorized fuel for the aircraft. The type Operating Notes clearly state that "ALL Operational Units - 100 Octane" after the fuel is adopted for all operational units. We don't see that in any of the Operating Notes during the BoB. Only the Spitfire Mk II carried the 100 Octane specification. The rest require replacing the heads and in some cases, rings as well as the required modifications to the fuel metering system. This work was performed at Service Inspection intervals. Do you know what that means? |
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http://www.wwiiaircraftperformance.org/ap1590b.jpg Given the production numbers for Hurricanes/Spitfires and RAF operational and combat losses prior to the start of the BofB, it is extremely doubtful that any unmodded aircraft were still in front line service. Production during March, April, May and June, and July, of 1940 would have amounted to approximately 1500 Hurricane/Spitfire aircraft, or greater then RAF FC's front line strength at the start of the BofB. The memo clearly establishes that all RAF FC Hurricanes/Spitfires were modded for Hundred octane fuel and 12lb boost prior to the start of the BofB. |
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http://forum.1cpublishing.eu/attachm...1&d=1337142966 This test certificate has a better layout: http://www.spitfireperformance.com/k...ertificate.jpg The power curve is a simplified form of this graph: http://forum.1cpublishing.eu/attachm...1&d=1337143252 and most certainly only contains calculated values which were derived from certain reference values or were applied shorty under controlled conditions to determine the engine power. |
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