A2A Simulations P-51 Military with Accu-Sim (FSX)

ACCU-SIM FEATURES

• A true dual-speed supercharged engine experience.
• Feel the exhilaration of flying an Accu-Sim-powered P-51 Mustang.
• Mach drag built and tested specifically for the P-51D airframe.
• Merlin V-12 liquid cooled V-1650 engine built to manufacturer’s specifications.
• True propeller simulation.
• Electric starter with accurate cranking power.
• Dynamic ground physics including both hard pavement and soft grass modelling.
• Primer-only starts are now possible. Accu-Sim monitors the amount of fuel injected and it’s effectiveness to start and run the engine.
• Cold mornings require energising the primer for 3-4 seconds, and warm starts may only need a second or two.
• Immersive in-cockpit, physics-driven sound environment from A2A engineered P-51 recordings.
• Complete maintenance hangar including landing gear, internal systems and detailed engine tests including compression checks.
• Understand how a high-performance aircraft behaves and see how well you can cope with all of the unexpected things that can happen. No two flights are ever the same.
• Piston combustion engine modelling. Air comes in, it mixes with fuel and ignites, parts move, heat up, and all work in harmony to produce the wonderful sound of a V-12, liquid-cooled racing engine. Now the gauges look beneath the skin of your aircraft and show you what Accu-Sim is all about.
• Airflow, density and it's temperature not only affect the way your aircraft flies, but how the internal systems operate.
• Real-world conditions affect system conditions, including engine temperatures. Manage temperatures with a radiator flap and proper flying techniques.
• Spark plugs can clog and eventually foul if the engine is allowed to idle too low for too long. Throttling up an engine with oil-soaked spark plugs can help clear them out and smoke.
• Overheating can cause scoring of cylinder head walls which could ultimately lead to failure if warnings are ignored and overly abused.
• Large engined aircraft like the P-51 like to be in the air, not on the ground. So don't idle for too long, get in the air where the air supply is plentiful.
• Engine, airframe, cockpit panel and individual gauges tremble from the power of a high-performance combustion engine.
• Authentic component drag. Dropping your gear will pull your aircraft realistically as the landing gear is deployed along with cooling flaps, ordnance and even opening the canopy. Drop your gear, deploy your flaps, or just try a dive, and listen to your airframe.
• System failures, including flaps that can independently jam or break based on the actual forces put upon them. If you deploy your flaps at too high a speed, you could find yourself in a very dangerous situation.
• Total audible cockpit made with recordings from the actual aircraft. Before you fly, enjoy clicking everything.
• Primer system modeled. Accu-Sim monitors the amount of fuel injected and it's effectiveness to start the engine. Cold mornings require as many as 12 strokes and warm starts may only need a single shot.
• Authentic battery. The battery capacity is based on temperature. The major draw comes from engine starting. 
• Oil pressure system is affected by oil viscosity (oil thickness). Oil viscosity is affected by oil temp and oil dilution level. Now when you start the engine, you need to be careful and not raise RPM too much until oil temp is high enough to give proper oil pressure. If you raise RPM too high on a cold engine, especially very cold, oil pressure can raise to over 150 psi. Oil pump failure can result. Extended inverted flight (negative g) can uncover the oil sump and reduce oil pressure. Do not fly in a negative g situation for more than 5 seconds.
• Oxygen starvation (hypoxia) is modelled. Just take off and climb without oxygen to see.

ADDITIONAL AIRCRAFT INFORMATION

In April, 1940, when World War II was, for Britain at least, in a kind of holding pattern and waiting to burst forth into the savage fury that would soon engulf the entire world, the British Air Purchasing Commission (BAPC) requested that North American Aviation, Inc. (NAA) build 300 Curtiss P-40s for the R.A.F. Had “Dutch” Kindelberger, NAA’s President agreed to this, what is generally considered to be the greatest piston engine fighter aeroplane ever built would have never been created. Instead, NAA counter offered that they could produce a superior aeroplane to the P-40 and agreed to do it in 120 days. 102 days later the first Mustang airframe was completed, and 47 days after that the first Mustang flew. It went on to serve in every theatre of the War and in every Allied air force. A total of 16,766 were built, making it the most numerous American fighter aircraft. Because of the great care and attention to aerodynamic detail that went into its brilliant design, the Mustang was, from its inception, one of the fastest single-engine piston aeroplanes of the WWII era.