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What is Accu-sim?
Real pilots will tell you that no two aircraft are the same. Even taking the same aircraft up from the same airport to the same location will result in a different experience. For example, you may notice one day an engine is running a bit hotter than usual and you might just open your cowl flaps a bit more and be on your way, or maybe this is a sign of something more serious developing under the hood. Regardless, you expect these things to occur in a simulation just as they do in real life. This is Accu-sim - it puts the gauge back in the game.

Realism does not mean having a difficult time with your flying. While Accu-sim is created by pilots, it is built for everyone. This means everything from having a professional crew there to help you manage the systems, to an intuitive layout, or just the ability to turn the system on or off with a single switch. However, if Accu-sim is enabled and the needles are in the red, there will be consequences. It is no longer just an aircraft, it's a simulation.


  • Piston combustion engine modeling
    • Real-world conditions affect system conditions, including engine temperatures. Manage temperatures with engine cowl flaps and oil cooler flaps.
    • Use intercooler flaps to cool Carburetor Air Temperatures (CAT) as high temperatures can adversely affect engine performance while low temperatures can lead to gradual carburetor icing.
    • Spark plugs can clog and eventually fowl if engines are allowed to idle too low for too long. Throttling up an engine with oil-soaked spark plugs can help clear them out and smoke will pour out of exhaust as oil is burned off.
    • Serious overheating can cause scoring of cylinder head walls including ultimate failure if warnings are ignored and overly abused.
    • Realistic water injection (ADI) turns on gradually when enabled. Pushing the engine too hard without water injection automatically injects more fuel to keep cylinders cooler, creating realistic black smoke from unburned fuel.
    • Experience authentic asymmetrical drag when operating various flap systems in flight.
    • On hot summer days you will need to pay very close attention to your systems, possibly expediting your takeoff to avoid overheating due to radiant ground heat.
  • Systems are influenced based on real world conditions.
  • Experience a realistic startups with an engine that can cough and sputter until it catches and turns over.
  • Naturally speaking crew (American and British crews included). Your crew can help you, the captain, fly the plane by giving you critical information when you need it. For example, the Stratocruiser has a built-in takeoff flap warning system that sounds if you apply more than 3/4 throttle and the flaps are not set to takeoff position. If you apply throttle with flaps not properly set and hear this warning, your copilot will make a comment like, "Captain, you need to set your flaps to 25 degrees for takeoff." Your flight engineer gives you advanced updates on systems, giving you time to react. Crew speech is not robotic but quick and natural. This system was created to help you fly the plane, just like a real crew, and to make your experience more pleasurable.
  • Environmental sounds including everything from passengers to brakes squealing to the aircraft creaking.

Please note; Due to the in depth simulation of the Boeing 377, shared cockpit multiplayer is not supported

Introducing Captain of the Ship

If you are familiar with our original Accu-Sim 377, then you know it is about deeply simulating the aircraft systems and the entire cockpit environment. This was our very first Accu-Sim product, and the day it came out virtually every single customer was flying an Accu-Sim aircraft for the first time. Everyone has been having so much fun learning about how real combustion engines behave and working with new, functioning systems.

However, during the past few years we have maintained contact with Tim Chopp of the Berlin Airlift Historical Foundation. For years he has been restoring and re-designing his C-97 Stratofreighter to join the Berlin Airlift to take part in tours with his C-54 Skymaster around the United States and beyond. With our Accu-Sim 377 Stratocruiser, we were able to provide him with the tools he needs to better train for his C-97. Since then he has been using our Boeing B377 almost daily for training and preparation for his C-97.

Over these past three years, Accu-Sim has grown substantially with the release of a P-47 Thunderbolt, Piper J-3 Cub, B-17 Flying Fortress, and Supermarine Spitfire. Now, we have taken all what we have learned and taken a step forward in simulating flying left seat on this classic Boeing airliner.

Now, with Captain of the Ship, your actions count. So Captain, welcome aboard.

Captain of the Ship Features

·         Total freedom from start to finish.  You are the captain, and are not forced to follow a linear progression.  You are free to choose what to do and when, and your intelligent crew will adapt.

·         You learn the most when you are having fun. Our former Accu-Sim 377 is extensively used by Tim Chopp, owner of the Berlin Airlift’s C-54 and C-97 Stratofreighter for his own personal training

·         New career system is based on how well you manage your aircraft systems, quality of flight, and emergencies

·         Intelligent passengers react to the weather, flight, and cabin conditions.

·         This Is Your Captain Speaking... The captain keeps passengers informed on the flight’s progress

·         A Live Engineer manages systems which allows a true left-seat experience

·         Virtual flight attendant performs her duties and reports to the crew

·         Navigator’s station with real-time monitoring and calculations of wind and flight conditions

·         Professional Audio with new sound suite including over 15 electrical motors, authentic switches, wind, cabin creaks, etc.

·         Natural Speech constructs sentences dynamically from a pool of over 1000 sound recordings strong.

·         Accu-Sim physics system shakes the cockpit and airframe based on both external and internal conditions

·         Real-time passenger loading and unloading

·         Deeper systems modeling throughout including oil pressure loss, friction heat, and cabin pressurization failures.

·         New Cabin Pressurization Module driven by the turbochargers

·         New Climate Control Systems including 24,000 watt air conditioning compressors along with dual body heaters

To truly understand Accu-sim one must experience it. 
However the next best thing is to click below to download the Accu-sim Captain of the Ship manual.


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