Is it Study Level

  • The model is looking quite lovely. I just thought I’d ask if it is going to be a study level sim? (I’m hoping it will be).

  • JF Staff

    Yes! If you haven't checked out the latest systems information, here it is:


    The Flight Engineer’s panel with nearly all normal operations is modelled. The systems respond accurately to both correct and incorrect configurations.

    APU - fully simulated
    Electrical system - fully simulated, including simulation of all TRs (transformer-rectifiers), buses, and relays
    Pneumatic system - fully simulated. Responds to various configurations.
    Air system (including packs) - fully simulated, including temperature zone simulation. The various zone temperatures are modelled, as are air mixing and auto/manual modes of operation.
    Pressurisation system:

    • Fully simulated. The system uses a physics-based approach to modelling cabin pressure and responds to the external environment.
    • The system also responds to various configurations, such as whether or not the toilet fan is operating, which affects air out-flow
    • Both positive and negative pressure-relief valves are modelled, in addition to auto/manual modes of operation
      Hydraulic system and brake systems:
    • All systems are modelled, with accurate engine and air-driven hydraulic pump simulation
    • System uses hydraulic pressure, and the braking systems are both modelled and draw hydraulic pressure accordingly from the primary systems when pressurised
    • The reserve braking system and accumulators are modelled in the braking systems, as is the Number 4 electric pump with correct operational limits. The braking system in use can be selected from the switch on the Captain's side main panel.
      Fuel system:
    • Fully simulated, including accurate fuel temperature modelling, icing, and fuel heaters (requiring bleed air to be present for operation)
    • Jet A fuel is modelled, with a freezing temperature of -40 degrees C. The system also simulates fuel waxing and detection of ice crystals in the fuel at ca. -35 degress C with the associated ICING lights. Engines will be starved of fuel if the fuel temperature reaches or exceeds -40 degrees C.
    • All crossfeed and boost pump operations are modelled, and engines can be gravity fed, fed from their respective tank, or fed from the crossfeed, depending on system configuration
    • Fuel is accurately and correctly taken from whichever tanks are supplying fuel at pressure
    • Fuel scavenge pump is modelled, with associated limitations
      Fuel dump system - fully simulated
      Fire systems - fully simulated, not only test capability but also operational
      Anti-skid system - fully simulated
      Gear system and steering - fully simulated
      Flight controls - fully simulated, including the ability to isolate systems with a corresponding reduction in the effectiveness of controls
      Flight instruments:
    • Air-data driven instruments including airspeed, altimeter, VSI are fully simulated using a physics-based system
    • System correctly models the pitot and static systems, and full ice modelling of one or both (pitot and/or static) systems, with correct effects upon the affected instruments
      Captain, F/O and auxiliary systems are modelled (four in total) and drive their associated instruments, with complete instrument source switching
      Additional effects due to aerodynamics are modelled, including differential pressures around the static ports due to AoA (angle of attack) and Beta (sideslip) affecting most notably the standby altimeter, but also the other ADC-driven instruments to a lesser effect (due to compensation built into the ADC). Altimeters and ASIs are subject to temperature (density) error.
      Air data simulation - complete and independent simulation of the atmosphere is present, to include humidity and air density. Systems are affected by air density where appropriate, and not air pressure as is (incorrectly) the case elsewhere.
    • A custom thrust model is implemented, allowing accurate engine performance modelling and engine instrumentation. This translates to accurate aircraft performance and allows the aircraft to be flown 'by the book' regarding fuel flows and expected speeds (many FS aircraft don't settle at a certain speed or settle at an incorrect speed). The custom model allows accurate performance across a very wide range of the flight envelope, from sea level to FL450.
    • Accurate engine performance also means accurate fuel consumption, and optimum/long-range cruise Mach number (M 0.83 for the -100/-200) now means something. Fly faster or slower than this optimum, and maximum range will not be achieved due to the increased fuel burns required.
    • Water injection is also accurately modelled, offering increased thrust at take-off. Usage of the system requires correct configuration and the availability of water. The mass of this water is also not insignificant - full water quantity is also accounted for in the flight model.
    • Engine start-up and shutdown are accurately modelled, including max. motoring RPM being linked to bleed air pressure
    • Advanced engine behaviours typical of non-FADEC (Full Authority Digital Engine Control) control. The fuel flow metering system is modelled, meaning that if large thrust changes are made quickly, especially from low RPM, the engines can be overheated or even catch fire.
    • Engine start procedures must be followed correctly, otherwise hot-starts/fires can occur, combined with failure of the engine to accelerate to idle thrust
    • EPR is accurately modelled and correctly reflects the thrust output of the engine in response to thrust setting and density altitude
      CoG computer - the CoG is accurately computed for the aircraft, both on the ground and in flight. As fuel is burned, the CoG shifts and this is reflected in the handling (most notably, trim changes)
      Gyro instruments - the gyro instruments are faithfully replicated including all drift and acceleration errors, as well as procession errors, 'apparent' and 'real' wander, 'transport rate' corrections etc.
    • The Delco INS is replicated and includes full functionality of all navigation functions and modes. System errors and position drift are also modelled.
    • VOR and ADF receivers are fully simulated, including advanced behaviours
    • ILS is custom-coded in order to avoid the many problems associated with the FS ILS system.
    • Thrust computer - the thrust-rating computer is fully functional and the EPR mode of automatic thrust is modelled, in addition to Speed and Mach hold functions
    • Dual autopilots with autoland capability are modelled, together with accurate system limitations and source selection
    • The flight director system is fully simulated, with source switching and accurate behaviours.

  • Wow, after reading that, this could be the most exciting add-on ever released. Impressive!

  • @Rich
    Thanks Rich, for both answers. I look very much forward to this 747 and to the F3. You guys are turning out some really good stuff over the last few years.

  • So the systems depth is gonna be pretty close to the 747-400/-8 made by a well known developer?

  • @Captain-Bakon said in Is it Study Level:

    So the systems depth is gonna be pretty close to the 747-400/-8 made by a well known developer?

    Its looking a lot better then that!

  • @Jon_OZ said in Is it Study Level:

    Is it Study Level

    So the system depth is gonna be the same then? this is probably gonna be the most advanced classic for flight sim.

    Will the systems be advanced enough to simulate all kinds of failure? can JF confirm this?

  • I wouldnt say the same. It already looks more then all others quite easily.

  • SO it's gonna be advanced enough I can do most of the procedures from the QRH? I really want a study level 747 classic, all of us do in fact this could be the RFP 747 reborn and advanced.

  • I hope it is up to the RFP 747 as that was a great 747-200 sim.


  • @jeffreymg said in Is it Study Level:

    I hope it is up to the RFP 747 as that was a great 747-200 sim.


    You only have to read the description to see its light years ahead of the RFP 747 which wasn't that great.

  • Are all the switches on the overhead panel simulated?

  • JF Staff

    Yep. We haven't quite hooked everything up yet at this point, but everything on the overhead should be functional.

  • Just saw the new PBR shots, is the night lighting gonna be next? will you showcase the floodlights at night too?

  • This post is deleted!

  • "whether or not the toilet fan is operating" WOW. Don't think anyone has done that.