The throttle levers are mounted in a quadrant on the top of the control pedestal. No automatic boost control is fitted and care must be taken to avoid over-boosting on take-off and at all times in flight. A friction damper is provided on the underside of the throttle quadrant (not functional in the VSKYLABS C-47 as the hardware throttle friction cannot be governed from the simulator).
Propeller system consists of a Hamilton Standard 3-bladed, fully feathering, hydromatic propeller is provided for each engine. The propeller governor on each engine automatically maintains constant engine speed by changing the propeller blade angle through the constant speed range to compensate for changes in altitude and throttle setting. The blade angle is changed hydraulically by the flow of engine oil under pressure. The engine oil for propeller feathering is supplied from a reserve in the bottom of the oil-tank, and pressure is provided by a 28-volt DC propeller feathering pump.
The propeller speed control levers are mounted in a quadrant on the left of the throttle levers and are moved forward to INCREASE R.P.M. and backwards to DECREASE R.P.M.
Propeller feathering switches are mounted on the overhead electrical control panels. Each switch is used, in conjunction with a propeller feathering relay and a pressure limit switch, to control a feathering pump motor. When either propeller feathering switch is pushed IN to feather a propeller, a 28-volt DC holding coil holds the switch in. A pressure limit switch in the propeller governor releases the coil when the propeller is feathered, at which time the switch pops out to the normal position.
The feathering operation may be interrupted by manually pulling out the feathering switch. When the propeller feathering switch is pushed IN to un-feather the propeller, it must be held in manually until the propeller has moved out of the feathered position.
Note: Due to interaction limitations, the feathering switches are animated as if they are being held as intended during the feather/un-feathering process.
- Cut-off mode is....cut-off.
- Auto-lean mode is an automatic mixture mode which has an altitude compensation unit, as in the real C-47. As the aircraft climbs or descends, a diaphragm in this unit measures the outside air pressure, metering fuel into the induction system to keep the fuel/air ratio at is most efficient level.
- Auto-rich mode works the same as the auto-lean mode, with a mild 'enrichment' factor. Quoted from the actual C-47 manual, these modes are sometimes called, respectively, "Takeoff and climb" and "Cruise" modes.
- Emergency mode sets full rich mixture, eliminating the automatic feature of the carburetor.
- AUTO RICH and AUTO LEAN are sometimes called respectively "Takeoff and Climb", and "Cruise".
- LH Engine Mixture - assign to ‘Wing sweep’ axis. (instead of ‘Mixture#1’).
- RH Engine Mixture - assign to ‘Thrust vectoring’ axis (instead of ‘Mixture#2’).
- Set the dedicated single-mixture to the ‘Wing sweep’ axis (instead of ‘Mixture’).
- When in the virtual aircraft, set the mixture operation mode to ‘Mono’ by interacting with the mixtures placard, located RH side to the mixture levers.
- ‘Mono’ mode can be set also with a button, using the Slider#22 assignment (see assignments table).
- When ‘Mono’ mode is enabled, the LH-Mixture lever grip will turn yellow, indicating that the two levers can now be operated by moving only the LH-Engine mixture lever.
