User manual

DodoSim 206 FSX User Manual

Page 46

3.4.1.17 Timed Procedure Adherence

The helicopter’s gas turbine engine creates an enormous amount of heat and can go from ambient

temperatures to many hundreds of degrees in the first few seconds of combustion. The pilot must

take care to allow this heat to dissipate throughout the engine and transmission systems before

taking off to avoid thermally shocking bearings and oil pathways. Failure to do so will likely cause

excessive engine wear and reduce longevity.

Pilot Information: If the helicopter’s engine has been shut down for 15 minutes or more, the pilot

must allow one minute between engine start and increasing the throttle from idle to flight-ready.

Similarly, upon landing the pilot must reduce the throttle to idle and wait for the high engine

temperatures to dissipate from the bearings through the oil before shutting down the turbine. The

only exception to this rule is if an emergency situation is occurring such as an engine fire and the

helicopter needs to be shut down and vacated immediately.

Pilot Information: The pilot should reduce throttle to idle and wait for two minutes before shutting

off the fuel to stop the engine.

3.4.1.18 Fully Automatic Engine Start Trainer Mode

The DodoSim 206 FSX includes a fully automatic start-up and shut-down trainer mode. When

switched to the relevant difficulty level, the pilot can start or shut down the helicopter using the

relevant key bindings in the FSX Settings. (Default key binding for start-up is [Ctrl]+E. There is no

default binding for shut-down. It is suggested that [Ctrl]+[Shift]+E be assigned.)

During automatic start-up or shut-down, the helicopter will perform all the necessary steps the pilot

would otherwise be required to perform, including setting of all relevant circuit breakers and

switches, operation of the starter and application of fuel. During the automatic start-up and shut-

down, the pilot can observe the procedure as each input is highlighted on the 2D cockpit panels.

Whilst the helicopter is performing an automatic sequence, the yellow Trainer icon will flash on the

main panel:

The procedure can be aborted at any time by clicking on the icon. However, care must be taken

that it is not done during the critical start-up phase after initial combustion and before the self-

sustaining Gas Producer (N1) speed of 58% is reached, as the starter will be released while fuel is

being delivered and temperatures will consequently rise out of control.

Important note: The start sequence may hang if you reverse the setting of any switches or CBs

after the automatic sequence has set them. If this happens you should either set the switch

position back again, thus allowing the procedure to continue, or click the flashing “T” icon to abort

the procedure entirely.

Note that the trainer mode highlights are only visible on the 2D panels. Trainer mode auto-

start/auto-shut down can be used in the 3D virtual cockpit or from an outside view, you just wont

see any of the highlights.