Sikorsky R-4 Helicopter

OHM Sikorsky R-4 Helicopter 2

I don't think Orbiter even has air temperature... Ah well...
An air temperature gauge would be trivial to do, but it doesn't add much to the experience.

Understand that the pros at FSX have mountains of money, teams of developers, and access to aircraft data that we don't have access to. They can develop their models to such an extent that they can be used as faithful system simulators.

Trying to get system temperatures that are realistic, meaningful, and match real world data is extremely hard to do from base principles. I did this professionally in thermal power plants for many years. Any subsystem temperature models in Orbiter are either going to be a quick and dirty approximation or an outright fabricated number generator.

I coded basic thermodynamic models of the engines that do a reasonable job of estimating the engine power. But without much better information, I really have no interest trying to spend mountains of effort making something practically guaranteed to be wrong, unless you want to discuss my consulting rates and have cash to burn.
 
The Orbiter manual (in 2016) says in Surface MFD, OAT is outside air temperature in K, if that helps.
Orbiter does model the standard Earth atmosphere with pressure, temperature, and density as a function of altitude, and you can get them all in code. vi:get_atmpressure(), vi:get_atmtemperature(), vi:get_atmdensity(). These are the Lua commands and there are C++ API equivalents.
 
Thunder Chicken updated Sikorsky R-4 Helicopter with a new update entry:

New R-4 Helicopter Addon With Option for Floats and Color!

This update contains several new features and improvements including:
  • The R-4 can be equipped with either landing gear wheels as in the original addon, or they can be replaced with floats for amphibious operations. Whether wheels or floats are installed is controlled by setting the 'floats' parameter in the scenario file to true or false.
  • The touchdown points of the floats will adjust depending on whether you land on terrain above sea level or at sea level. Above sea level, the...

Read the rest of this update entry...
 
How to get the screen to display the help commands? like E is Engine,.....
I think you should press I.

C++:
if(key == OAPI_KEY_I && down){

        if(show_help == false){

            show_help = true;

        } else if(show_help == true){

            show_help = false;

        }

        info_switched = true;

    }
 
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