Differential Throttle - Any mod?

[MaximumThrust]

This is something that I wanted in many occasions.

Let's say I have a rocket with a simple asparagus configuration, with one central tank, and two side tanks. On the central tank I have an engine with great Isp, and on the side tanks, engines with less Isp. When I throttle down, I want the side engines to throttle down first, with the central one at maximum (because it is more efficient). It would only start throttling down after the side ones are at 0.

Another example: Energia-Like Rockets, with a central core using LH2 and the side boosters using LF (without fuel-crossfeed) . When throttling down, I want the core to throttle down first, like the side boosters where SRBs.

One more example: Ion hovers/hoppers using Near Future Propulsion. I make clusters with different engines. I want the more efficient ones to throttle up first, only turning on the less efficient (and more powerful) ones after the more efficient have reached maximum capacity. 

I guess it is possible to understand what I mean.

So, is there any mod that do this, out in the wild?  

[Black-Two-]

Not sure, but my guess would be no. You can do this in kOS yourself though, and presumably in kRPC as well.

[Barar]

This is the closest mod I can think of that does what you want. You can assign a throttle control to each engine or a group and adjust as needed.

It is a part you attach to your vehicle in VAB/MAB called a Differential Thrust Module.

 

[MaximumThrust]

1 hour ago, Barar said:

This is the closest mod I can think of that does what you want. You can assign a throttle control to each engine or a group and adjust as needed.

It is a part you attach to your vehicle in VAB/MAB called a Differential Thrust Module.

 

Seems to be very interesting and with great potential to be exactly what I'm looking.  Also seems to be a little complex, I'll take a more in-depth look and test later. Thanks!