Dear Mehdi:

You can benefit from this valuable article about your topic:

"The Orbital Maneuvering Vehicle"

The Moog Orbital Maneuvering Vehicle (OMV) is a propulsive tug for secondary payload deployment based on the Moog NSSL Secondary Payload Adapter (ESPA) ring.

##- Why OMV:

The OMV is designed to launch on NSSL-class launch vehicles (Atlas V, Delta IV, Falcon 9) while supporting up to 1500 kg of secondary payloads with a variety of standard separation systems. The OMV can be used to disperse small satellite constellations, act as a Hosted Payload platform, or deliver a single spacecraft to its ideal orbit. The OMV is a modular platform and has its own avionics, power, propulsion, and communications systems that are configurable for short durations up through multiyear missions in a wide range of orbits and transfer capabilities.

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ASTRO:

High Delta-V capability OMV for GTO to GEO (or Beyond) transfers.

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For more information take a look at:

https://www.moog.com/markets/space/omv.html

I hope it will be helpful.....

Best wishes....

Hassan Nasser that was really useful; many thanks.

I found following article in "https://www.moog.com" that might be useful for other researchers too:

"https://www.moog.com/news/operating-group-news/2012/moog-throttle-valves-lessens-seven-minutes-of-terror-for-curiosity.html"

which says: "...For the final descent phase of the mission, Moog produced unique Cavitating venturi valves for the 800 lbf engines that were used to control the descent module.  These valves were developed to provide throttleable thrust for the engines so that Curiosity could be safely lowered onto the surface of Mars...."

Dear Mehdi:

You are welcome ...

Good luck....