original question: Find Bipropellant rocket engine, with a status of [flown], whose thrust (sea level) is more than or equal to [2.9e+06].
answer: rd-180, rd-170, rd-171...
answer type: Bipropellant rocket engine.
What is the name of the bipropellant rocket engine that has a status of [flown] with a thrust [sea level] more than or equal to [2.9e+06]?