what is the development update of the rocket engine that has an isp (sea level) that is no more than 210.0 and is designed by npo energomash?
(AND spaceflight.rocket_engine_status (JOIN (R spaceflight.rocket_engine.status) (AND (JOIN (R spaceflight.rocket_engine_designer.rocket_engines) m.02p_3s6) (le spaceflight.rocket_engine.isp_sea_level 210.0^^http://www.w3.org/2001/XMLSchema#float))))