... S.P. KOROLEV ROCKET AND SPACE CORPORATION ENERGIA . ... OAO RSC "Energia" . ... The L3 system was designed of rocket stages G and D, its Lunar Orbiter (LOK) and rocket stage I, and its lunar vehicle (LK) and rocket stage E, a payload fairing protecting systems from aerodynamic and heat exposure in dense layers of atmosphere that was jettisoned when certain velocity heads have been achieved, as well as an emergency rescue system PU for the Lunar Orbiter descent module escape from the accidental LV. ...