Proton | Luna-18
The Lunar Exploration flight Proton | Luna-18 departed Baikonur Cosmodrome, Republic of Kazakhstan atop a Proton, bound for LO.
- Launch time
- Status
- SUCCESS
- Operator
- Soviet Space Program
- Mission type
- Lunar Exploration
- Rocket
- Proton
- Launch site
- Baikonur Cosmodrome, Republic of Kazakhstan
- Launch pad
- 81/24 (81P)
- Payload
- —
- Target orbit
- LO

Mission timeline
- 1971-09-02T13:40:40.000ZProton roars off the pad at Baikonur Cosmodrome, Republic of Kazakhstan.
- The vehicle reaches Max Q, the highest aerodynamic load of the flight.
- MECO — first-stage propulsion ends after a nominal burn.
- Clean stage separation confirmed.
- The upper-stage engine lights up after separation.
- Orbit insertion confirmed — now circling in LO.
- All mission objectives achieved.