This analysis covers the aftermath of the Soyuz MS-28 launch from Baikonur Cosmodrome, where the launch pad's mobile "service cabin" was destroyed. The cabin, essential for ground crew access to the rocket's base for connecting umbilicals and pyrotechnic igniters, was found wrecked in the flame trench.
The likely cause of the incident is the Venturi effect from the rocket exhaust, which created a low-pressure zone that pulled the improperly secured cabin out of its protective alcove. This failure renders the pad—Russia's only facility capable of launching crewed Soyuz and Progress cargo vehicles to the International Space Station—inoperable.
An evaluation of alternative Soyuz launch sites reveals none are viable for ISS missions. Plesetsk is at the wrong latitude, the pad at Kourou is no longer available, and Vostochny, while close in latitude, is unsuitable due to the Soyuz rocket's limited guidance capabilities and, critically, its unsafe recovery zones for crewed aborts. Russia now faces a significant logistical problem, forced to either repair the pad in Kazakhstan or attempt a complex modification of Vostochny for cargo-only launches, creating uncertainty for its future participation in the ISS.
The Soyuz Launchpad Failure and its Consequences
0:00 Launchpad Damaged: Following the Soyuz MS-28 launch to the ISS, drone footage revealed that the launchpad's "service cabin" was destroyed after falling into the flame pit at the Baikonur Cosmodrome.
1:15 Critical Infrastructure: The service cabin is a mobile platform that allows ground crews to get underneath the rocket to connect umbilicals and place the large, wood-framed pyrotechnic devices used to ignite the engines. Without it, the rocket cannot be prepared for launch.
2:26 Baikonur is Russia's Only Option for ISS: This specific pad is the only one in the world equipped and located correctly to launch crewed Soyuz and Progress cargo missions to the International Space Station.
3:38 Alternative Sites Are Unsuitable: Other Soyuz launch sites cannot be used for ISS missions.
Plesetsk: Too far north; cannot reach the ISS's 51.6-degree orbital inclination.
Kourou, French Guiana: The pad is no longer operated by Russia and is being repurposed.
Vostochny: Close in latitude, but the Soyuz rocket lacks the guidance capability to correct the cross-range difference. More importantly, the flight path is over hazardous mountainous and forested terrain, making it unsafe for crew abort and recovery operations, unlike the flat steppes of Kazakhstan.
10:36 Likely Cause of Failure: The incident was probably caused by the Venturi effect. The high-velocity rocket exhaust created a low-pressure zone in the flame pit, which sucked the improperly secured service cabin out of its storage niche.
11:49 Immediate Logistical Crisis: Russia cannot launch its scheduled Progress cargo mission or future crew rotations until the pad is fixed. This could take months or longer.
14:42 A Difficult Strategic Choice: Russia must decide whether to invest in repairing the pad in Kazakhstan, a country it wants to reduce its dependence on, or undertake a complex and expensive modification of the Vostochny site for cargo-only missions.
16:01 Beginning of the End?: While the speaker believes Russia is stuck using Baikonur for crewed ISS flights for the next few years, this incident will likely accelerate the long-term strategic shift to its own Vostochny Cosmodrome.