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The Engines That Came In From The Cold - And how The NK-33/RD-180 Came To The USA

Matthew Travis
Documentaries
YouTube
2 HN users recommended this documentary2 months2014–2021 score 2
Years with an HN recommendation, 2007–2026

HN recommends it as a fascinating history of Soviet staged-combustion engines and why they stayed in use in American rockets.

A Channel 4 Equinox documentary on the NK-33 engines built for the Soviet N1 moon rocket and how they ended up in the USA. It includes rare footage and interviews with veterans of the early Soviet space program.

“There's a cool documentary called "The Engines That Came In From The Cold" (available on youtube[1])” (HN, 2021)

2 recommendations · 2 citations · Documentaries

4 Hacker News comments

From the HN archive; up to 20 kept per video, favoring different commenters. Recommendations first.

@cartoonworld Jun 2021 Recommends
on HN thread U.S. senators propose 25% tax credit for semiconductor manufacturing
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Its interesting to me that while in the US, we were spearheading the computer revolution with our cutting edge semiconductor industry, Soviet rocket designs remain pretty much unsurpassed to this day.[0] There's a cool documentary called "The Engines That Came In From The Cold" (available on youtube[1]) and if you have a Netflix subscription, I recommend the documentary "Cosmodrome" (2008)[2] which is about the history of the Soviet space program and these engines. I'm sure you're aware that the US Space program has been reliant on ex-Soviet heavy lift vehicles for decades more or less. Especially, since the Space Shuttle program was canned, if it weren't for SpaceX, the Russian lift would be the only bus on the route, aside from NRO launches and other um..stuff Indeed, the Soviets had a completely parallel semiconductor and electronics industry as well. I don't know for certain but it was undoubtedly lagging western developments by a large margin. Nonetheless, the Soviets had some very interesting developments of their own, such as the Kola superdeep borehole. It is all terribly fascinating. [0] [link] [1] [this video] [2] [link]
Cool documentary about Soviet engines that remain unsurpassed.

Citations, criticism and jokes

@hindsightbias Oct 2014 Cites it
on HN thread Antares rocket explosion: The question of using decades-old Soviet engines
The NK-33 may be old, but it offers equal or superior performance to anything made in the US. Another engine, the RD-180 is used in the Atlas. US industries have the rights to manufacture, but want $800M and 4 years to build it or create a new engine. That tells you the state of US tech. [link] Video on Russian/Ukranian engines: [this video]
Video on Russian and Ukrainian rocket engines.
@jcun4128 Aug 2020 Cites it
on HN thread SpaceX test flight of Starship SN-5 [video]
yeah that's possible those are the ones, I just remember seeing some documentary about finding these Russian rocket engines that were hidden away to protect them from being destroyed I think edit: oh it's NK33/RD180 [0] [0] [this video]
Documentary about finding hidden Russian rocket engines.

Video list and Hacker News comment labels from HackerTube (prompted by @karpathy), released under ODC-By 1.0, built on the open-index/hacker-news archive. Hacker News data is provided by Y Combinator; comments remain the work of their authors. Video titles, channel names and thumbnails belong to their creators and are shown via YouTube. HackerTube Watch is an unofficial edition. Data export of 2026-10-31.

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