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Questions tagged [nk-33]

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26
votes
3answers
4k views

Does the NK-33 engine require subcooled kerosene so cold that it turns to wax?

It was mentioned in this answer and in several other places on the internet that the kerosene fuel used by NK-33 engines needed to be subcooled enough so that it reached the same density as the LOX, ...
4
votes
1answer
145 views

For how long will the Soyuz 2.1v launcher use the old NK33 engines?

I understand that the Soyuz 2.1v launcher will switch from using the NK33 engine to the new RD-193 when stocks of the former are finished. Does anyone know how many launches, beyond the two so far, ...
1
vote
3answers
1k views

What replacement engine options are there for Antares?

Lots of articles out about how Orbital Sciences is talking with three vendors for a replacement for the NK-33/AJ26 engine pair currently used on the Antares booster. An article on SpaceNews notes ...
3
votes
1answer
1k views

How is an RD-180 engine a reasonable replacement for 2 NK-33/AJ-26 engines on Antares?

Orbital Sciences, which uses 2 Russian NK-33 engines on its Antares booster, has been suing Lockheed Martin/ULA over anti-trust violations, since they were not allowing Orbital to buy RD-180 engines, ...