Quote from: JimO on 11/17/2016 07:31 pmWhy did NASA PAO say the third stage had a single engine?It's been that way for all Soyuz third stages. They have what appears to be four engines, but it IS a single engine with four nozzles connected to four thrust chambers.
Why did NASA PAO say the third stage had a single engine?
Quote from: ZachS09 on 11/17/2016 07:43 pmQuote from: JimO on 11/17/2016 07:31 pmWhy did NASA PAO say the third stage had a single engine?It's been that way for all Soyuz third stages. They have what appears to be four engines, but it IS a single engine with four nozzles connected to four thrust chambers.Thanks. Don't they also say at launch there are 20 engines running? Well, we all know how it's built, how it's described can vary, thanks for reminding me.
Quote from: JimO on 11/17/2016 09:22 pmQuote from: ZachS09 on 11/17/2016 07:43 pmQuote from: JimO on 11/17/2016 07:31 pmWhy did NASA PAO say the third stage had a single engine?It's been that way for all Soyuz third stages. They have what appears to be four engines, but it IS a single engine with four nozzles connected to four thrust chambers.Thanks. Don't they also say at launch there are 20 engines running? Well, we all know how it's built, how it's described can vary, thanks for reminding me.Like I said, it looks like twenty engines are ignited at liftoff, but really, it's five engines with four thrust chambers/nozzles each. So, in conclusion, "they" are wrong.