On Tue, Nov 12, 2013 at 2:51 PM, Alexander Mikhailov <avmich@xxxxxxxxx>wrote: > .... > And one more thing - it's strange to hear that US, with the tradition > of using pintle injectors, have more optimal combustion process, while > Russian injectors commonly have many much smaller injectors, matched > by flow. Pintle should have other advantages, I guess... The US pintle engines were mostly involved with the Lunar Module descent engine (LMDE) and its derivatives (which ended up in the TR201 which was classic Delta's second stage engine), Nearly all flown US engines are classic injectors. -- -george william herbert george.herbert@xxxxxxxxx