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The question Astronomical ABCD…! suggests a corollary for SXSE.

I'm looking for one example of a rocket with $n$ first-stage engines, for each $n$ for which you can think of an example for. It should be at least built, or very seriously proposed and investigated at a minimum.

I'll start off with some suggestions, items of recent popularity to get the ball rolling, but you don't have to use them.

Let's first try without jumping immediately to vehicles with variable strap-on number options, and see how that goes?

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  • $\begingroup$ I assume you're talking about first stages of orbital vehicles? $\endgroup$ – JCRM Nov 30 '17 at 11:23
  • $\begingroup$ @JCRM ya, "$n$ first-stage engines" is specified in the question. I'd be surprised if there were any rockets with multi-engined first stages that were not intended for orbit! $\endgroup$ – uhoh Nov 30 '17 at 11:29
  • $\begingroup$ ah, it wasn't there when i started to answer the question. $\endgroup$ – JCRM Nov 30 '17 at 11:34
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    $\begingroup$ @uhoh I can name a few actually, the most notable is the Falcon booster intended for use with the in-flight abort test, which has 3 engines. In any case, this question really is too broad, so... $\endgroup$ – PearsonArtPhoto Nov 30 '17 at 15:39
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    $\begingroup$ For the record, the mods there didn't like it there, they just weren't as fast to close it. I don't really think it belongs there, but I don't really have a say of moderation there. I did ask around, and it's pretty universal, this kind of question isn't really a question, and isn't appropriate for the site. It could possibly do for a meta question, but not on the main site. $\endgroup$ – PearsonArtPhoto Dec 1 '17 at 3:50
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British, very seriously proposed and investigated (and the Black Arrow orbited a satellite after it was cancelled \begin{array} {r l} Black\ Arrow^1&1\ engine\ with\ 8\ combustion\ chambers.\\ Europa^2&2\ rocket\ engines\\ MUSTARD^3&3\ engines\ (one\ in\ each\ of\ the\ triamese\ craft)\\ Interim\ Hotol^4&4\ engines\\ Skylon\ D1^5& 6\ engines\ with\ 12\ combustion\ chambers/nozzles.*\\ \hline The\ BIS\ Space\ Ship (1939)^6& 168\ solid\ motors** \end{array} * two engines per nacelle, two SOMA engines in the tail. All running during the latter parts of the ascent.

** OK, perhaps not so seriously

  1. https://en.wikipedia.org/wiki/Black_Arrow
  2. https://en.wikipedia.org/wiki/Europa_(rocket)
  3. umm...
  4. err...
  5. https://web.archive.org/web/20160328220308/http://www.reactionengines.co.uk/tech_docs/SKYLON_Users_Manual_Rev_2.1.pdf
  6. http://www.bis-space.com/what-we-do/projects/bis-lunar-spaceship
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  • $\begingroup$ Supporting links for each please! $\endgroup$ – uhoh Nov 30 '17 at 11:17
  • $\begingroup$ I'll try to fact check and link those two later $\endgroup$ – JCRM Nov 30 '17 at 12:18
  • $\begingroup$ I know of the russian engines with 4 combustion chambers per engine, counting also the 4 vernier chambers there are 8 alltogether. Did the Black Arrow also use 4 main and 4 vernier chambers? Are there other engines with more than 8 chambers per engine? $\endgroup$ – Uwe Nov 30 '17 at 16:57
  • $\begingroup$ no, Black arrow had eight chambers in a cross. Each pair of chambers pivoted together along the axis of the arm of the cross to provide roll, pitch and yaw control. $\endgroup$ – JCRM Nov 30 '17 at 22:26
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  • $\begingroup$ The never built and flown Nova C-8 as well as the Saturn C-8 with 8 engines for first and second stage. There was a study using 14 F-1 engine for first stage, see. $\endgroup$ – Uwe Nov 30 '17 at 18:03

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