This answer to How is New Shepard the first suborbital booster to successfully perform a powered vertical soft landing? discusses a potential differentiation between Falcon 9's first successful landing and New Shepard's.

Wikipedia's New Shepard begins:

New Shepard is a vertical-takeoff, vertical-landing (VTVL), crew-rated suborbital launch vehicle...

and I assume that includes both the booster and the capsule.

Question: Suppose a roughly capsule shaped payload fairing was put on top and a short 2nd stage based on a spherical SRB was added in an attempt to put a smallsat payload into orbit. Could this work without a substantial redesign of the booster?

This answer to New Shepard payload capacity to orbit? says:

As far as I know, there is no second stage that could reach orbit from a New Shepard, even disregarding the issue of size. It would need to very nearly be a SSTO. The Falcon 9 is well known for staging early, this being part of what makes it feasible to recover its booster, and for ASDS landings its booster is about 150 km downrange and moving at around 2 km/s when it crosses 100 km altitude, where New Shepard reaches a vertical peak at effectively zero velocity.

While it suggests that the payload capacity is low if at all, there are no numbers to support anything definitive, and the maximum horiziontal velocity of New Shephard when fully fueled and with a different second stage isn't addressed there at all.

Answers here should support conclusions with at least envelope-back level calculations. Thanks!

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    $\begingroup$ The first stage of a rocket could be arbitrarily low performance, the upper stages "just" need to have higher performance to compensate, the extreme being a "stage" that's just a launch pad fixture with a fully orbital rocket sitting on top. An upper stage that launched on New Shepard would need to very nearly be SSTO, however. $\endgroup$ – Christopher James Huff Apr 19 at 3:50
  • $\begingroup$ @ChristopherJamesHuff ya that seems to be the crux of the question; comparing the first stage maximum horizontal velocity at say 100 km. It seems to be something like 2200 to 2400 m/s at MECO for F9. $\endgroup$ – uhoh Apr 19 at 3:59
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    $\begingroup$ @OrganicMarble Thanks, I've differentiated this question from that one. $\endgroup$ – uhoh Apr 19 at 4:06
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    $\begingroup$ Do we have good specs on the vanilla New Sheppard? $\endgroup$ – BrendanLuke15 13 hours ago
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    $\begingroup$ @BrendanLuke15 we'll find out'; that's sort-of the reason for asking the question. $\endgroup$ – uhoh 13 hours ago

WEll my answer is yes, it- "could" be done

perhaps adding 2 Solid boosters in a C-Slot configuration on the sides to give it enough power to go sideways

then do the russian/titan hot staging technique with a high altitude/vacuum solid booster designed to burn for a long time to reach orbit and is adjustable as to meet the specific payload requirements

then we need a electron style in-house satellite platform to meet the specific orbital requirements

We then recover the new shepard stage by using leftover thrust from the side boosters to slow us down to a point where the shepherd's engines can kick in and slow the stage to a speed where parachutes can be used and either a helicopter or drone ship catches it

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    $\begingroup$ What's a "C-Slot configuration"? $\endgroup$ – Organic Marble 17 hours ago
  • $\begingroup$ My question specifies "... without a substantial redesign of the booster?" Of course a suborbital rocket might reach orbit by "perhaps adding... solid boosters" that's kind-of obvious as long as we include the magic "perhaps" but my question asks about an unmodified New Shepard. $\endgroup$ – uhoh 13 hours ago

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