PIERCING THE SKY: AETHER II, III, IIIA and IV
Unlike Aether I, getting to the upper atmosphere had its own problems: the original Aether I rocket couldn't get that high, peaking at 14 kilometers with its full science payload: KSES engineers went to the drawing board, and created the Aether II:
What they came up with was effectively two Aether I's stuck on top of one another (not a really good idea, but this was a relatively fresh program): the design was green-lit and set to launch...
...only for the rocket to veer off to the west and crash in the grasslands behind the KSC. All footage of the crash landing has unfortunately been destroyed, although the relatively intact booster lies at the crash site.
Annoyed by this failure, KSES again commisioned a design for their next upper atmospheric mission: the Aether III.
The subsuquent design used a more powerful complement of boosters, such as the 'Flea' SRB, the Aether III had high expectations placed on it: the first launch attempt quickly ended in the rocket flopping around on the launch pad, only being controlled after several minutes of burntime. Another attempt was made after said rocket was quickly refurbished and the staging fixed.
This second attempt got the booster off the ground...
...but only to an altitude of 15 kilometers, 3 off from the intended goal. Some science was scraped before power was lost on the probe, and it was left to descend into the oceans north of the KSC.
The success of Aether III convinced KSES that one more try was needed, and thus Aether IIIA was slated for a couple of days time... and was immediately scrubbed after the probe ran out of power during scientific tests on the pad. Batteries were hastily fitted onto the booster stage, and the launch was tried again, only to fail, again.
Back to the drawing board went the engineers, and armed with new research, the Aether IV was created, a revolutionary liquid fuelled design that took advantage of engine gimbal for stability.
(Although not seen in this image, Aether IV was spinning wildly out of control)
The launch of Aether IV was more stable than usual, and the rocket, well, rocketed up into the sky, obliterating altitude records and passing the Karman Line in the process! With these new capabilities, KSES looks forward to sending a probe into orbit, or maybe... even a Kerbal?