KerbalX

This SSTO can be launched straight from the KSC runway to Eve low orbit

Description

The Ultimate Crown Jewel of KSP engineering!!!

Elegant, graceful, aerodynamically optimal Single Stage to EVE Orbit

Total vacuum dv is 3600+1485= 5085dv
(TWR of the main stage is 0.60 at 14500m)

Capable of sending one Kerbonaut to EVE low orbit with around 200~100dv left for further maneuvering. (If you really want to send 3 of these little dudes to orbit, optional seats can be placed inside the Mk2 cargo bays, also, adjust the center of mass accordingly)

Details

• Type: SPH
• Class: ship
• Part Count: 78
• Mods: 3
• KSP: 1.12.5

NOTE:

This aircraft is pure stock + DLC, despite KX identifying 1 mod. This appears to be a current bug with KX’s detection of the rotor.02s part -they falsely detect the SSTO Project mod.

Press 1 to get the propellers ready for take off
(Take off speed is as low as 70m/s at sea level)

Press R upon reaching 5000m to adjust fan blades

Point at 20° from sea level to 8000m
Adjust to 10° from 8000m-12000m
The final lift from 12000m-14500m requires a angle of 7.5°-3°

Propeller gets this craft all the way up to 14500m above the Explodium Sea. Therefore, this SSTO can be launched anywhere from the EVE equator! (no more trying to land on and take off from the highest peak)

Press 1 2 simultaneously to switch on the main stage and shut off the propellers.

Accelerate at an angle about 3°-5°, as soon as the Angle of Attack is 0°, switch to prograde. The SSTO will automatically climb up at 30°.

While the SSTO climbing up, switch the nuclear engines on around 15000m by pressing 3 & 4 .

Adjust the pitch carefully and switch from prograde to stabilize and match the following checkpoints by tapping F.

30° at 30000m
25° at 40000m
20° at 50000m
15° at 60000m

The main stage should just about to shut off and leaves you an AP that is between 85000m-90000m with an orbital velocity above 2500m/s. Stay at the same angle and the nuclear engine will raise the AP further above the atmosphere. (your AP can be anywhere from 92000-110000, the longer you stay above 85000m the better.)

With a tiny TWR, the nuclear stage is a bit tricky. Do not make a maneuver node, but instead, slowly point the craft up. This part might require some quick saving and practicing. You might find that towards the end of the burn, the craft is pointing at 45°-60°.

It is ok to have a PE lower than 90000m if you cannot enter orbit in one burn. As long as the PE is above 80000m, shut off engine and switch to prograde, wait till the AP to burn again.

And then you should find yourself safely in orbit, with at least 150 dv which is enough to get you back into the atmosphere.

To return to the sea level, have another craft to mine from GILLLY and make some fuel for this SSTO, fuel up the tank right next to the crew pod and the two of the four triangle wings. This will ensure you center of mass back to where it should be, allowing a safe descent without flipping out of control an burning up in the atmosphere.

Miscellaneous

Action group 0 activates and deactivates the probe core, allowing unmanned flight to orbit and descent to sea level.

Action group 8 retracts the front wheel or kneeling to allow Kerbonaut climb into the crew pod.

Jeb is trying to get back inside the cockpit!

Please upvote or feel free to leave me some feedbacks in the comment section below! :-)

Eve SSTO is pretty neat, but maybe what you want to do is more than just getting into the low orbit. What about taking off from the KSC and landing on Duna using this SSTO engineered to function in an oxygen rich atmosphere?
https://kerbalx.com/DLQ3987/MK2-SSTO-Spearhead

Keep exploring EVE with this propeller powered seaplane. It will truly let you land anywhere! Now comes with on board ISRU unit too!
https://kerbalx.com/DLQ3987/MK3-Seaplane-Pelican-for-Eve-NO-MOD-NEEDED

Needless to say, this SSTO is only a part of an extensive system of reusable crafts. Refueling of the SSTO can be done using this mobile base! The turbo propellers can push this vehicle up any slope on Eve. Now comes with extra wheels to roam the purple planet!
https://kerbalx.com/DLQ3987/MK3-Mobile-Expeditionary-Base-EVE