KerbalX

Details

• Type: VAB
• Class: ship
• Part Count: 227
• Pure Stock
• KSP: 1.12.5

Description

Version 6.2: Updated to KSP 1.12.5, removed flower shield with inflatable shield due to inflatable shield being downgraded on the tech tree.

For exploring BOTH Ike and Duna in a single mission. Can bring and return seven Kerbals. Requires orbital rendezvous. Comes with its own booster for getting it into orbit. Comes with an autonomous Orbital Propulsion Module for getting it to Ike/Duna low orbit, acting as a relay and for rendezvous, refueling and transfer from Ike to Duna and back to Kerbin. Orbital rendezvous and refueling of lander from OPM gives improved propellant margins over Dunar 4.1

• No Tech Level 8 or 9 Parts.
• Comes with dockable Inflatable Heatshield that can withstand re-entry at over 5 km/s.
• Remove inter-stage between rover and OPM while in Kerbin orbit and re-arrange to save a few m/s in delta-V to Duna. Core Booster can get you to Duna transfer either way, use OPM in Duna space and for return to Kerbin.
• Detach the lab and rover when taking off from Duna, lab and rover can only be re-used on Ike first.
• Enough cargo science for 4 science stations, two on Ike and two on Duna.

Recommended Flight Procedure
1. Take off and stage each booster when completed, ideally have it on its core booster by the time it reaches a projected apogee of 80 km. Discard fairing and escape tower above 50 km.
2. Use core stage to circularized orbit at 80 km, enough fuel should be present in core stage to enter a a Duna transfer orbit of <1200 m/s delta-v. Obviously you need to do so at an appropriate transfer window.
3. Before burning for Duna it is recommended to removed interstage between rover and inflatable shield, detach OPM and Dunar 6 at docking port, spin the Dunar 6 around, eject the interstage and docked Dunar 6 to the OPM, control from OPM docking port or OPM probe box.
4. Once reaching Duna, burn very close to Duna to enter a highly elliptical equatorial orbit, chose an apoptosis such that intersecting with Ike is assured within a few or less orbits.
5. Enter orbit about Ike, ideally 50 km circular equatorial orbit.
6. Detach Dunar 6 from OPM and land it on Ike with a landing velocity below 5 m/s, land with solar panel able to track sun from dawn to dusk.
7. Collect and research science, place up to two science station kit from the science cargo bays, detach the rover and explore biomes, rover can be reattached by driving it under Dunar 6 and then quickly raising and lower the landing gear or reducing the landing gears spring strength. Stay on Ike for many months.
8. Take off from Ike without staging any parts and rendezvous with OPM, refuel the pylon engines using OPM fuel, return command direction to OPM and turn off pylon engines, use OPM to leave Ike orbit and enter Duna orbit, ideally circular at above 100 km.
9. Detach Dunar 6 and reduce periapsis to ~30 km above where you want to land, ideally someplace below 3 km altitude, enter Duna atmosphere in prograde position, open first chutes at 5 km above surface, it should flip over to retrograde position, open second chute then. Use pylon engines in final seconds to slow to below 5 m/s landing velocity.
10. Collected and research science, place two science station kit from the science cargo bays, detach the rover and explore biomes. Stay on Duna for many months.
11. Transfer science to command stage, detach command stage from Dunar 6 lab and rover, take off and return to Duna orbit of >60 km circular, dock with OPM and transfer remaining fuel from pylons to OPM and then detach the pylons.
12. Use OPM to enter a transfer orbit back to Kerbin of 600~800 m/s, obviously you need to do so at an appropriate transfer window.
13. Once reaching Kerbin, set to collide at 20~30 km periapsis altitude, detach inflatable shield from OPM before entering atmosphere, have command module enter atmosphere in prograde orientation, after re-entry burn open parachutes and land.

A stock rocket called Dunar 6.2. Built with 227 of the finest parts, its root part is crewCabin. Built in the VAB in KSP version 1.12.5.