lirg03

It looks very top heavy to me. Add a few fins at the back of the rocket and try again.

@RoverDude, After watching Das's stream yesterday, I kept wondering if we will get something like a stock radiator in the future? Using solar panels feels 'wrong' and unfinished for me.

I'm quite curious about how to complete level 3 in 1.0, since at that low altitude, almost all engines have crappy TWR...

Hi Ziv, Thank you very much for your time reviewing my mission! It was fun to plan and fly such a challenging mission. The Jool-5 Challenge is one of the best managed challenges of all

Seldom for me so far...

I have a SSTO using MK3 cargo bay, and in a test flight it lifted an orange tank with 1.25m probe core, batteries and solar panels to 100km orbit as a self sustaining fuel depot. Although it looks no where close to a shuttle (do I get extra credits for innovative idea? ). Due to an extra crew cabin and inline docking port in the cargo bay, right now it can't fit an orange tank + 2.5m RCS tank. I may change it a bit, and fly it again, to a more than 120km orbit.

It is possible to do that. But you have to first assign your old station as 'ship' or 'probe', and your new module as 'station'. When they docked together, the 'ship or 'probe' will be a part of your new 'station'.

Hi Ziv, I'm wondering my grand tour mission count as completion for Jool-5 challenge? It was done in 0.25 sandbox mode with a single launch. In the album I uploaded 100+ screenshots, but I have more (with data) if you would like to check.

I guess Eve is a good place for New Year's Eve

Radial air intakes are very inefficient for SSTOs. Ram air intakes and shock cone air intakes are much better choice. And in my experience, you need more than one of those for each engine. Use a couple of radial intakes to boost up initial intake air reserve. Also like others said, if the angle of attack is too large, air intakes reduce their efficiency.

In my experience, if the two orbits looks almost on top of each other in map view, that is close enough for any satellite contract. 'Staying stable' is just no control inputs for 10 seconds.

Question, how to post imgur albums like this? Does it require to set the album in a certain layout?

-How much delta-V should a lander have to be able to land anywhere on the planet and return to Kerbin? This is probably the most important. I often use this pic http://wiki.kerbalspaceprogram.com/wiki/File:KerbinDeltaVMap.png as a reference of how much dV I need for a particular lander. If you plan to design a dockable lander that will be separated from mothership, land, and fly back to dock with the mothership, then I think a lander with parachutes with 1600~2000 m/s dV should be enough. -How low should I aim to aerobrake? This http://alterbaron.github.io/ksp_aerocalc/ should help you to plan aerobraking maneuvers. -At what speed should I be entering Duna's SOI? Sometimes I seem to come in at around 1km/s or less, and sometimes it's upwards of 3km/s. Why? That depends on how you do the interplanetary transfer. With the above calculator, it will be easier to setup aerobraking even if you are coming in with different speeds. -What is the usefulness of drogue chutes? I know to use them in conjunction with engines, but they don't even seem to deploy until a ridiculously low altitude. Parachutes and drogue chutes have a min atmo density for partially opening. They will fully open 500m and 2500m above surface with default setting respectively. Duna atmosphere is very thin, so you may approaching ground very fast before the chutes open. Try to aim for 'valley' for better result. -Anything important I'm missing? Usually I wait for KAC's transfer window, adjust so the periapsis is about 11km, and land wherever I end up. Usually I don't have enough delta-V to return. KAC's transfer window is usually good enough that you don't need too much more dV than the 'optimal' ones. http://alexmoon.github.io/ksp/ gives much better transfer windows.

Yes, the above pic is from 0.25. But I don't expect the behavior of parachutes on Duna suddenly change in 0.90.

I have landed on Duna in 0.25, and the parachutes did work as intended. Proof: