# Abastro

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1. ## How many times did you forget to assign kerbals in a spaceship?

I always forget it and ends up with Jeb sitting in there. This is painful in combination with tourist contracts. I even launched a rocket and found out that Jeb is just sitting in there. Alone. Doyou have similar experiences?
2. ## Are Single Large Payloads Always More Efficient Than Multiple Smaller Payloads

This, and bigger fuel tanks are cheaper as well. (Nearly every parts in ksp obey this 'economy of scale'.
3. ## Economic Challenge - Cargo Delivery to LKO (1.2) <WIP>

Should be corrected this time.
4. ## Economic Challenge - Cargo Delivery to LKO (1.2) <WIP>

Oh, sorry. EDIT: Immediately fixed it.

6. ## Economy Challenge 1.2 (Reboot)

That's so economic! Looks great. I thought it'd be better to have as less engines as possible, due to their mass. Now this one teaches me a lesson! Also, I couldn't expect Nerv for LKO Lifter. Thanks! Besides, I'm going to start the new challenge, with the entries given here included. Please take a look on it.
7. ## Relation between Semi-major Axis and Orbital Period

Simple: https://en.m.wikipedia.org/wiki/Kepler's_laws_of_planetary_motion#Third_law Rather tham fiddling with the constants, comparing with the planets/moons works better. (E.g. for Kerbin orbiter, compare with Mun)
8. ## Economy Challenge 1.2 (Reboot)

Yeah, like that, but in much better form! Let me give an example. If there are submissions for 1000 for 0.5t, 1200 for 1t, 1700 for 1.8t, 1600 for 2t, 3000 for 3t, 3500 for 5t, 7500 for 8t, 7000 for 10t, 10000 for 14t, 10000 for 15t 1700 for 1.8t, 7500 for 8t, 10000 for 14t will be excluded on the list because there is a better(cheaper) entry. The rest remains in the list, comprising the cheapest lifters for the region of payload.
9. ## Economy Challenge 1.2 (Reboot)

I'd like to reboot this challenge (or make a similar challenge) in another form. Would it be okay? Roughly, I'll change the scoring system to be based on absolute price per launch for a given payload mass, because bigger craft tends to be cheaper as cost per payload mass. Since most lifters can lift payload lighter than what's intended, it will be reasonable to list lifters which are cheapest choice for its intended payload mass. For instance, 1000 for 0.5t, 1200 for 1t, 1600 for 2t, 3000 for 3t, 3500 for 5t can be listed. And 1700 for 1.8t can't be listed here, since it is cheaper to 2t lifter with 1600 to lift 1.8t As spaceplanes are inevitably the best in efficiency while being time-intensive, there will be three categories: I, II(Vertical Launch+Reusable), III(Spaceplanes). How do you think?
10. ## What did you do in KSP today?

For the first time, I got a second stage on the runway! Forgt to take some screenshots of flight before parachute is deployed. Even though it has wings, it flew like a dart. Didn't want to turn, which made this landing so hard. Anyway, it's landed!
11. ## How long do you spend on a build until you're completely happy with it?

Forever, I can't make anything aesthetically fine(or at least not absurd). The best I can get is always a well optimized craft (performance-wise).
12. ## Next generation thermometer bearing/hinge 1.1 compatable

Those are for re-docking, to make it warp-proof while hauling. Primarily to haul it to Eve & Duna. Also it's necessity for SSTO propeller planes.
13. ## Next generation thermometer bearing/hinge 1.1 compatable

I was overestimating the effect. As you said, the small difference in rotation speed doesn't cause too much roll! Though, I found planes with single electric propeller tends to roll even with efficient fairing bearing. It needs at least half of the reaction wheels on the plane to compensate it, decreasing the performance greatly. Maybe friction is not small enough to ignore.
14. ## Economy Challenge 1.2 (Reboot)

Sorry, but the rule doesn't allow 100% recovery for stages detached before reaching stable orbit. It should land in KSC to count as 100% recovery, otherwise it follows the recovery rate of stock career. Looks like Kerbal & Efficient entry, though!
15. ## Economy Challenge 1.2 (Reboot)

Here goes my entry: Lifted 13.42t in 5077. Thus 378.32/t. (Full album & Certification of the cost) In detail, the first stage costs 17110, and recovered 13134. The second stage is returned from orbit, so counts as 100% recovery. The fuel on the stage costs 1101. The payload is command pod, parachute and docking ports with ore tanks, so it can't be crossfed to anywhere. This craft and launch profile is still suboptimal, and there's plenty of dv margin on the second stage. Relatively small, too. Still, this one is the first on IIa category! I'm going to submit an improved entry with my own launch profile. I'm sure that it'll be cheaper, with better recovery!