tech_op2000

I'll second the comments on the Mk2 Lander Can doors not working anymore.

KSP 1.10 Bug: I cannot place a portable container on a kerbal's back. The way I used to do it was opening the kerbal's inventory, then holding G and dragging the container into the kerbal's inventory. This causes the container to show in the kerbals inventory but just fall on the ground. Mod version: 1.25

I really miss the thrust compensating plugin edit: that needs to come back, or a plugin that gimbals engines to zero out the control inputs so that when you make a change the ship doesn't spin wildly out of control. p.s. - although I'm not thrilled about the shuttle, I love the Shuttle engines! They make it easy to build Shuttles with B9 and KW rocketry parts!

With a quarter to half fuel left on-board it flies and lands great. on empty it is a bit nose heavy and doesn't have much up control authority, but it can still land ok. My frustration is just getting into a flight attitude on re-entry. I want to do a high alpha re-entry but the physics won't allow that.

bummer. Well Im testing re-entry with the new model soon. At least it will give you something to chew on. I still think that CoP curve for the Fuselage is pretty extreme.

Well, I think I found the problem courtesy of NASA. The answer is that the actual shuttle has a similar problem . http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19940006365_1994006365.pdf Refer to page 5 on Center of Pressure. They used a body flap that deflected downward at the back. I am testing this design now. And the most humorous part of the whole thing... they had problems too!

Tests at Mach 5 yield very similar results. My question is this, Why does it have such a severe pitching moment for the fuselage. And for that matter for the whole craft? I want it to resemble the Space shuttle, so shouldn't using a similar wing design work?

actually the really important question here is: "Is that the Death Star up there?"

And finally, for just the Wing:

Here is some extra info that might help illuminate the problem. Check out the CM for the Fuselage only! That is a nasty curve!

You are right about it compensating. This is normal for aircraft. The important part however is that it flies great in normal attitudes. The point of the exercise was to show stall characteristics. If it were performing normally then the attitude would continue to increase until it stalled, then would drop because of assistance from aerodynamic forces( CoP behind CG) but that is not the case for this strange flyer.

Well, this thread is getting long! Alright, Lets see if you can help me out. I am building a space shuttle right now and have hit a barrier. The normal flight characteristics are great... until it approaches stall. Which is a problem for high AOA re-entry! My best guess is that the COP(center of pressure) is moving forward to the extreme. I know that it moves forward in reality, but it seems to be moving forward an unreasonable amount. So, Here is the current shuttle: The Static COP is perfect and in fast flight it is quite stable and maneuverable. Unfortunately I can't show images of the COP moving( A Data line in "Flight Data" for COP would be fantastic! BTW), so here is the flight data as AOA increases. From Minor stall onward it is impossible to nose forward. A classic symptom of aft CG or in this case forward COP From this point on it actually starts flying backwards, and does so quite well unfortunately. Here is some info that might help: I am guessing that the fuselage is not stalling as deeply as the wing, which in turn gives the fuselage(which sticks forward much more than back) much more lift comparatively. It then has a very far forward CoP. In reality shouldn't it pitch forward from a 90 deg AoA since there is more surface area aft of the CG? Side Note: yes I can fix this issue by moving the wings back, but the normal flight characteristics suffer to significantly. I have done tests with canards and varying aspect ratio wings. the equation however still seems to be factoring the fuselage for aspect ratio so it still stays near 1.