Parts list can be sorted by size, cost, mass and name (default).Custom filters and subcategories can be created and edited for user-made collections of parts.Added part filters which list them based on the resources they contain/use, their manufacturers, the modules (functionalities) they implement or their corresponding tier on the technology tree.Split Propulsion category into Engines and Fuel Tanks.Existing categories overhauled into 'By Function' Filter.Added Filters system to allow new methods to find parts, apart from the existing category tabs.W A S D Q E keys still work to rotate in 90° or 5° ( ⇧ Shift) increments, and are now more consistent with pitch, yaw and roll rotations.Holding shift during placement or while gizmos are up will decrease angle snap interval to 5° (from 15°) and grid snap interval (for offset gizmo).Gizmo snap can be toggled to constrain to an absolute grid or a local one depending on coordinate frame.Rotation and offset gizmos can also snap to angles and to a 3D grid.Gizmo coordinate system can be toggled between absolute and local with the F key.Added re- root tool to editors ( 4 key).Added offset and rotation gizmos to editors ( 2 and 3 keys).1.11 New Contracts ( Fine Print Mod by Arsonide).1.4 Upgradeable Space Center Facilities.Re-entry heating is now modeled, although it isn't great.A number of effects aren't really modeled, but can be included with mods (Communication delay, rocket fuel settling, etc).Reaction wheels aren't modeled properly (Can do with a mod, but.).The aerodynamics model doesn't model well things like breaking the sound barrier.However, there are plenty of multi-object systems which aren't managed at all correctly Lagrange points aren't taken into account, for instance. It might even do something like a Hill sphere. Only one body affects an orbiting object, the object of most influence.It doesn't model everything perfectly, but is pretty good overall. The new Aerodynamic's model is pretty good.Structural stability is pretty accurate, at least modeling the key components.The use of fuel, acceleration, mass, etc.The orbit simulation is quite accurate, including how to change inclination, raise/lower orbits, leave a planet, and approach a new planet.Let me try and give a list (which might be a bit out of date): It manages a few things quite well, and a few things not as well. Kerbal Space Program is somewhat of a medium fidelity simulation.

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