In a post on the X-Plane Developer Blog, X-Plane Software Engineer Ben Supnik gave a look at some of the updates due for the simulator.
Speaking about the latest beta release, 11.40, Supnik says this is a “physics release.” All of the changes in this release focus on physics and this update is a departure from the normal release method in that the code in this beta is strictly code from Austin’s work on the physics engine. This allows the developers to focus on debugging one set of code, instead of multiple sets and then trying to figure out which set of code the bug exists in. So far Supnik says this method is working.
While this method of release is working, there are still bugs that are popping up – mostly in the area of NaNs (Not A Number) in the flight model. It appears that Austin has fixed one of the two root causes of this error, but the team will need to keep chasing the bugs until the other root cause is fixed. This will mean a high occurrence of beta releases over the next little while.