Mini Falcon 9 Makes use of NASA Software program

[T-Zero Systems] has been engaged on his mannequin Falcon 9 rocket for some time now. It is a formidable mannequin, full with thrust vectoring, a microcontroller which follows a predetermined flight plan, a working launch pad, and even legs to aim vertical landings. Throughout his first assessments of his mannequin, although, there have been some points with the management system software program that he wrote so he is again with a brand new system that borrows software program from the House Shuttle.

The primary drawback to unravel is gimbal lock, an issue that arises when two axes of rotation line up throughout flight, inflicting erratic movement. That is particularly troublesome as a result of this mannequin has no capability to regulate roll. Fixing this utilizing quaternion as an alternative of Euler angles entails a variety of math, offered by libraries developed to be used on the House Shuttle, however with the additional effectivity enhancements the brand new software program runs at a a lot quicker price than it did beforehand. Sadly, the brand new software program had a bug which prevented the parachute from opening, which wasn’t found till after launch.

There’s so much happening on this construct behind-the-scenes, too, just like the take a look at rocket motor used for testing the management system, which is definitely two counter-rotating propellers that can be utilized to mannequin the thrust of a motor with out truly lighting something on hearth. There’s additionally a separate video describing a take a look at technique which validates new {hardware} with knowledge from prior launches. And, if you wish to take your mannequin rocketry additional in a unique path, it is all the time doable to make your individual gas as properly.