What launch angle have you guys found works well for midfield to close range shots? My team will test ourselves but I am creating a CAD and just need like a rough angle to base my CAD off until my school starts the vex club. I am thinking around 20 degrees but what do you guys find worked well?
I don’t know the exact math behind it, but rumor going around is that 35 degrees gets you the best angle to consistently hit the goal. I believe there is a paper on frisbee physics that outlines this. I’ll do some research to get it and edit it into this post.
Edit 1: I’m going to have to dig, and obviously there are a lot of factors going into it like Paradox-E said. 35 or 36 degrees is the most common one I have seen, but that can vary by a few degrees depending on how high you put your flywheel.
I recommend using this desmos graph to find the flight path of a disc in the air.
Spin Up Launch Analysis (desmos.com)
You can adjust the height(h), velocity(v), and angle(a). The angle is in radians. I believe a normal 3000rpm flywheel should shoot at about 8-10 meters per second. For more information, check out this post. Spin Up Kinematics Graphing Tool.
Generally, I would recommend a 20-40 degree angle though.
That’s what I suspected. I’ll check out the graphing tool too! We’ll do testing to see what works best but this helps for our rough CAD. Thank you guys so much!
A higher angle tends to be better if you want to pack the goal full; our 50 degree shooter (where 0 degrees is parallel to the ground) has been pretty successful in testing.
However, this would force you to constantly readjust the flywheel speed for shots at longer ranges. You can fill the goal, but it won’t be as efficient, in my opinion. However, if you have some way to track distance from the goal, a high angle will certainly be beneficial.
We just use our eyes to look at where the robot is
Calculations? I suppose you could use an estimate and have different speeds for different zones of the field.
Since we want to stuff the goal, though, we’ll really only be shooting from close range the whole match. No calculations or equations needed.
Makes sense. Everyone has different strategies.