Definition of orthogonal....

[fhobart]

Question: In regards to frame design/configuration, the word orthogonal is used. My team has an interesting concept, but we are looking for clarification of the term (as used by FIRST.)

[MrForbes]

Can you tell us what specific rule(s) you're referring too? might help us help you more quickly

[fhobart]

Section 8 R011 rule update is where the orthogonal reference appears.

[James Tonthat]

Hmm, now that you mention it, it is interesting. Orthogonal just means it's perpendicular to the two other vectors, if you made a robot that was say a parallelpipid but the only issue I see is that it has to be self supporting when it's being measured.

It was also in team update #1 if anyone wants to quick reference it.

Fake edit: Rereading the section, the box right after it says "Dimension 3 (vertical): 60 inches" this kinda gives up the possibility of a half flop robot.

Basically, the 28", 38", and 60" are all orthogonal dimensions with the 60" being a normal vector to the playing surface.

[MrForbes]

"At the start of, and during, the MATCH the ROBOT shall fit within the
orthogonal dimensions listed below: "

That means that the dimensions are orthognal, the 28" x 38" x 60" space that the robot must fit into, is a right rectangular prism. That does not necessarily imply that the robot itself must be orthognal.

Of course you are encouraged to ask on the official Q&A to make sure! Perhaps you could ask if robot shapes other than rectangles are allowed.

[BRAVESaj25bd8]

Mathematically:
Orthogonal is a term meaning that a line and a plane are perpendicular. The special name orthogonal is given so people immediately known in three space.

FIRST-ly:
The rule basically means that if a box is created of dimensions 28x38x60, your robot should be able to fit inside of this box. If your robot has an origin point, then there are x, y, and z directions from that point. Those vectors create planes which the third vector in the set is orthogonal to. Basically, fit your robot in a box that size. Hope that was helpful!

[fhobart]

I am assuming you're referring to the official FIRST q&a?

Thanks for your clarification.

[James Tonthat]

I think we're refering to math.

[MrForbes]

Originally Posted by fhobart

I am assuming you're referring to the official FIRST q&a?

Yes, I am.

[fhobart]

You've answered my question. Thank you everyone.