(section: 3 / paragraph: 1 / line: 3)
Because the event will be pen and paper, only printouts (or screenshots) of DS9 will be used. As a result, teams do not have to have DS9 on their computers to compete. Instead, if you cannot download DS9 simply use JS9 (the online tool) to practice for the competition. What is tested instead is students familiarity with the programs output and how to analyze/interpret that output. So however you get it to run on your personal, school, or library computers (and whichever version you use) is really a fine way to gain that understanding.
(section: 3 / paragraph: b. / sub-paragraph: iv. / line: 2)
Students should be familiar with all three. If used for the National competition the national supervisor will specify which is being used. We have chosen to define the Simpson index, p as the proportion (n/N) of individuals of one particular species found (n) divided by the total number of individuals found (N), Σ is still the sum of the calculations, and s is the number of species. This information can be found on the files distributed at coaches clinics and will also be on the SO website once the clinics are over.
(section: 1 / line: 1)
Commercial kits may be used, as long as the SO building policy is followed: https://www.soinc.org/building_tools_policy
(section: 2, 3 / paragraph: 5, 6 / sub-paragraph: f, b / line: 1,1)
5.f. doesn't identify the target time for C only. It only mentions that the target length will be announced for Div. C only (since Div. B already knows the target length). The target time concept applies to both B and C. The reference to Div C is for the variable length that must be announced.
(section: 4 / paragraph: b / line: 1-2)
The maximum dimension of the skirt is the same as the device, 19.5 cm wide x 30 cm long, both inflated and deflated. Students may tuck the uninflated skirt under the device prior to inflation.
(section: 4 / paragraph: e / line: 1)
The propeller(s) must be enclosed in such a way that there are no holes bigger than 1/4" in diameter in the enclosure. A 1/4" dowel rod must not be able to penetrate the material.
(section: 4 / paragraph: g / line: 1)
The dowel can be any material, but by definition a dowel is a solid cylindrical rod, hence a straw is not allowed.
(section: 4 / paragraph: h / line: 1)
Yes, this would be allowed.
Yes, multiple batteries may be used as long as they are not connected in such a way that the voltage exceeds 9 V in any circuit. Separate 9 V circuits are allowed.
(section: 4 / paragraph: i / line: 1)
No. A breadboard with discrete resistors and/or basic transformers is not an integrated circuit. Note though that some types of resistors and transformers ARE integrated circuits and hence are not allowed.
No. As long as it is a fan typically used for cooling electronics or computers it does not need to be labeled as such.
Yes, an Arduino contains many integrated circuits and is not legal.
(section: 4 / paragraph: i / sub-paragraph: n/a / line: 1)
An integrated circuit is a circuit in which all or some of the circuit elements are inseparably associated and electrically interconnected so that it is considered to be indivisible for the purposes of construction and commerce. Most resistors and capacitors are not integrated circuits. Nearly all transistors and op-amps are integrated circuits.
(section: 4 / paragraph: i / sub-paragraph: N/A / line: 1)
It depends on the specific switch. Some switches are purely mechanical (i.e. utilize a potentiometer) and are allowed. Others are digital (i.e. utilize an integrated circuit) and are not allowed.
(section: 4 / paragraph: j / line: 1)
Yes because it is not hovering unless air is coming out. The air must have some way of escaping (i.e. it should need to be actively replenished for the device to work, not just be a sealed inflatable chamber).
(section: 4 / paragraph: j / line: 4)
There is no set distance it must hover. If an event supervisor, from a normal observation point without having to get up and close to the hovercraft, can visually see it move down when pushed, then yes it levitates.
(section: 4 / paragraph: k / line: 1)
No, as any remote control system would violate either the dimension requirements or the prohibition on integrated circuits.
(section: 5 / paragraph: f / sub-paragraph: N/A / line: 1)
(section: Constr / paragraph: i / line: 1)
Note there is an official rules clarification related to this, available at: https://www.soinc.org/official_rules_clarif The integrated circuit prohibition refers to all components (including voltage regulators / arduinos) other than those specified in the rules clarification.
(section: 3 / paragraph: f / line: 2)
No, that would not be considered a lifting surface. To be considered a lifting surface, it must contribute lift to the overall flying assembly. An easy way to demonstrate that would be to demonstrate flying it with and without the surface, if the surface is not present then the flight would be significantly different.
(section: 2 / paragraph: c / line: 1)
No, the voltage across any two points ≤ 9 V as stated by the manufacturer labels. If a step-up regulator steps a 9V battery up to 12V, this would be a violation.
(section: 2 / paragraph: g / line: 1-2)
The "leading part of the vehicle" is the forward-most part in the direction of the vehicle's travel.
(section: 5 / paragraph: j / line: 1)
No. The rule is clear. ...please see rule 5.g.
(section: 5 / paragraph: b / sub-paragraph: v / line: 1)
The Load Scored Bonus is awarded only if the tower is outside of the 29.0 cm diameter circle through the entire testing. If the tower sags inside of the 29.0 cm circle during testing but the bucket remains off the ground and the tower is still outside the 20.0 x 20.0 cm opening on the Test Base, testing will continue until failure occurs as defined in the rules.