Technology & Engineering

Technology & Engineering

admin Tue, 2008-08-12 08:58

Helicopters

Helicopters

admin Tue, 2008-08-12 08:59

What defines a single bladed rotor? Would a single stick of wood projecting out horizontally from the body be considered a "lifting surface" that "rotates on a common path around a vertical axis"?

What defines a single bladed rotor? Would a single stick of wood projecting out horizontally from the body be considered a "lifting surface" that "rotates on a common path around a vertical axis"?

admin Mon, 2016-11-14 21:21

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.

Robot Arm

Robot Arm

admin Thu, 2009-09-10 15:27

Can the end effectors be completely mobile on their own, without power from the arm. i.e. a small RC car attached to the base via a tether to the base?

Can the end effectors be completely mobile on their own, without power from the arm. i.e. a small RC car attached to the base via a tether to the base?

ceann Sun, 2016-12-18 21:08
No. This would not meet the definition of a robotic arm. Definition (checked in multiple sources) A robot arm is a series of rigid elements linked by rotary or translation joints. The tether is not a rigid link, nor is it a rotary or translational joint.

Towers - Div C

Towers - Div C

admin Thu, 2009-09-10 15:27

For the load scored bonus, the tower must be clear of the 29.0 cm diameter circle. Is this during setup only or also during loading (prior to tower failure)?

For the load scored bonus, the tower must be clear of the 29.0 cm diameter circle. Is this during setup only or also during loading (prior to tower failure)?

admin Thu, 2016-12-01 22:21

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.

Electric Vehicle

Electric Vehicle

admin Tue, 2008-08-12 08:59

Clearly batteries must be less than 9V, but can we use step-up regulator to generate 12 V?

Clearly batteries must be less than 9V, but can we use step-up regulator to generate 12 V?

admin Mon, 2016-11-14 20:22

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.

How is "leading part of the vehicle" defined? Is it the forward-most part in the direction of the vehicle's travel or the closest part to the Target Point?

How is "leading part of the vehicle" defined? Is it the forward-most part in the direction of the vehicle's travel or the closest part to the Target Point?

admin Fri, 2016-11-04 09:06

The "leading part of the vehicle" is the forward-most part in the direction of the vehicle's travel.

Is the vehicle permitted to be propelled backwards outside of the run time (as defined in 5k)?

Is the vehicle permitted to be propelled backwards outside of the run time (as defined in 5k)?

admin Thu, 2016-11-03 17:42

No. The rule is clear. ...please see rule 5.g.

When it says that the vehicle cannot be propelled backward, does that apply to recoil which occurs when a vehicle stops, specifically if the vehicle moves backwards despite the actual propulsion only being forwards?

When it says that the vehicle cannot be propelled backward, does that apply to recoil which occurs when a vehicle stops, specifically if the vehicle moves backwards despite the actual propulsion only being forwards?

ceann Sat, 2017-02-11 15:52
No, the minor recoil when a vehicle stops is not considered backwards propulsion. Ultimately it will be up to the event supervisor to determine if this movement was intentional to gain a benefit to the team.