Searching for Solutions: Search and Rescue Robot Challenge

(Our latest blog article comes courtesy of Joshua in the 10th Grade.  Thanks, Josh!)

In the event of an emergency, robots may be called upon to enter into areas which have been devastated by natural disaster. The thirteen students from the Foundations of Engineering II class split up into four groups to build such robots, and testing came after eight weeks of work and dedication!

The original CAD model of the obstacle course, constructed
over several weeks by our indefatigable teaching assistants,
seniors Josh and Claire

The testing included nine phases (any of which could be skipped) all while carrying a payload. The teams would go through two gates of different sizes, over a gravel pit, up onto platforms of varying heights of 50 and 100 mm, push a block with the mass of one kilogram, go across a chasm, and make their way up a 45° incline. At the end of the run, the robot would be required to drop off the payload. The driver for each team would first do this routine while watching from nearby, and then once again using only a first-person camera view.

Davis gets his team's robot up onto the 50 mm platform with
no worries at all

The first robot to test was the "Trapezoidal Tank”. This robot was built by Nolan, Davis, and Alan. They felt ready for the first trial of the course, but decided to skip the 45° incline. Everything ran smoothly until the payload drop at the very end. They realized something was wrong.

The payload mechanism’s motor came unplugged!

Davis, the driver, thought up an idea. The payload was resting on top of the robot. What if he just flipped the whole robot over? Using the tank’s "tail", he flipped the robot up onto its end and delivered the payload.

Although not able to climb the full 45 degree slope, with a slight
modification the Trapezoidal Tank was make it at 40 degrees

A moment of pure glory! Davis upends the entire robot and performs
the obligatory victory dance!

On the camera-only run, the course was successfully completed again with only one obstacle skipped.

Caleb taking things in his stride, as the long-legged robot effortlessly
clambers over the gravel pit obstacle

Caleb attempts to steer by camera only--
no easy feat! 

Pushing the one-kilogram block away, the package waiting to be
delivered is clearly seen on the right-hand side of the robot

This complex (and squeaky) maneuver involves a series of
high-torque gymnastic activities

Next up was “Daddy Long Legs,” a robot with motorized wheels attached to extended legs. It was built by Caleb, Sydney, and Zach. Caleb, the driver, slowly completed the run, also skipping the very difficult 45° incline. On the camera-only trial, the robot was not able to place the payload in the designated area.

Anaconda brings its bulk to bear on a one-kilogram block of wood

This monster robot leaps 100 mm platforms with
a single bound!

Next was “Anaconda”, built by Sam P., Isaiah, and Pedro. It’s most notable feature? The robot’s tracks could rotate all the way around to point in the opposite direction. Sam P. took the wheel, and on his first run, he only skipped the smaller gate. On the camera-only run, he made it through the same obstacles without any issues.

James steers the Iron Horse through both gates and up onto
the 100 mm platform

Finally, the "Iron Horse” entered. This robot was built by Sam K., James, Joshua, and Kaitlyn. The design was simple yet effective. However, the extra mechanism they had added to their robot at the last minute broke! It was designed to help them get up onto the two platforms. Fortunately, there was enough power available for it to slowly assist with the obstacle it was built for.

Charging over the gravel pit with a huge ground clearance

Shortly after, that extra mechanism fell off and so did the payload. In a lengthy and complicated series of maneuvers, James used the one-kilogram block to push the payload over into the designated area.

End of the road: the Iron Horse capsizes while trying to free its
jammed package (the small yellow catch was supposed to release
and allow the hinged door to fall)

On the camera-only run, the Iron Horse's payload wouldn’t release. James used the gravel pit to try to get the payload to come loose, but the robot flipped over. He attempted to flip the robot back over, but it tipped over on its side instead. This run was incomplete.

The lesson to be learned for these four groups? Each problem can be solved in many different ways, but some are more effective than others. In every problem you encounter, consider those many solutions and then choose the most effective one.

Field Trip to Peabody Stadium

After many months of trying, the Providence Engineering Academy was finally able to secure a field trip to see... well, a field! Peabody Stadium, an integral part of the sporting complex at Santa Barbara High School for almost 100 years, has been greatly in need of renewal for a range of reasons—regular flooding, surface maintenance, seating capability, ADA compliance—and our engineering students were given a sneak peek at the behind-the-scenes process!

Our own neighborhood! Peabody Stadium (old image) to the
upper left, and Providence School to the lower right

A quick walk across Canon Perdido Street brought the group to the construction trailers, where Mat Gradias from Kruger Bensen Ziemer Architects, Inc. met them and introduced them to some members of the construction and design team. Mat has been involved with the Santa Barbara ACE Mentor Program, which several of our students (Eva, Victor, and Seung) have attended for the past two years.

Mat showed the construction plans, and described to the group some of the challenges facing the team, from sourcing grants to managing city wastewater ducts to preserving the "look and feel" of the local neighborhood. The team's original completion date was April 2019, but is now projected for the middle of August.

Josh, Gabe, Victor, Ben, Todd, Colby, Eva, Alena, Claire, and
Madison facing north; behind is the new southern grandstand

There's a lot of mud and dust right now, but over the next few weeks there'll be seeing bright green artificial turf laid out. Regular flooding issues will be a thing of the past, with clever water management systems in the event of severe rainfall. Seating capacity will be greatly improved, and highly directional lighting and sound seeks to minimize light and noise pollution for the surrounding areas. The state-of-the-art track surface will be the only one of its kind for a hundred miles—a type of high-tech material that is known for producing world records.

The Engineering Academy was very grateful to Mat and the other presenters, and they're already excited to see the finished product!