My Sun Chaser Blog – February

Having been around for a few months now I’m beginning to feel like one of the team. I got some great selfies with some of the sub-teams during of the meetings this month. I’ve also got lots to report on.

The Publicity Team split their time this month between continuing their work on the promotional posters for a display at the Chasewater Innovation Centre and identifying new potential sponsors for the Sun Chaser mission. They also put the finishing touches to an infographic detailing some of Project Horizon’s achievements since it began – it’s impressive work!

Horizon Achievements

The Modelling Team have done some amazing work and have added a number of new features and refinements to the Sunrise Calculator. One of the key questions was how to deal with refraction of sunlight in the Earth’s atmosphere. When their research reached a dead end they reached out to Dr Helen Mason of the Department for Applied Mathematics and Theoretical Physics at Cambridge University. Dr Mason was heading out on an expedition but passed their enquiry to Dr David Pike (of Cambridge University’s SunTrek Team). Dr Pike was able to put the team in touch with Dr Andrew T. Young at San Diego University who was able to recommend a really helpful journal article on the subject. After a lot of reading the team adjusted their model using the calculations in the article.

tm13model3

Never content with just achieving the basic goals the team also added the ability to predict the times of Civil Dawn (when the Sun is 6 degrees below the horizon) and Nautical Dawn (when the Sun is 12 degrees below the horizon) to the model.

All of these new features mean that the code will need to be mostly rewritten which will be quite a challenge.

The Education Team drafted and re-drafted their first two lesson plans.

tm13edu and pubHaving added a little detail both plans were sent to their partner school, St Mary’s on the Mount Catholic School. They also put together a shopping list of resources to support their lessons.

Next month they’ll be heading over to St Mary’s School to discuss the lessons, resources and indoor/outdoor spaces.

tm12eng2

The month did not start well for the Engineering Team as a small misreading of a circuit diagram led to the sudden and explosive death of the Arduino Pro Mini in their test kit (a replacement was promptly put on order). Despite this early setback the team quickly recovered and got started on the task of building the probe’s systems. This began with the more experienced members from last year’s mission teaching the others how to solder.

Unboxing rapid 2

The highlight of the month was the arrival of two large boxes of equipment from the team’s Sponsors; Rapid Electronics and Proto-pic.co.uk. The engineers wasted no time cutting into the boxes and unpacking all of the new equipment. The boxes contained all of the electronics the team needs (except for a few antenna connectors which are out of stock, but should arrive soon). They also contained some torches as the team will be preparing for launch between 2 and 4am in pitch black so good lighting will be essential.

Following the arrival of the new equipment the Engineering Team went back over the flight computer circuit, adding in the last few connections and taking turns to check it against the original design. The new tracking firmware was quickly uploaded and was ready for testing by the end of the month.

tm13engineers1

The other half of the team worked on two projects; camera modifications and the design for a beacon to make the probe (and me) easier to find when it lands. They quickly figured out how to customise the camera firmware of last year’s camera. The beacon is taking a little more work. They have set up an Arduino to control eight LEDs and a pair of speakers on the outside of the probe. The lights and sound will pulse to make it easy to find the probe (and me) when it lands.

The team were humbled to receive the support of four new sponsors for their Sun Chaser mission. It was heartening to see that many of the sponsors had supported the Beat Felix mission last year.

The second highlight of the month was a plug for the Sun Chaser Mission on Twitter by BBC Click’s Kate Russell (I wish she could have seen the excitement that flashed around the room when the team found out!).

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