Science and Engineering » Hönnun » Skyward Sword

h1. Wiki

h1. Table of Contents

# [[Wiki#Organization|Organization]]

# [[Wiki#Alpha Team|Alpha Team]]

# [[Wiki#Design|Design]]

# [[Wiki#Research|Research]]

# [[Wiki#Logistics|Logistics]]

# [[Wiki#Media|Media]]

# [[Wiki#References|References]]

# [[Wiki#Cad files and number system|Cad files and number system]]

h2. NEWS

06/02/2012

*Got contact info on a guy who is a student at the engineering department at HÍ who did a simular project So if u have any questions related contact Halldor 

This it there website www.HABiceland.wordpress.com

*We got offer from Seglagerðin Ægir for the release mechanism. Which is two fabrics under and over the balloon with two zip on the top fabric to release the balloon 94440kr with tax, 75251kr with out tax. We are looking for lower price.

03/02/2012

CCP want's to have the simmular setup as in the Toshiba space chair. We replace the chair with there displayed object.

Link youtube video http://www.youtube.com/watch?v=k6PSbUl_68k

and making video http://www.youtube.com/watch?v=TK4S2XkcmJo

h2. Organization

This is the current modules and teams decided:

* Logistics - Þórður, Kristján

* Balloon - Bogi, Sverrir, Páll

* Camera - Guðjon, Lárus

* Platform/Structure - Vikar, Niklas

* Landing system - Örvar

* Tracking, Recovery, Electronics, Sensors - Guðjon

Industrial Liason: Halldor

h3. Alpha Team 

* Kristján

* Sverrir

* Páll

* Þórður

h3. Bravo Team

* Halldór

* Bogi

* Örvar

* Niklas

* Vikar

* Lárus

* Ragnar

h3. Financials

* Expenditure Spreadsheet (google docs) https://docs.google.com/spreadsheet/ccc?key=0AmHDz3r_2GgYdHBIZVlqakJJcE1CbXhDeEVuZzFoY2c&hl=en_US#gid=0

[[SCRUM Information]]

h3. Shared drive

Everyone in the class should have access to read and write to the drive

* \\hirftp.hir.is\hopasvaedi$\honnun2012

h3. Phone access

this is an account with a starting 10USD for making phone calls on this project.  If it gets low, please contact Joe.

* Install skype

* user: joe.foley75

* pass: skywardsword1

h3. Image hosting

"Flickr":http://www.flickr.com account for images

* user: skyward_sword_ru

* pass: IA#Y1u%x3GBi

Please sort Photos

h2. Alpha Team

h3. Keflavík Airport Weather Service

On 31.1.2012 3 members of Alpha team went to Keflavik airport (KEF) to meet up with Torfi Karl Antonsson the head of the "National Weather Service":http://www.vedur.is/ (NWS) station at Keflavík airport. Torfi was sceptical at first but at the end of the visit he was quite excited about the idea and was eager to help.

The ballooning activity at KEF as conducted by the NWS is twofold.

1. The first part is a high altitude weather test conducted twice daily with a small (350 gr.) balloon. There is a balloon release at 10:20 and 22:20. The balloon is filed with hydrogen gas in an automated process in a container out in the airfield. A "radiosonde":http://www.wikipedia.com/wiki/Radiosonde is attached to the balloon. The radiosonde records:

* Barometric pressure

* Wind speed

* Wind direction

* Temperature

* Humidity

* GPS coordinates 

The information is relayed via FM transmitter to a reciever at NWS. Before launch the rRadiosonde has to be primed. I.e. the reciever has to know about that radiosonde and know to recieve information. The radiosonde stops transmitting once it begins falling, it is single use and not retrieved.

2. The second part is high altitude "ozone":http://en.wikipedia.org/wiki/Ozone measuring. This test is conducted upon request from an unknown institution in Germany. The balloon is filled with helium gas and is filled and released manually. The payload is anozone measuring device and a radiosonde contained in a styrofoam box measuring ca 250x250x400mm. If this equipment is retrieved it is possible to reuse it.

Torfi sounded very willing to help. He sounded willing to provide us with radiosondes for a test flight (outdated models with lead acis batteries). He was willing to let us witness an ozone launch and possibly launch for us an extra balloon with a radiosonde and ballast.

"Pictures and videos from visit to the Weather Service at Keflavík Airport":http://www.flickr.com/photos/76042089@N03/sets/72157629201257277/

h3. Gas selection

Gas used for test flight will be Helium as decided by Joe and Ragnar at a meeting on 7.2.2012

h3. Electronics

The test flight will have the following electronics

* -Camera - A GoPro HDHero2 has been purchased.-

* GPS tracker - Currently the "Spot":http://www.findmespot.eu/en/ is the 

* -Altimeter - Being a recent addition not much research has been made into this. If launched from Keflavík Airport, the Weather Service can provide us with a radiosonde wich has this function. As well as high altitude GPS tracking up to the "cut down" point.- 

** Appears that there are some low cost options-

*** Zlog makes one that goes to 32000m http://www.hexpertsystems.com/products.html

*** For higher, we would need to build something like this http://www.thefintels.com/aer/atom_altime

*** Which uses this chip Honeywell ASDX http://datasheet.octopart.com/ASDX015A24R-Honeywell-datasheet-29814.pdf

*** Sparkfun has a barameter similar to the Zlog, but needs a recorder. http://www.sparkfun.com/products/9694

*** OpenLog serial SD card datalogger - http://www.sparkfun.com/products/9530-

A change on 8.2.2012 indicated that the test flight should be a dummy payload flight, with only a spot device for tracking and some ballast for simulation of the load.

Possible *cheap* camera - http://www.amazon.com/Mini-Camera-MD80-microSD-card/dp/B002AN2JXQ for test flight

h3. Balloon

A 3000 gr. balloon will be used for the test flight as decided by Joe and Ragnar at a meeting on 7.2.2012

h3. Retrieval

I contact "Landhelgisgæslan":http://www.lhg.is (Coast Guard) and asked them for help to retrive the sword after launch. They were willing to do that, but ongly if the other helicopter companys in Iceland were not intrested to do it, or do not have the equipment to do it, since the sword will maybe land on sea. 

The helicopter companys that i know are:

-Vesturflug ehf(Blue West Helicopters)

-Norðurflug

-Þyrluþjónustan

-Vesturflug ehf

If you know some other, please add it here above.

LHG contact:

Ásgrímur L. Ásgrímsson

545-214 & 860-2922

___________________________

We have made a format that we sent to the helicopter companies and asked if they could do the retival. Now we are waiting for the answer. If all of the heli- companys refuse to do the job, we can contact the LHG and discuss how we are going to solve this mission.

h2. Research and Design

* [[FRDPRC Analysis]]

h3. Balloons

Types of high altitude balloons

* Latex weather balloon - http://en.wikipedia.org/wiki/Weather_balloon

* Valved latex balloon

* Superpressure balloon - http://en.wikipedia.org/wiki/Superpressure_balloon

* Zero pressure balloon - http://www.eoss.org/faq/zero_pressure.htm

* The Totex (Latex) balloon supplier - http://www.kaymont.com

* Parachute seller and descend rates - http://www.the-rocketman.com/recovery.html

h2. Logistics

* Budget

** Electronics

[[Cameras,screens and electronics]]

** Consumables

** Tools

* [[Purchasing]]

* [[Authorization]]

* Environmental

** Weather forecast

*** https://www-test.sarweather.com - high res forecast on demand (SFS: I can get us access to the service)

* Launch

** Location -> Snæfellsnes?

** Number of launches

** Launch car

*** Van

*** 4x4 + trailer

** Protective clothing for launch crew?

* Retrieval

** Chase car 

*** Páll (4x4)

*** Kristján (4x4)

** High quality maps of the landing area for best approach by road/foot

** Search and reascue (if needed)

*** Contact Landhelgisgæslan, could they use the search for training?

h2. Media

* "Pictures from visit to the Weather Service at Keflavík Airport":http://www.flickr.com/photos/76042089@N03/sets/72157629201257277/

h2. References

Useful Links

* [[Calculators]]

* [[Similar Projects]]

* [[Links]]

h2. [[Cad files and number system]]