NAME:VIDHYA

CONTENTS  OVERWIEW  HISTORY  HOW LOON IS DESIGN  TECHNOLOGY  STRATOSPHERE/WORKING  RECEPTION  FUTURE SCOPE  ADVANTAGES  DISADVANTAGES

overview The two –third of the world’s population does not yet have internet access. More than half of world’s population is still without internet access.project loon is a network of balloons travelling on the edge of space. It design to extend internet connectivity to people in rural and remote areas worldwide. It is initiative taken by Google to provide internet access all over the world. A balloon is a flexible bag filled with air balloon. Entire earth can communicate using internet provide by Google balloons.

history In 2008 : Google contract with space data corporation. In 2011 : Google began unofficially developing the project under Google x labs. In 2013: Google announced the project officially and later they launched the first 30 balloons in new Zealand. In 2015: Google signed agreement with shri lanka and Indonesia and shri lanka becomes the second country covered with LTE internet after Vatican city.

/EQUIPMENT

1.ENVELOPE Project loon ‘s envelope are made from sheets of thin strong polyester film about 0.076mm. Stand “15 meters” wide & “12 meters” tall. Inside envelope there is another chamber called “Bladder”. The balloon can move up or down “1.7 km” range through the bladder system. This system can help to choose suitable wind current in stratosphere. To have the balloon descended a fan powered by the solar energy fills the bladder with air to move.

2.SOLAR PANEL  Solar panels sits between the envelope and payload.  Each units electronics' are powered by an array of solar panels.  In full sun,these panels produce “100 watts "of power that is enough to keep the unit running while also charging a battery for use at night.  By moving with the wind and charging in the sun a loon is able to power itself using only renew able energy sources.

3.PLAYLOAD  the payload is a small box that holds electronics devices such as circuit board,radio,antennas,batteries,gps,flight and sensor.  It also contain devises to monitor weather condition. 1. Circuit board: control the overall balloon system. 2.radio antennas: communicate with other balloons and with internet antennas on ground. 3.batteries: store solar power so the balloon can operate in height.

TECHNOLOGY (TYPES) 1.SOLAR AND BATTERY TECHNOLOGY 2.ALGORITHMIC CONTROL 3.WIRELESS MESH NETWORKING 4.ISM BANDS  People connect to the balloon network using special internet antenna attached to their building.  The signal bounces from balloon to balloon that to the global internet back on earth

1.SOLAR AND BETTRY TECHNOLOGY Loon use “600 w” battery charged by solar panels.these large light photo voltaic cells keeps the weight of the balloon less so that they can run for long mission without landing. 2.Algorithmic control Google x has developed software that move the balloon up or down to catch wind current based on their direction to more or less keep the balloons in one area

3.WIRELESS MESH TECHNOLOGY developing countries can’t afford to lay expensive fiber cable that have to be installed underground to allow user to connect to internet. Mesh technology send internet packages from balloon to balloon and sends data to end from homes bellow that have specially built antenna on their roof. 4.ISMbands Full form: industrial, scientific and medical. These bands are radio bands reserved internationally for the use of radio frequency energy for other than communication.