Что говорить (International Space Station)

Что говорить:

1. If everyone's ready, let's start. Good afternoon everyone. It’s a pleasure to welcome you today. I am a student at the BMSTU Maxim Rubtsov. In my presentation I would like to speak about International Space Station.

2. Internationality of Space Station: 26 countries. European countries have participated as a unit, but Canada, USA, Russia and Japan have their own modules.

3. Here you can see Modules of the countries…

4. Now let’s speak about Specifications of ISS

5. The first launch was in 1998. There was 2 modules: The first module of the ISS, Zarya, was launched on 20 November 1998 on an autonomous Russian Proton rocket. It provided propulsion, attitude control, communications, electrical power, but lacked long-term life support functions. Two weeks later a passive NASA module Unity was launched aboard Space Shuttle and attached to Zarya by astronauts. Today ISS looks like in the picture

6. The electrical system of the International Space Station is a critical resource for the International Space Station (ISS) because it allows the crew to live comfortably, to safely operate the station, and to perform scientific experiments. The ISS electrical system uses solar cells to directly convert sunlight to electricity. Large numbers of cells are assembled in arrays to produce high power levels. This method of harnessing solar power is called photovoltaics.

7. Microgravity

   1. Drag from the residual atmosphere; when the ISS enters the Earth's shadow, the main solar panels are rotated to minimize this aerodynamic drag, helping reduce orbital decay.

   2. Vibration from movements of mechanical systems and the crew.

   3. Actuation of the on-board attitude control moment gyroscopes.

   4. Thruster firings for attitude or orbital changes.

   5. Gravity-gradient effects, also known as tidal effects. Items at different locations within the ISS would, if not attached to the station, follow slightly different orbits. Being mechanically interconnected these items experience small forces that keep the station moving as a rigid body.

8. In the future, the size of the station will increase even more, as shown in the picture.

9. Thank you for attention