Wit ith space research for more lo lovable physic ics cla lasses - - PowerPoint PPT Presentation

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Aug 27, 2023 492 likes •737 views

Wit ith space research for more lo lovable physic ics cla lasses Annamria Komromi, MSc, teacher of mathematics and physics, and student of Physics Education PhD Program Etvs University Facts, , statements and and goals Most

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Wit ith space research for more lo lovable physic ics cla lasses

Annamária Komáromi, MSc, teacher of mathematics and physics, and student of Physics Education PhD Program Eötvös University

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Facts, , statements and and goals

Most students do not like physics
Mention of results of space research in the teaching of

physics is rare

Results of space research are very interesting
There is opportunity to refer to space research in

different areas of physics

Keep up with the latest scientific research
Make physics to be attractive

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Th The exp xperimental devic ice

MaSat-1 is the first Hungarian satellite
Developed and built by students at the

Technical University of Budapest

Was launched into low Earth orbit in 2012
Functioned perfectly for almost 3 years

as opposed to the predicted 3 months

In the teaching of physics we can refer to the satellite not only at the topic of GPS, or Kepler’s laws, but for example:

Electrostatics Thermodynamics Electromagnetism

Satellite class: 1U CubeSat
Dimensions: 10 cm × 10 cm ×10 cm
Mass: 1 kg
Propulsion: no

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Traditional applications

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Traditional application: Kin inematics:

Th The orbit

Data of MaSat-1: perigee: 300 km, apogee: 1450 km What can we calculate from these data?

P E A

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Traditional application: Dynamics:

Sp Speed

Data of Masat-1: perigee: 300 km, apogee: 1450 km

Maximum speed and minimum speed

vclose vfar

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Traditional application: Dyn ynamic ics:

The orbital period

Data of MaSat-1: perigee: 300 km, apogee: 1450 km

Orbital period from 3rd law of Kepler Notion of approximation in physics

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Non-traditional applications

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Non-traditional application: Kin inematics:

Th The orbit The la last few months of f MaSat-1

The orbit gradually becomes a circular shape

http://www.ha5mrc.hu/hamsat/sats.html

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Non-traditional application: Mechanics:

Vib ibration

Irregular strong vibration during and after launch

http://www.esa.int/Our_Activities/Launchers/Launch_vehicles/Vega3/Flight_overview http://cubesat.bme.hu/projektek/masat-1/a-fejlesztes-tortenete/

Vibrating platform

Flight VV01

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Non-traditional application: Thermodynamics:

Thermal expansion

Temperature of MaSat-1 at launch: 25 °C
Lowest temperature of MaSat-1 : 5 °C (internal heating)
How much was its volume

reduced? The problem:

What is it made of?
Pressure as boundary

condition

Space technology and industry

http://cubesat.bme.hu/projektek/masat-1/a-fejlesztes-tortenete/

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Non-traditional application: Thermodynamics:

Heat Transfer and th the Greenhouse Effect

Radiation affecting low-orbiting satellites (based on Trenberth et al. (2009) modified by author)

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Non-traditional application: Thermodynamics:

First La Law of f Thermodynamics

Satellite (MaSat-1) and Earth: the friction is very little for a

certain time

After a while the friction becomes significant
The fast “heat-death” of MaSat-1

Space debris

http://cubesat.bme.hu/wp-content/uploads/2015/01/Masat_1_reentry_forecast_2015_01_09_21_00_UTC.jpg

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Space debris

Considering the data of 2013, there are more than half a million pieces of space debris of varying sizes

http://www.esa.int/About_Us/ESRIN/Envisat_in_its_new_home

ENVISAT

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Non-traditional application: Ele lectrostatics:

Faraday cage The control centre of MaSat-1

Under construction With my students

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Non-traditional application: Ele lectric icity:

Conduction Phenomena

“When the satellite passes through an Earth shadow in its orbit, the required power is supplied by a single cell Li-ion battery, used as a secondary power source”

http://cubesat.bme.hu/en/projektek/masat-1/muszaki-bemutatas/ http://chandra.harvard.edu/ resources/faq/chandra/chandra-26.html

Space weather

EPS: Electrical Power System OBC: On-Board Computer COM: Communitation System ADCS: Altitude Determination and Control System

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Non-traditional application: Ele lectric icity:

Semiconductors

http://cubesat.bme.hu/en/2010/01/20/megerkeztek-a-napelem-tablak/

150 million km
1360 W/m2
60% (sensors and side-edges)
30% (efficiency of solar panel)
60% (sunny side)

What is the average power? Is the result right?

The energy can be more because of infrared radiation emitted by Earth surface

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Test of solar cells on the stage of the Budapest Operetta and Musical Theatre:

Non-traditional application: Ele lectric icity:

Semiconductors

http://cubesat.bme.hu/en/hirek/page/22/

High power dazzle lamps

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Non-traditional application: Ele lectromagnetic waves

Antenna and camera

Mass of Communication System: 75 g Operating temperature range: - 40Co - 80Co

Orbiting Satellite Carrying Amateur Radio

MaSat-1: OSCAR MO-72

Frequency: 437 MHz Length of antenna: 17 cm

http://cubesat.bme.hu/en/2013/02/18/

What fraction of the wavelength is the length of the antenna? (1/4)

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Results

Statements Goals Facts Proposals

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Competition results:

Sir Simon Rattle (Berlin Philharmonic) conducts one of our orchestras at our school

"From the Eötvös pendulum to the GOCE Satellite”

Physics in the science and the arts

Dorottya Takács, Áron Hadnagy, András Juhász (2015)

III. place

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Competition r results: Physics in in the scie ience and the art rts

"NASA and ORIGAMI” I. place "MaSat-1” III. place

Előd Ambrus (2014) Kitti Pohl at the competition (2015)

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Thank you for your attention

Annamária Komáromi annamarcsi@gmail.com