Transcript 슬라이드 1 - Center for Excellence in Education

Team : Orange
Team

Principle Investigator : Hanmin Kang
 Co workers : Jiho Lee
Jaeik Bae
Junha Kim
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Contents
1. Intro
2. Instruments
3. Structure & Time line
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1. Intro
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Features of Venus
 The second largest rocky planet
in the solar system
 Diameter : Smaller than Earth
with 95%
 Cycle of revolution is similar
to period of rotation
 Period of rotation : 243 days
cycle of revolution : 224 days
 Mass : Smaller than Earth with
81.5%
 Distance between Sun and
Venus : 0.7AU
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Surface of Venus
 Dry and hot surface
 Temperature : 737K
 Pressure : 92atm
 No liquid water
 Craters, mountains,
canyons, valleys
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Atmosphere of Venus
 Cloud : Sulfuric acid and water
 Temperature : 228K
 Pressure : Similar to Earth
 Thick atmosphere
 Wind speed
 370km/h above the cloud
 210km/h under the cloud
 Ozone in atmosphere : Less
than Earth with 10%
 96.5% of CO2, 3.5% of N2
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So we think that……..
There might be some organic matters or lives in the
clouds of Venus
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There might not be any creatures on the surface of
Venus
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Water and sulfuric acid in the clouds of Venus.
Ozone exist in the atmosphere of Venus
Too hot
What we would like to find or study in Venus is…….
Different kinds of bio-marks in the atmosphere
Different sorts of elements and bio-marks in the surface
Properties of atmosphere (pressure, temperature……..)
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Mission Objects
Mission Statement
-Analyzing components of clouds and
surfaces in Venus
- Studying properties of atmosphere in
Venus
- Searching for lives or organic elements in
Venus
Science Goals
- To look for lives or organic resources in
clouds and surfaces of Venus
- To know if atmosphere of Venus is
appropriate for creatures to live.
- To compare components of clouds and
surfaces in Venus with those of Earth
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Mission Justification
Why did we choose this
planet?
- Venus is rocky
planet, and the size
of it is similar to
Earth.
-We heard that
there is some water
in the cloud of
Venus.
Why does Venus have biological potential?
- It has some water in the atmosphere.
- Also, it has ozone layer at a altitude of
100km
- Gravity and temperature is similar to
Earth in the cloud of Venus
What mission type(platform) will be used in our project?
- Orbiter
: Orbits around Venus
- Carrier
: Measures about the atmosphere of Venus
- Interceptor : Collects some samples on the surfaces of Venus
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Something to Measure
 Percentage of each gas occupation at Venus’
atmosphere (especially H2S,SO2)
 Carbon compounds in the atmosphere
 Amount of ‘amino acids’ right after the lightning
(Based on Miller’s experiment)
 Wind speed, temperature and pressure in cloud.
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Biomarkers
 Organic compounds
: DNA, RNA, proteins, hydrocarbons,
especially ‘Amino acids’
 Inorganic compounds:
: Sulfur compounds, carbonates, silicates
 Small organic molecules
2. Instruments
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Introduce about our instruments
1.
Camera
2.
Radio Science
3.
GCMS-TLS
4.
ASI for p, T, wind, accel
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Compliments of instruments for the mission
Camera
 Major measurements : Shape of clouds and surfaces, figure of
certain matters.
 Take some photos of surfaces and clouds of Venus. So, camera
will give information about geology.
 Can take some pictures of what the other instruments get.
 Help to control the craft.
We will use…….
Infrared camera in the orbiter,
Wide and middle angle camera in the carrier,
Narrow angle camera in the interceptor
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Radio Science (RS)
Performs as a GPS,
and communicates with
the orbiter
 Controls or tracks the the
carrier or interceptor by
using RS.
 Does not provide the
information about life
 Does not depend upon
weather.
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GCMS-TLS
 GC/MS
 Separate mix gas, check mass
spectrum and know what elements are
in this gas.
 Major measurements : Venus'
atmosphere (H2O, CO2, NH3, CH4…)
 Can find organic matters and biomarks from GC/MS-TLS. So we can get
information of existing or extinct life.
 We can get chemical information from
this instrument
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Mass
Spectrometry(MS)
Gas Chromatograph
(GC)
 Analyte is separated in GC and ionize through
transfer line.
 Mass spectrometry act in very low pressure
 To protect MS hardware
 To increase of mean free path
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 TLS (Tunable Laser
Spectrometer)
 Chemical construction,
organic structure
 It will provide information
about existing life
 It will give biological, chemical
information
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TLS produces specific light to vibrate the molecule
2. Once the molecule vibrates, TLS minutely tuned to
different wavelength of light to result in an extremely
precise measurement.
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ASI for p, T, wind, accel.
 Major measurements :
Temperature, pressure, wind
speed
 Can assume the existence of
life by its measurement
 Provides Physical information
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3. Structure & Time line
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Structure of Spacecraft
Antenna
Solar cell
Main body of
spacecraft
Engine of carrier
Propulsion system
Carrier
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Energy Resources
 Solar Energy
 We can operate the orbiter by using solar energy,
because the orbiter always get around in space.
 Thus, the orbiter can always receive sunlight, so it can
generate electricity by solar energy, using solar cells.
 Nuclear Energy
 The carrier and interceptor which perform their work
under the clouds of Venus can’t get energy from sun.
 So they have to use nuclear energy, which can produce a
lot of energy with small amount of resources.
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Time Line
2015. 7. 1 : Launch our craft
~2015. 12.24 : Voyage to Venus
Earth
Venus
~2016.1. 24 : Stabilize the orbit of craft
~2015. 8. 1 : Stabilize the orbit of craft
~2020.1. 24 : Exploration period
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Stabilizing the orbit
of the craft
in Earth
2015. 7. 1~8.1
Arrive to Venus
2015. 1. 24
Mission start
2016. 1. 24
Voyage
to Venus
Mission on Venus
Mission end
-Death of the spacecraft.
2020. 1. 24
Launching day
2015.7.1
Stabilizing the orbit of the
craft in Venus
2015.12.24~2016.1.24
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Methods to explore Venus
2
1
Earth
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Venus
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First : Change the length of craft
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Methods to explore Venus
2
1
Earth
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Venus
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Second : Drop the carrier from the orbiter
 The structure of the carrier
Main body
Wide angle
camera
-contains
GCMS-TLS
ASI for p, T, wind, accel,
Radio Science
Robot arm for
collecting materials from
atmosphere
Wings to help carriers u
and down
Middle angle
camera
Disk
Cargo which has 4
interceptors
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How to up and down through the jet
stream
Generated by solar cell
Before
dropping
carrier
After
dropping
the carrier
Using engine of the carrier &
storing energy in battery of the
carrier
Using engine of the orbiter
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Methods to explore Venus
2
1
Earth
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Venus
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Third : Throw down interceptor from the carrier
 The structure of interceptor
When
interceptor
return to
carrier
Antenna
Camera
Main body
Propulsion
system
Robot arm
Leg of
interceptor
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Region Explored by Interceptor
 There are a lot of volcanoes and shields on Venus
 Our landing spacecraft, ‘Interceptor’, will land on the
large shield to land stable
 In the prior exploration like
Venera14, they landed on the
‘Theiamons’ which is a large
shield volcano on Venus
Region Explored by Interceptor
Region Explored by Interceptor
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