A presentation by Jared Stachiw PhD, MPhil and Devon Burmeister P.Eng., BA.
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Transcript of A presentation by Jared Stachiw PhD, MPhil and Devon Burmeister P.Eng., BA.
RHEA, THE GIOVANNI MISSION, AND YOU.
A presentation by Jared Stachiw PhD, MPhil and Devon Burmeister P.Eng., BA
Mission Overview
To study the composition of Rhea’s geology via subsurface drilling.
Formation of celestial bodies Search for liquid water Understanding the composition of both mineral and
watery-ice based planetary bodies
Mission Overview Approx. 8-10 yrs Data Collected
Photographs (Aerial, and Surface)
Composition of Rhea’s icy/terrestrial surface and subsurface.
Travel 3.5 billion kilometers Approx. 7 yrs Due to weight uses many
`gravity assists` Launch Window - October Earth – Venus – Earth –
Venus – Earth – Jupiter – Rhea
Mission Overview Total cost - $3.3
billion
DevelopmentGiovanni is a sister
spacecraft to Cassini spacecraft
BD – 247 yet to be constructed
5-8 yrs
Planetary Composition Diameter of 1529 km, equatorial circumference of 4,802.2 km,
and a mass of 2.3071x1021 kg (For perspective Earth is 5.98x1024 kg) Second Largest Moon
Orbital Period of ~ 4.5 Earth Days No Atmosphere Surface temperature between -174 to -220 degrees Celsius Heavily cratered and scared with “Wispy Lines” – fractures
forming canyons Icy/Terrestrial surface composition
¾ Ice ¼ Rock “Frozen Dirty Snowball”
Tidal Locked
Cassini Mission Goals
Measure the Magnetosphere of Saturn
Study the composition of Saturn`s atmosphere
Determine the origin of Saturn's rings and the composition/geological history of the satellites around Saturn.
Signs of potential microbiological life on Titan
Primary mission (Equinox) – 4 yrs
Extended primary mission - 2 yrs
New mission (Solstice) – 7 yrs
1997 (launch) – 2017 (expected termination)
SpacecraftGiovanni’s Design Modeled after the Cassini spacecraft, but with a different probe
- the “BD – 247” Launch vehicle TITAN IVB . Giovanni’s Dimensions
Height- 6.7 M. Diameter- 4 M. Mass- 12,593 lbs
Giovanni’s Instruments Magnetometer, Cosmic Dust Analyzer, Cameras, Thrusters (powered by
Radioisotope Thermoelectric Generators – RTGs), onboard computers (for analyzing data), and a High and Low Gain antenna (for two way communication)
BD – 247 Drill (encapsulated in protective shell during flight) Simultaneously drills into planets crust, collects samples, and analyzes
the samples to determine the composition of different layers of Rhea Data is transmitted back to Earth via a relay between BD – 247 and
Giovanni