Josh Smith Zachary Blunier Michael Krauz Matt Pensa Daniel Lane Trey Keown quake rattl e and roll
Feb 22, 2016
Josh SmithZachary BlunierMichael Krauz
Matt PensaDaniel LaneTrey Keown
quakerattle
and roll
• Determine the inner structure of Europa
• Rough surface suggests inner geological activity• Caused by either strong tremors
or a flowing subsurface ocean• Very interesting candidate for
extraterrestrial life
scienceobjective
s
operational
strategy• Deploy Seismometer Measurement
Mechanisms (SMM) at predetermined locations
• Transfer seismic data back to orbiter as it orbits above
payloadspecs
• Two components: EDID and SMM• EDID is launcher (double-barreled
shotgun)• SMMs are ammo
SMM EDID
Dimensions 8 cm x 8 cm x 8 cm4 cm radius
Shell Thickness
0.5 cm
Weight 0.5 kgPower Internal battery
Dimensions 29cm x 18cm x 46cm
Weight 5 kgPower Passive; powered
by excess helium in propulsion tankmichael’s
previous
designs
zach’s
payloadtechnolog
y• SMMs has a battery, microprocessor, a
seismometer, and a UHF transmitter• Continuously collect data and beam
back when orbiter passes overhead• 16 samples/second, 720 bits/second, 50
mb/week
physicsbreakdow
n• Solved for tangential velocity• Found impact velocity from tangental
velocity• From impact velocity, found the
penetration depth and deceleration• From deceleration and Europa’s
gravitational constant, found g-force SMM must sustain
𝐹=𝑚𝑎
thank you.
questions or
comments?