01/29/2013-Rough Estimates (Mass, Power, Sensor List)

Sensor List:
Sam - Groups 1-5 Vera - Groups 6-10

Power estimation:
Raj - Groups 1-5

Mike - Groups 6-10

Mass estimation:
Grant - Groups 1-5

Tom - Groups 6-10



Michael Cunningham
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Grant McLaughlin
Mass estimates from last semester AVSS projects

Team 1
no mass estimates

Team 2
star tracker - 5.5 kg

Team 3
no mass estimates

Team 4
no mass estimates

Team 5
12 kg


 * 3 IMUs (0.750 kg)
 * 4 gyros (0.4 kg)
 * 4 accelerometer (0.071 kg)
 * 2 star trackers (1.85 kg)
 * 2 pitot (1 kg)
 * 3 temp (0.136 kg)
 * 2 pressue (0.002 kg)
 * 1 oxygen (0.175 kg)
 * 1 radiation (0.9 kg)
 * 5 fuel level (-)
 * 2 water level (-)
 * flash LIDAR (-)

​Team 6
50 kg
 * sensors (5.5 kg)
 * communications (21 kg)
 * computing (23.2 kg)

​Team 7
no mass estimates

Team 8
no mass estimates

Team 9
no mass estimates === Team 10 === no mass estimates

Team 11
326.7 kg (detail of estimates in slides; 200 kg for 2 LIDAR units)

total mass estimate for crew capsule:  500 kg first guess for habitat: 200 kg first guess for rover: 200 kg
 * sensors 330 kg
 * computing 25 kg
 * communications 25 kg
 * wiring (no mention in any projects)

additional note: I did not see any volume estimates for any teams

Samantha Johnson
From Teams 1 - 5
 * Cabin Sensors
 * Cabin Pressure
 * CO2 Level
 * Oxygen Level
 * Air tank pressure
 * Cabin temp
 * Air flow rate
 * Water tank level
 * Humidity
 * Radiation
 * Air Filtration
 * Water Filtration
 * Electronics temp
 * GNC Sensors
 * 3 axis accelerometer
 * 3 axis Gyro
 * IMU
 * Pitot Tube
 * Fuel Tank Level
 * Battery/Fuel Cell Level
 * Radar
 * External Pressure
 * External Temp
 * LIDAR
 * Star Tracker
 * Landing Gear

Michael Hamilton
Are these all the estimates and averages for the projects we did last semester?

Vera Klimchenko
Yes. Everything is from last semester.

Michael Hamilton
I was talking with the SI group and we were concerned with these numbers being from the previous assignments because the scope of this project is so much different. We are taking 2-4 people to the moon and staying for 28 days in a (most likely) larger capsule. The numbers from last semester characterize a different mission and architecture. There are elements of last years projects which don't scale much to a larger mission, but there may be some that get much bigger, require more power, etc. with this new scope. Do you think you can consider this and scale any numbers accordingly? We feel like this would better help the accuracy of the estimates.
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