Project Xpedition

Spacecraft Senior Design – Spring 2009http://eng.purdue.edu/jump/25cc30

Motivation:Commercial Lunar Missions

Resupply Lunar BaseSmall Payload

Project Xpedition Requirements

•Land on the Moon

•Move 500 meters

•Transmit HD pictures and video to Earth

•Survive the Lunar Night

•Minimize cost with 90% reliability

Project Xpedition

Payloads

•100 g•10 kg•1700 kg

Mission Phases

•Earth Launch•Lunar Transfer•Lunar Descent•Locomotion 500 m

Earth Launch

110 ft

180 ft

160 ft

Dnepr - 1 Falcon - 9

Earth Launch• Site: Baikonur Cosmodrome, Kazakhstan• Cost: $4.8M

250 Mile Parking Orbit

LanderOrbital Transfer

Vehicle

880 lbs injected to Low

Earth Orbit

Solar Arrays unfold

Attitude Control

InternalView

Hall Thruster produces 80

mN of thrust

Power

CommunicationS-Band Antenna

2 Solar ArraysLithium-Ion Battery

Attitude

Chemical Thrusters

Sun SensorStar Sensor

Reaction Wheels

Lunar Transfer

•25 km parking orbit•2 hour orbital period

•Lander is self sufficient•160 kg Lander mass •Half of mass is propellant

Space Balls Housing

Communication Antenna and Motor

Solar Panel

Attitude Control Thrusters

RadiatorAttitude Sensors

CPU

H2O2 Tank

Helium Tank

Radial Flow Hybrid Engine

3 ft.

Camera

Surveyor 3

Apollo 12

40km

Landing Site: Mare Cognitum

Mission Requirements Land on Moon Move Payload 500 m Take Picture

Performing system analysis

Lexan Outer Shell

Camera

CPU

Dust Removing Vibrating Motor

Battery

100g Payload

Main Axle and Motor Housing

Communications Transceiver

Mission Requirements

1. Land on Moon

2. Move 500m

3. Take PictureTaking Photo of LanderRemoving Dust

All Systems Are GO!Avoiding Obstacle

Cruise Speed: 3.2 mphMinimum Turning Radius: 2.5 in

10 kg Lunar Lander

230 lbs Lander270 lbs Propellant500 lbs Total

Mission Requirements

1. Land on Moon

2. Move 500m

3. Take Picture

4. Survive Night

Hop Engine

Thrust: 45 lbsBurn Time: 135 sec10 kg Payload

500m

Record Video

Mission Requirements

1. Land on Moon

2. Move 500m

3. Take Picture

4. Survive Night

Completed lunar descent• Full stop• Begin locomotion

Attitude Thrusters

16 ft

6 ft

300 ft

Main EngineAvg. Thrust: 230 lbsBurn time: 60 s

Large Payload

Mission Requirements:1. Move 500 meters2. Land on moon3. Resupply base

$27MCost

- $22M Purse

= $5MNet Mission Cost

100 g 10 kg 1743 kg0

50

100

150

200

250

$27 Million72% success

$30 Million72% success

$223 Million

Mission Cost, $M in 2009 DollarsCost Per Kilogram ($M)

Mission Cost

Recommendations:

1. Balance reliability and cost2. Electric Propulsion for Lunar transfer3. Soft land on Lunar surface

Google Lunar X PRIZE:

1. $27M mission accomplished for $5M2. Many viable locomotion methods3. Potential to open commercial market

Results

Question & Answer

http://eng.purdue.edu/jump/25cc30

Project Xpedition