SCIENTIFIC OBJECTIVES

Sun

1. Interstellar medium

! � !  B field !  T !  Composition

1

2.� System

! � !  B field !  T !  Composition ! G field

2 ?

3. Planets

! G field ! Morphology !  Composition !  B field

3

MISSION ARCHITECTURE

6 Probes

!  6 probes (20Kg) !  100 AU !  50000 AU !  100000 AU

!  University cooperation

!  Vulnerable

!  L1 A/B Centuri park (6 month)

Relay

!  Relay station @ Pluto !  Scientific

payload

!  L1 A/B Centuri

park (6 month)

3 Gen.

!  S/C launched every 30 yr

!  Comm. Link !  Same bus !  Flexible P/L

!  L1 A/B Centuri

park (6 month)

Multilens

!  Smaller lens !  Launched

separately

!  Pointing issue

!  L1 A/B Centuri park (6 month)

5 / 4 3 / 3 2 / 5 1 / 2 3 / 2

TRADE OFF PARAMETERS

Rel Cost Sci. value Time Complexity

4 / 4 3 / 3 2 / 2 1 / 1 3 / 2

TRL Cost Subsys. C Mass PL Compl.

4 / 4 1 / 1 3 / 3 4 / 2

TRL Mass Cost Complexity

3 / 3 5 / 4 4 / 4

TRL Rel. Data Rate

TRADE OFF RESULT

6 Probes

!  Scientific Return !  Complexity ! Mass

Relay

!  Communication !  PL Complexity

!  Reliability

3 Gen.

!  Scientific Return !  Redundancy !  Communication

!  Cost

Multilens

!  Laser TRL

!  Complexity !  Reliability