Phoe

nix

Phoe

nix

Ove

rvie

w o

f the

Pho

enix

Ent

ry, D

esce

nt a

nd

Land

ing

Syst

em

Rob

Gro

ver

Jet P

ropu

lsio

n La

b

https://ntrs.nasa.gov/search.jsp?R=20070014659 2018-09-04T17:19:28+00:00Z

2ndIP

PWA

ugus

t 23r

d, 2

004

RG

2

Phoe

nix

Phoe

nix

Phoe

nix

Mis

sion

Goa

ls

•St

udy

the

hist

ory

of w

ater

in M

ars’

arc

tic re

gion

.•

Sear

ch fo

r hab

itabl

e zo

nes i

n M

ars’

arc

tic.

•D

evel

op a

robo

tic sy

stem

to e

xplo

re M

ars.

Reb

irth

of t

he M

ars 2

001

Lan

der

2ndIP

PWA

ugus

t 23r

d, 2

004

RG

3

Phoe

nix

Phoe

nix

Payl

oad

Rob

otic

Arm

(RA

)JP

L

Rob

otic

Arm

Cam

era

(RA

C)

Max

Pla

nk A

eron

omie

Mic

rosc

opy,

Ele

ctro

chem

istr

y &

Con

duct

ivity

Ana

lyze

r (M

EC

A)

JPL

Mar

s Des

cent

Imag

er

(MA

RD

I)M

SSS

Surf

ace

Ster

eo Im

ager

(SSI

)U

nive

rsity

of A

rizo

na

The

rmal

Evo

lved

Gas

A

naly

zer

(TE

GA

)U

nive

rsity

of A

rizo

na

Met

eoro

logi

cal P

acka

ge w

ith sc

anni

ng L

IDA

RC

anad

ian

Spac

e A

genc

y

2ndIP

PWA

ugus

t 23r

d, 2

004

RG

4

Phoe

nix

Phoe

nix

Aer

oshe

ll/En

try C

ompa

rison

0.06

-3.5

0.25

62.9

588

-12

6.5

2.65

’01

Lan

der

0.18-11

0.27

, TB

D

942400

-15.

63 to

-13.

68

5.2

to 6

.8

4.57

2

MSL

0.18

-11.

1

0.22

1

63.7

930

-17.

6

4.5,

4.4

2

3.50

5

Vik

ing

I, II

0.06

-3.5

0.25

69.3

602

-12.

5

5.7

2.65

Phoe

nix

MPF

/ME

R

0N

omin

al L

/D

0N

omin

al α

, deg

0.27

/0.2

6X

CG

/D r

efer

ence

62.3

/89.

8m

/(CDA

), kg

/m2

585/

840

Ent

ry M

ass,

kg

-13.

8/-1

1.5

Rel

. Ent

ry F

PA, d

eg

7.6/

5.5

Rel

. Ent

ry V

eloc

ity, k

m/s

2.65

Dia

met

er, m

Entry

Veh

icle

s

2ndIP

PWA

ugus

t 23r

d, 2

004

RG

5

Phoe

nix

Phoe

nix

Entry

Tra

ject

ory

Com

paris

on

2ndIP

PWA

ugus

t 23r

d, 2

004

RG

6

Phoe

nix

Phoe

nix

•Rad

ar A

ctiv

ated

: E+2

63s,

L-1

37s,

8 k

m

•Hea

t Shi

eld

Jetti

son:

E+2

60s,

L-1

40s,

9 k

m

•Par

achu

te D

eplo

ymen

t: E

+250

s, L

-150

s,10

km

, < 3

50 m

/s (M

ach

1.45

)

•Pea

k H

eatin

g: E

+99s

, L-3

01s,

45

km,

Pea

k D

ecel

erat

ion:

E+1

17s,

L-3

53s,

7g

•Cru

ise

Sta

ge S

epar

atio

n: E

-5m

in

•Lan

der S

epar

atio

n: E

+371

s, L

-29s

, 0.7

4 km

•Thr

ottle

Up:

E+3

74s,

L-2

6s, 0

.57

km

•Con

stan

t Vel

ocity

Ach

ieve

d: E

+393

s, L

-7s,

0.0

12 k

m, 1

.6 m

/s

•Tou

chdo

wn:

E+4

00s,

L-0

s, 0

km

, 1.6

m/s

•Ent

ry T

urn

Sta

rts: E

-6.3

min

. Tu

rn c

ompl

eted

by

E-5

min

.

•Ent

ry: E

-0s,

L-4

70s,

125

km

*, 5.

7 km

/s, γ

= -1

2.5°

•Leg

Dep

loym

ents

: E+2

93s,

L-1

07s,

6.5

km

•Dus

t Set

tling

: L+0

to L

+15

min

Land

ing

at

-3.5

km

elev

atio

n ab

ove

MO

LA

X-ba

nd D

TE C

lose

d / O

pen

Loop

UH

F-ba

nd to

Orb

iter

X-ba

nd D

TE O

pen-

Loop

UH

F-ba

nd to

Orb

iter

•Fire

Pyr

os fo

r Dep

loym

ents

: L+7

sec

•Beg

in G

yro-

Com

pass

ing:

L+1

00m

in

•Sol

ar A

rray

Dep

loy:

L+2

5min

X-ba

nd D

TEU

HF-

band

to O

rbite

r

*Alti

tude

refe

renc

ed to

equ

ator

ial r

adiu

s

•Rad

ar c

utof

f: E

+395

s, L

-5s,

0.0

10 k

m, 1

.6 m

/s

Phoe

nix

EDL

Tim

elin

e

2ndIP

PWA

ugus

t 23r

d, 2

004

RG

7

Phoe

nix

Phoe

nix

Long

itude

(deg

)

Latitude (deg)

Pos

ition

at P

arac

hute

Dep

loy

123

o W

40 '

2

0 '

122

o W

40'

2

0'

20'

30'

40'

50'

70o N

Hyp

erso

nic

Phas

e

•Hyp

erso

nic

Gui

danc

e w

ill b

e D

emon

stra

ted

by

Usi

ng a

Mod

ified

Ver

sion

of t

he A

pollo

Ear

th-e

ntry

G

uida

nce

–Ter

min

al P

oint

Ran

ge C

ontro

l with

Gai

n M

atrix

Fro

m T

raje

ctor

y Pe

rturb

atio

ns–N

omin

al V

ehic

le L

/D =

0.0

6 (A

lpha

=3.5

deg

)–U

tiliz

es B

ank

Con

trol t

o St

eer t

o Ta

rget

at

Chu

te D

eplo

y –O

pera

tes a

t 10

Hz

•No

Req

uire

men

t on

Gui

danc

e A

ccur

acy

•Per

form

ance

will

be

Cha

ract

eriz

ed b

y En

d-to

-End

M

onte

Car

los

•“B

reak

-it”

Test

ing

Will

Hel

p D

efin

e C

apab

ility

Lim

its

•Ful

l “Li

ft U

p”/“

Lift

Dow

n” D

oes N

ot Im

pact

Lan

ded

Succ

ess,

Just

Acc

urac

y

10 k

m ra

dius

Apo

llo G

uida

nce

Cro

ssra

nge

Perf

orm

ance

-4-3-2-101234 140

190

240

290

Tim

e (s

ec)

Error (km)

Nav

X-ra

nge

Erro

rP

os D

eadb

and

Neg

Dea

dban

d

Ban

k R

ever

sals

Trig

gere

d

Rev

ersa

ls In

hibi

ted

to

Prio

ritiz

e C

orre

ctio

n of

D

ownr

ange

Err

or

2ndIP

PWA

ugus

t 23r

d, 2

004

RG

8

Phoe

nix

Phoe

nix

Hyp

erso

nic

Phas

e

Phoe

nix

Mar

s ’01

Req

uire

men

t•

Entry

Vel

ocity

5.76

kps

~6.5

kps

•En

try E

rror

s, D

eliv

ery

0.20

deg

0.27

deg

•En

try E

rror

s, N

av0.

15 d

eg0.

15 d

eg•

Max

Hea

ting

62 W

/cm

272

W/c

m2

•M

ax L

oads

9.5

g’s

16 g

’s•

Max

Bon

dlin

e Te

mp

150

C25

0 C

•Ex

ist H

ardw

are:

Hea

tshi

eld

/ Bac

kshe

ll St

ruct

ure

& T

PS•

New

Har

dwar

e: E

DL

Ant

enna

s & A

ssoc

. TPS

•B

egin

s with

Ent

ry In

terf

ace

at 1

25 k

m R

efer

ence

Alti

tude

•

Dom

inat

ed b

y En

try H

eatin

g•

All K

ey P

aram

eter

s With

in M

ars 2

001

Des

ign

Enve

lope

2ndIP

PWA

ugus

t 23r

d, 2

004

RG

9

Phoe

nix

Phoe

nix

Phoe

nix

Mar

s ’01

Req

uire

men

t•

Max

Dep

loy

Mac

h1.

72.

25•

Max

Dep

loy

Qba

r48

5 Pa

1100

Pa

Para

chut

e Ph

ase

•M

ars 2

001

Para

chut

e: 1

3.4m

Vik

ing

disc

gap

ban

d•

Phoe

nix

Cur

rent

ly 1

2.4m

Vik

ing

Dis

c G

ap B

and

•Ph

ase

Beg

ins w

ith P

arac

hute

Mor

tar F

iring

•

Mar

s-01

Dep

loy

Push

ed to

Vik

ing

Lim

it fo

r Site

Per

form

ance

•C

urre

nt L

ande

r Loa

ds C

apab

ility

Req

uire

s a D

eplo

y B

elow

500

Pa

Phoe

nix

Para

chut

e•V

ikin

g D

esig

n D

isc

Gap

Ban

d (D

GB

)

2ndIP

PWA

ugus

t 23r

d, 2

004

RG

10

Phoe

nix

Phoe

nix

Term

inal

Des

cent

Pha

seD

esce

nt E

ngin

esD

oppl

er R

adar

Mar

s ’0

1 C

onfig

.

•A

ltitu

de–

Op.

Ran

ge: 4

0-24

00 m

–Er

ror:

≤5%

•V

eloc

ity–

Op.

Ran

ge: 4

0-14

00 m

–Er

ror:

≤4%

(> 1

m/s

)–

Qua

ntiz

atio

n: 0

.82

m/s

•Ph

oeni

x U

pgra

de–

Miti

gate

s hor

izon

tal v

el. e

rror

du

e to

slop

es–

Extra

set o

f ant

enna

s (8

tota

l)–

Alt.

Ran

ge: 1

-370

0 m

–V

el. R

ange

: 10-

2150

m–

Qua

ntiz

atio

n.: 0

.40

m/s

–Sa

me

erro

r spe

cs

•12

des

cent

eng

ines

, ~30

0N

each

.•

Puls

e-w

idth

mod

ulat

ed a

t 10

Hz.

•

Cur

rent

bas

elin

e 3

full

on.

•In

add

ition

to d

esce

nt

brea

king

, pro

vide

s 3-a

xis

attit

ude

cont

rol.

Rad

ar A

nten

nas

Des

cent

Eng

ine

(12)

2ndIP

PWA

ugus

t 23r

d, 2

004

RG

11

Phoe

nix

Phoe

nix

Dat

a R

etur

n•U

HF

Com

mdu

ring

all o

f ED

L•

Dire

ct li

nk to

Ody

ssey

or M

RO

•8

Kb/

s Dat

a R

ate

•C

once

rn a

bout

Pla

sma

blac

kout

in H

yper

soni

c•X

-Ban

d Se

map

hore

s dur

ing

all o

f ED

L•

Con

firm

atio

n of

Key

Eve

nts

•C

apab

ility

to p

rodu

ce “

faul

t” se

map

hore

s•

Som

e le

vel o

f per

form

ance

dat

a•L

ink

anal

yses

to b

e re

fined

as M

issi

on D

esig

n m

atur

es

EDL

Com

mun

icat

ions

LGA

3 PL

CS

UH

F A

NTE

NN

A 3 PL

CS

Mar

gin

for 8

kbp

s

-10

-505101520253035

-400

-300

-200

-100

010

020

030

040

050

060

0

Seco

nds

from

Ent

ry

Power(dBm)

Cru

ise

Sta

ge

Jetti

son

Ent

ry

inte

rface

12

5 km

Chu

te

Dep

loy

Land

er

sepa

ratio

n (h

elix

ant

enna

)

Sign

al to

Noi

se R

atio

dur

ing

entr

y

5.00

7.00

9.00

11.0

0

13.0

0

15.0

0

17.0

0

19.0

0

21.0

0

23.0

0

25.0

0

050

100

150

200

250

300

350

400

450

Tim

e (s

econ

ds)

Pt/No (dB-Hz)

Entr

y In

terf

ace

Para

chut

e D

eplo

y

Acq

uisi

tion

Rea

ltim

e

Pos

t-rea

ltim

eP

roce

ssin

g

Nom

inal

Wor

st C

ase

No

swin

g,

Wor

st C

ase

w/ 2

5 de

g sw

ing

KD

R3.

3.5

Tel

emet

ry D

urat

ions

2ndIP

PWA

ugus

t 23r

d, 2

004

RG

12

Phoe

nix

Phoe

nix

Sum

mar

y

•Ph

oeni

x is

a re

birth

of t

he 2

001

Land

er u

sing

the

sam

e ha

rdw

are

and

man

y of

the

sam

e te

am m

embe

rs.

•C

ontin

uatio

n of

follo

w w

ater

stra

tegy

targ

etin

g su

bsur

face

ice

in th

e no

rther

n po

lar r

egio

n.•

Firs

t use

of h

yper

soni

c gu

idan

ce a

t Mar

s.•

Laun

chin

g in

200

7 an

d la

ndin

g in

200

8, it

retu

rns t

o pr

opul

sive

soft

land

ing

with

stro

ng si

mila

rity

to th

e V

ikin

g la

ndin

gs.