Exposed Facility Flyer Unit
The Exposed Facility Flier Unit (EFFU) was situated
on the top of the SFU. The top surface was covered in Teflon SSM
thermal control material, and faced directly into the Sun for the entire
duration of the mission. The sides of the EFFU were protected by
Kapton MLI, and were subjected to shielding from other components on the
top surface. Flux determination for these side faces must therefore
take this into account.
The images below were taken soon after SFU retrieval,
at Astrotech in Florida. The left-hand image shows one of the side
faces of the EFFU (the rhomboid in the background, flanked by the slender
XXXX). In the foreground is the grapple used during retrieval of
the satellite. The right-hand image shows the top face of the EFFU,
which faced directly into the Sun.
We scanned the EFFU MLI side MLI surfaces for perforations over an X-day
period, and found a total of X impacts. Flux data from this surface
are directly comparable to solar array flux data taken from other spacecraft,
such as EuReCa and the Hubble Space Telescope solar arrays, albeit for
different surface materials.
As for the top surface, we are awaiting results from NASDA, who have
taken it upon themselves to complete the analysis.
EFFU MLI was divided into four segments. The results are given
below.
EFFU
MLI 1 |
Blanket |
ID |
Size (µm) |
# layers
penetrated |
Chemistry |
|
D2 |
28.4 |
|
|
|
B2 |
50.7 |
|
|
|
G1 |
51.2 |
|
|
|
EE1 |
60.8 |
|
|
|
FF1 |
63.0 |
|
|
|
FF2 |
63.1 |
|
|
|
H1 |
65.6 |
|
|
|
K1 |
72.4 |
|
|
|
I4 |
77.4 |
|
|
|
L11 |
77.6 |
|
|
|
M1 |
78.6 |
|
|
|
Q1 |
81.6 |
|
|
|
E2 |
102.8 |
|
|
|
O1 |
108.9 |
|
|
|
A1 |
109.4 |
|
|
|
B3 |
119.6 |
|
|
|
I1 |
126.0 |
|
|
|
C1 |
127.6 |
|
|
|
B1 |
132.9 |
|
|
|
D1 |
151.6 |
|
|
|
E1 |
170.2 |
|
|
|
I3 |
173.5 |
|
|
|
H2 |
199.7 |
|
|
|
T1 |
201.4 |
|
|
|
O2 |
231.5 |
|
|
|
M2 |
254.3 |
|
|
|
I2 |
275.5 |
|
|
Table 1: EFFU MLI 1
EFFU
MLI 2 |
Blanket |
ID |
Size (µm) |
# layers
penetrated |
Chemistry |
|
I1 |
43.5 |
|
|
|
H3 |
50.9 |
|
|
|
H2 |
57.0 |
|
|
|
E4 |
57.1 |
|
|
|
H1 |
62.4 |
|
|
|
L4 |
63.1 |
|
|
|
Cut11 |
65.3 |
|
|
|
M1 |
66.4 |
|
|
|
C6 |
68.2 |
|
|
|
F1 |
68.7 |
|
|
|
L3 |
69.8 |
|
|
|
E2 |
70.2 |
|
|
|
G1 |
71.0 |
|
|
|
Cut4 |
78.3 |
|
|
|
J1 |
80.0 |
|
|
|
C2 |
80.9 |
|
|
|
L5 |
81.4 |
|
|
|
P1 |
83.3 |
|
|
|
C7 |
85.2 |
|
|
|
Q2 |
88.0 |
|
|
|
Cut8 |
89.6 |
|
|
|
O1 |
90.0 |
|
|
|
Cut6 |
93.3 |
|
|
|
L2 |
94.4 |
|
|
|
K1 |
96.9 |
|
|
|
Q1 |
97.3 |
|
|
|
C5 |
102.6 |
|
|
|
D3 |
104.9 |
|
|
|
S1 |
110.7 |
|
|
|
Cut3 |
111.2 |
|
|
|
E1 |
112.2 |
|
|
|
C1 |
113.3 |
|
|
|
N1 |
113.9 |
|
|
|
E3 |
116.7 |
|
|
|
Cut10 |
120.2 |
|
|
|
Cut7 |
121.1 |
|
|
|
Cut1 |
124.6 |
|
|
|
Cut5 |
128.8 |
|
|
|
N2 |
134.5 |
|
|
|
C4 |
136.8 |
|
|
|
B1 |
140.0 |
|
|
|
D4 |
140.4 |
|
|
|
C3 |
150.2 |
|
|
|
U1 |
151.3 |
|
|
|
D2 |
166.3 |
|
|
|
Cut2 |
178.4 |
|
|
|
Cut9 |
181.9 |
|
|
|
D1 |
224.4 |
|
|
|
L1 |
236.4 |
|
|
Table 2: EFFU MLI 2
EFFU
MLI 3 |
Blanket |
ID |
Size (µm) |
# layers
penetrated |
Chemistry |
|
II1 |
40.6 |
|
|
|
C2 |
41.0 |
|
|
|
E1 |
41.3 |
|
|
|
D2 |
44.5 |
|
|
|
E2 |
50.0 |
|
|
|
FF3 |
50.4 |
|
|
|
DD1 |
54.0 |
|
|
|
F3 |
54.2 |
|
|
|
B2 |
60.2 |
|
|
|
FF1 |
60.9 |
|
|
|
I1 |
63.9 |
|
|
|
F2 |
66.9 |
|
|
|
L2 |
67.1 |
|
|
|
CC2 |
67.7 |
|
|
|
LL1 |
68.0 |
|
|
|
B1 |
68.4 |
|
|
|
F1 |
75.4 |
|
|
|
MM1 |
75.6 |
|
|
|
H1 |
78.3 |
|
|
|
L1 |
81.3 |
|
|
|
FF2 |
83.9 |
|
|
|
C3 |
83.9 |
|
|
|
AA2 |
94.9 |
|
|
|
II2 |
96.0 |
|
|
|
KK1 |
97.2 |
|
|
|
AA1 |
101.5 |
|
|
|
C1 |
103.0 |
|
|
|
JJ1 |
103.2 |
|
|
|
T1 |
106.9 |
|
|
|
CC1 |
108.9 |
|
|
|
LL2 |
113.9 |
|
|
|
K1 |
114.1 |
|
|
|
N2 |
117.3 |
|
|
|
D3 |
125.0 |
|
|
|
N3 |
142.3 |
|
|
|
L3 |
148.9 |
|
|
|
A1 |
150.1 |
|
|
|
I2 |
152.5 |
|
|
|
D4 |
183.2 |
|
|
|
AA3 |
187.1 |
|
|
|
NN2 |
190.5 |
|
|
|
N1 |
203.0 |
|
|
|
D1 |
235.6 |
|
|
|
EE1 |
238.2 |
|
|
|
NN1 |
269.1 |
|
|
|
G1 |
613.5 |
|
|
Tabel 2: EFFU MLI 3
EFFU
MLI 4 |
Blanket |
ID |
Size (µm) |
# layers
penetrated |
Chemistry |
|
DD1 |
46.5 |
|
|
|
N1 |
51.9 |
|
|
|
M1 |
58.5 |
|
|
|
C1 |
60.8 |
|
|
|
B2 |
69.4 |
|
|
|
BB1 |
71.6 |
|
|
|
CC1 |
85.6 |
|
|
|
B1 |
87.8 |
|
|
|
K1 |
88.5 |
|
|
|
R1 |
100.9 |
|
|
|
OO1 |
105.8 |
|
|
|
H1 |
106.4 |
|
|
|
DD2 |
108.9 |
|
|
|
T1 |
121.6 |
|
|
|
O1 |
137.0 |
|
|
|
GG1 |
138.5 |
|
|
|
A1 |
147.0 |
|
|
|
M2 |
163.5 |
|
|
|
P1 |
198.6 |
|
|
|
L1 |
350.2 |
|
|
Tabel 2: EFFU MLI 4
| PLU-1 | PLU-2
| PLU-4 | SPLU-1 | SPLU-2
| BSU-1 |
| BSU-2 | Scuff
plates | IRTS | SEM
| EFFU | 2DHV | Solar
arrays |
|