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 |