Attachment_0009_Reduced_LAT_and_FAT.pdf

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M772 AND M776 MTSQ FUZE
Solicitation number
W52P1J16R0131
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Attachment 0009 - Reduced LAT and FAT Testing

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Attachment 0009

Reduced Lot Acceptance Testing (LAT) and First Article Testing (FAT) for M772 and M776

REFERENCE:

a. W52P1J-16-R-0131, M776/M772, Fuze Request for Proposal (RFP)

b. MIL-F-70713, & MIL-F-70620A, Fuze Specification

DISCUSSION: A reduced test program has been devised to reduce the cost of LAT and FAT for the M772 & M776 fuzes, and to more accurately reflect the maturity of the MTSQ fuze design. Input from JUNGHANS MicroTech, an ARDEC quality assurance were used to devise a reduced sampling plan.

The proposed LAT for the M772 and M776 fuzes are listed below in Tables 1 and 2, respectively.

Group Charge QE (mils) Temp (F) Set Time (s) Samples Comments 1 12 Arming Safety 2 1 800-1000 70 16.5 10 Post Trans-Vibration 5 4 1400 70 44 10 Reduced from 20 to 10 6 2 1156 -50 28 10 Reduced from 20 to 10 7 2 1156 145 28 10 Reduced from 20 to 10

Total Samples: 52 Table 1 Proposed M772 LAT

Group Charge QE (mils) Temp (F) Set Time (s) Samples Coomments 1 12 Arming Safety 2 1 1511 70 19 10 Post Trans-Vibration 4 4 800 70 26 10 Reduced from 20 to 10 5 4 800 -50 26 10 6 4 800 145 26 10

Total Samples: 52 Table 2 Proposed M776 LAT

The proposed First Article Ballistic Test for M772 MTSQ Fuze are listed below in Tables 3 & 4.

Arming Safety Test (70°F/21°C) Charge QE (mils) Set Quantity 1 ~ 0 S 12

Table 3 Proposed Arming Safety Test for M772

Mechanical Time Functioning Test Group Charge QE (mils) Temp (F) Set Time (s) Samples Comments

1 1 800-1000 70 16.5 10 Post Trans Vib 2 4 1400 70 44 15 3 2 1156 -50 28 15 4 2 1156 145 28 15

Table 4 Proposed Time Function Test for M772

The proposed First Article Ballistic Test for M776 MTSQ Fuze are listed below in Tables 5 & 6.

Arming Safety Test (70°F/21°C)

Cartridge Charge QE (mils) Set Quantity Inert 60mm 1 ~ 0 S 12

Table 5 Proposed M776 Arming Safety Test

Mechanical Time Functioning Test Cartridge Charge QE (mils) Temp Set (sec) Quantity Comments

60mm 1 1511 70°F (21°C) 19.0 10 Post Trans Vib 60mm 4 800 70°F (21°C) 26.0 15 60mm 4 800 -50°F (-46°C) 26.0 15 60mm 4 800 145°F (63°C) 26.0 15

Table 6 Proposed M776 Time Function Test

File details come from the government source that posted it. Updated .