Features
• Self Alignment Centering device and spring action corrects axial misalignment of 0.060 in (.15 cm) or more and up to 15' (0.26 radian) angular misalignment
• Circular Design Accommodates standard backshells and cable clamps
• Adjustable Spring Characteristics Range of integrated energy Connector "tuned" to application
• Rugged Low Weight Design Receptacle with alignment mechanism and MIL-C-38999 13-35 socket contact arrangement 1.75 oz. (50 gm) Plug with 13-35 pin contacts 0.7 oz. (20 gm)
• Space-grade Materials Low outgassing Atomic Oxygen resistant Minimum volatiles Wide temperature range -85°F (-65°C) to +392°F (200°C)
• Environmental Sealing
• Anti-bind Rolloff Nose
• The Model 1179 connector uses matched internal springs, low force contacts and custom, spring-loaded mounts to absorb perturbations, structural interference and surface motions caused by the irregular reactive forces generated during demating.
• The internal springs are sized to balance the necessary demate energy with the sum of all energy from contact friction, external springs and misalignment drag acting to resist the demate.
Specifications
The Model 1179 connector is designed to operate in the most dynamic environments at 91.2gRMS random vibration with shock levels over 25,000g.
It comes in sizes 13, 17 and 25. Additional insert arrangements, other than those shown in Table I, can be specified. Contact the factory for assistance in achieving your specific requirements.
The connector also has a spring loaded mounting that tolerates a 5° misalignment during connector mating. It is also vented to endure atmospheric decay and is outgassed to a total mass loss less than 1% with collected volatile condensable material less than 0.1% The Model 1179 readily incorporates Cooper Interconnect's Technology Breech-Lok® insert assemblies. |
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MODEL 1179 LOW IMPARTED IMPULSE CONNECTOR
The Model 1179 Low Imparted Impulse Connector is qualified to and has flown on the ORBCOMM satellite, as well as the Taurus and Pegasus Launch Vehicles.
Sensitive satellite and space missions cannot tolerate perturbations, structural interference, or surface motions caused by reactive forces generated during connector demating. Cooper Interconnect has developed a special low imparted energy connector that can be demated without transferring any reactive impulse to the adjacent vehicle structure. The design uses matched spring forces, low force contacts, and custom spring-loaded mounts to balance the energy of connector demating.
These low imparted impulse connectors are used as the umbilical connectors on the ORBCOMM" satellite constellation. They contain internal springs that are sized to balance the demate energy (force x deflection) with the sum of all energy (contact friction, external springs, misalignment drag, etc.) acting to resist the demate. This permits soft separation of adjacent mounting surfaces without danger of undesirable connector-caused "kick off' or reactive motion.
These connectors use special centering devices to act as a "compliance mechanism", ensuring that the connector plug and receptacle are easily mated and demated, even when their mounting structures are severely misaligned. The centering devices allow one or both housings to shift or "float" on their mounts to compensate for linear and angular misalignment. The use of an anti-bind rolloff nose on the connector plug and the self-centering feature of the alignment action bring the connector halves smoothly together for mating. The design also prevents binding during connector demate.
Low Force Contacts
Cooper Interconnect's Model 1179 uses special fine wire contacts with mating Spring-Loaded Compliance and unmating forces that are only 30 percent of those allowed by Mechanism Overcomes MIL-C-38999. Manufacturing is highly controlled and there is little variance inwpe43259.gif (15576 bytes) force between individual contacts, allowing precise Misalignment and Permits control of the connectors net energy. The contacts Blind Mate and Demate have been qualified for space mission use by Self Alignment NASA Goddard Space Flight Center. Twenty-two No. 22 contacts are housed in a MIL-C-38999 size 13-35 insert for the Model 1179 used on the ORBCOMM satellites. The low imparted energy design is available in other connector sizes and contact arrangements.
ORBCOMM is a trademark of Orbital Sciences Corporation.
| Specifications: |
Shell size 13 |
Shell sizes 17 & 25 |
| Mechanical |
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| separation Force: |
0.0 to 0.5 lbs. |
-1.0 to +10.0 lbs. |
| Imparted Energy Matching: |
</=0.5 in-lb |
No requirement |
| Mating Misalignment: |
5° maximum |
Same |
| Pin Engagement: |
0.066 (RSS) inches Min. |
Same |
| Shelf Life: |
6 years minimum |
Same |
| Outgassing: |
TML </=1% and CVCM </=0.1% (ASTM-E-595). |
Same |
| Electrical |
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| Contact Resistance: |
</=0.05 ohm |
Same |
| Dielectric Withstanding Voltage: |
1300 VAC rms, 60Hz |
Same |
| Isolation: |
>1.0 Mohm |
Same |
| Environmental |
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| Acceleration:(steady state) |
Withstands steady-state accelerations of +/-11g in axial direction and +/-4g in each of two orthogonal lateral directions. Assumes a maximum unsupported cable mass of 0.6 lbs. 1000g peak. |
Withstands steady-state accelerations of +/-10.5g in each of two orthogonal lateral directions. Assumes a maximum unsupported cable mass of
.25 lbs. |
| Shock: |
No mechanical degradation when subject to a shock of 16,000g |
Same |
| Operating Temperature: |
-67°F to +165°F (-55°C to +74°) |
29°F to +165°F (-34°C to +74°) |
| Operational Humidity: |
80% maximum |
Same |
| NonOperational Humidity |
90% with no condensation |
Same |
| Space Vacuum: |
One atmosphere to 0.0133 Pa (0.0001 Torr) |
Same |
| Depressurization/Venting |
3.5 kPa per second atmospheric pressure decay. |
3.2 kPa per second |
| Part Number |
Shell Type |
Shell Size/Insert
Arrangement |
No./Size of Contacts |
| 1179-400-108 |
Receptacle |
13-35 |
22/#22D |
| 1179-300-108 |
Plug |
13-35 |
22/#22D |
| 1179-450-118 |
Receptacle |
17-26 |
26/#20 |
| 1179-350-118 |
Plug | 17-26 |
26/#20 |
| 1179-450-119 |
Receptacle |
17-35 |
55/#22D |
| 1179-350-119 |
Plug |
17-35 |
55/#22D |
| 1179-800-101 |
Receptacle |
25-4 |
48/#20 + 8/#16 |
| 1179-700-101 |
Plug |
25-4 |
48/#20 + 8/#16 |
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