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Multi-Axis Accelerometer Package

Applied Technology Associates (ATA) designs, builds, and tests flight-ready multi-axis accelerometer packages such as the Accelerometer Assembly Unit (AAU) and Delta Velocity Accelerometer (DVA), both shown. These high accuracy accelerometer packages provide the necessary measurements to precisely determine three-axis acceleration during propulsion burns that are not normally provided on a payload bus navigation system. The unit supports satellite guidance and control subsystems by providing precision navigational information about delta velocity changes due to propulsion burns during satellite maneuvers. 

 

Accelerometer Assembly Unit 

Accelerometer Assembly Unit (AAU)
 

The Accelerometer Assembly Unit conceptual rendering shows how ATA combines three commercially available accelerometers into a three-axis fully-functional package through the use of custom, space-qualified signal processing.

 Delta Velocity Accelerometer
Delta Velocity Accelerometer (DVA)

For product specification sheet click here.

Multi-Axis Accelerometer Packages 

Our custom precision accelerometer package measures low linear acceleration on satellites or other precision platforms. The package uses six high-precision accelerometers to provide simultaneous acceleration signals along three orthogonal axes (two per axis) with a command able dual range of +/- 25mG and +/- 1000mG over a 16Hz bandwidth. Two independent sensor sets (dual redundant) are provided in a single enclosure. The unit provides pulse train outputs with frequency proportional to acceleration, and temperature sensor outputs with voltage proportional to temperature. All inputs and outputs are dual redundant. Separate connectors are used for power and signal connections. A bias input is provided to offset earth G bias in the sensitive range for ground testing. A calibration signal is provided internally for on-orbit two point scale factor calibration. 
  • - Space Qualifiable Design

  • - Spacecraft Bus Attitude Control

  • - Measurement of Acceleration on Precision
      Platforms Like Satellites or UAVs

  • - Orbital Spacecraft Attitude Control

Unique Benefits of Our Solution

These high accuracy accelerometer packages provide the customer with the necessary measurements to precisely determine three-axis acceleration during propulsion burns that are not normally provided on a payload bus navigation system. All inputs and outputs are dual redundant to improve reliability. They are fully space-qualified, with full documentation available on request. 

Parameter Range*

Parameter

DVA

AAU

Units

1.    Size 175 x 175 x 175 195 x 66 x 85 mm
2.    Weight <7 1.3 kg
3.    Power <35 <4 Watts
4.    Scale Factor Stability <1000 --- ppm
5.    Non-Linearity <1000 --- ppm
6.    SF Temperature Stability <150 --- ppm / C
7.    Output Noise <2 <10 µG rms
8.    Temperature Limits -20 to 66 -10 to 60 C
9.    Pressure Limits Amb. to <10-5 Amb. to <10-5 Torr
10. Input Voltage Limits 0 to 40 22 to 34  VDC

 *Specifications subject to change without notice.

 
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