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Welcome to AED's is Rocket Data-Acquisition System R-DAS website. 

The R-DAS system is used to measure and store analog and digital data gathered during a rocket flight. Furthermore it can be used to set off your pilot and main parachute charges. The R-DAS has been used successfully in HPR rockets and by some of the world's largest aerospace companies. 

News flash: AED Releases the R-DAS Tiny (V4.0). Click here for more details. With the introduction of the R-DAS Tiny, the R-DAS Compact has become obsolete.

 

R-DAS compact (top) and R-DAS classic (bottom, obsolete). Click on picture to enlarge.

The R-DAS has some features not offered by many of the known flight computers:

Easy to configure: Configure the R-DAS system with easy-to-use Windows software: G-switch and/or breaking wire arming, smart recovery (integrating accelerometer, barometric main parachute) and/or timed recovery, barometric altitude for main chute release, extra data-acquisition channels, sampling rate, etc. etc.
Huge amount of data storage: e.g. ambient pressure and acceleration are sampled 200 times per second for more than 8 minutes. At lower sampling rates the sampling time is proportionally longer.
Pre-flight data: the large RAM memory of R-DAS is continuously updated with the last 2 seconds of pre-flight data. After lift-off the unit starts storing the data in EEPROM, starting with the last 2 seconds before lift-off. In this way also pre-flight data is available, e.g. for offset calibration, or drift verification!
Extra analog inputs: 6 analog input channels are available through a 16-pin boxed header for own experiments. This connector also provides your experimental board with a 9V power supply.
4 digital inputs: read and store the status from up to 4 digital inputs.
Program code is field upgradable: simply download future versions of the program code from the web, and upgrade your R-DAS system in minutes.
I2C bus: The I/O connector features a serial I2C-bus. This allows simple extension of the R-DAS with our expansion boards: telemetry, GPS, OSD, igniter board, and 2-axis accelerometer.

Because of its versatility, use of the R-DAS unit is not limited to in-flight data-acquisition. By using the switch (breaking wire) arming it can e.g. be used for data-acquisition of your thrust-bench setup.

R-DAS Specifications:

Acceleration transducer -50..+50 g, 0.1 g resolution (using the newest accelerometer of Analog Devices, the ADXL150)
Pressure transducer 20..105 kPa, 0.09 kPa resolution (Motorola MPXS4100)
6 user available analog input channels, 0..5V, 10 bit
Maximum sampling rates of 8 above channels is 200 samples/second per channel
4 user available digital input channels
2 output stages for pilot and main parachute deployment
Configurable current supply: from capacitor discharge, R-DAS own power supply, or separate battery
High power FET output stages with low internal "ON" resistance
Continuity check with LED's
G-switch and/or breaking-wire arming (selectable make or break contact)
Loud beeper for status indication
512 Kbytes FLASH EEPROM (mapped as: write protected 64 Kbytes boot code, 64 Kbytes program code and 384 Kbytes nonvolatile data storage)
32 Kbytes RAM memory
Reliable professional 2-layer PCB
RS-232 output
Runs on a single 9V battery (any power supply between 9 and 15 V will do)

For more detailed information about the features, specifications and operation see the R-DAS user manual.

If you have any questions, please contact us.

trunk.jpg (34098 bytes)

Back-of-the-trunk data reduction: PC, R-DAS classic (obsolete), engine, rocket and... coffee.