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