Archive for the ‘Milestones’ Category

PostHeaderIcon Vibration Testing of TRSI satellite

PostHeaderIcon ADS-B PocketQube is taking shape


Here is a running ADS-B test on the engineering model inner structure of the satellite.
The signal reception is great, getting more than 44dB above the noisefloor (upper graph, 19.9mV/dB), a rare situation though, because it´s not much nearby traffic here.
Lower graph shows a weak signal, barely above noise at -92dBm. The bits still look decodable – I´ll continue optimizing. It´s a bit of a challenge.
In average, there are many many signals per second with 10-20dB over noisefloor with no visible planes.

PostHeaderIcon WREN Integration into UNISAT-5 in Rome/Italy


PostHeaderIcon Solar Panel Test


The test of our new solar panels was successful. The power output is 6 times the value given in the datasheet.

PostHeaderIcon Milling the Shakerbox


Milling the Shakerbox. Thanx to Jacek Wisniowski for technical support.



A development model of WREN in the shakerbox frame

PostHeaderIcon SSTV abilty added to the WREN PocketQub

sstvThis is the first picture transmitted from the satellite in Martin-1 SSTV format. Thanx for this lovely support to my sweetheart Rong

Find out more about SSTV

PostHeaderIcon 8-Channel Plasma Thruster Vacuum test

Succesful test of my 8-Channel pulsed plasma thruster. Let´s see how it performs in orbit.

Paul Kocyla at the vacuum test chamber of the FH-Aachen University

PostHeaderIcon RCS & IMU module (rotation/acceleration/reaction control subsystem)

Rotation rate estimation for our RCS+IMU (reaction control system/inertial measuring unit)
The module includes a 3-axes rate gyro, 3-axes accelerometer and control hardware for microthrusters.
It will work together with the optical navigation module, reaction wheels and thrusters beeing able to determine its attitude and position in space, tracing its flight path and perform desaturation and midcourse corrections.
Fixed point arithmetic on quaternions and kalman filters will be used for fast and accurate calculations. (Paul Kocyla Sep2011)

PostHeaderIcon Lecture on Plasma Electrolysis Propulsion

Desktop Delta-V workshop in Providence, RI

Paul Kocyla joined the Desktop Delta-V workshop this year. The topic was safe propulsion for small spacecrafts.
He gave a lecture on plasma electrolysis propulsion for cubesats.

PostHeaderIcon Optical Navigation Module V2.0

Navigation module prototype v2.0

The next navigation module prototype is ready for testing under real space conditions. This includes high vacuum, radiation, sunlight exposure and a shaking test to simulate forces during the launch.
The module is an embedded camera system with fast algorithms for determining the position of the sun and planets´ horizons for estimation of attitude and position in space. Star tracking tests are pending.
A monitoring board (right side) is connected to the module to measure the temperatures of the module´s components and all system voltages and currents. (10 Sep. 2011, Paul Kocyla)