Tag Archives: LEOP

BiSon74-ET-RH Engineering models received

Designed in frame of the Artes 5.2 program ITAR free extended temperature fine sunsensor and intended to be the first small fine sunsensor to be capable of surviving the temperature excursions and radiation exposure experienced when mounted on extendable solar panels of geostationary telecom satellites, The BiSon74-ET-RH is intended to be a unique sensor, providing a cost effective and highly reliable solution to some issues already known for years.

Fine sun sensor - BiSon74-ET-RH Engineering model (ITAR free, extended temperature)

BiSon74-ET-RH Engineering model

In stowed configuration, solar panels quite often obscure the field of view of sunsensors thus hampering effective attitude acquisition during the Launch and Early Orbit Phase (LEOP) of many missions. Mounting a sunsensor on the solar panel until now was not feasible because no generally available sunsensor could handle the temperature ranges associated with this application. In Safe mode operation, the reliability of the solution is of utmost importance, and adding a sunsensor to the solar panel is the most direct and reliable way to measure the orientation of the solar panel. This is why Lens R&D (with support of ESA) is developing and qualifying an extended temperature sunsensor who’s temperature range allows for application at even the most demanding positions on a satellite, be it thin mechanical brackets or solar panels.

Sneak preview BiSon64-B

fine sun sensor - BiSon64-B (baffle for reduced albedo sensitivity, LEO, small satellites)This is a sneak preview of the BiSon64-B and the associated transport package.

The sensor consists of a standards BiSon64 to which a small baffle is added to reduce the influence of albedo signals originating from outside the measurement field of view.

Adding less than 5 grams to the sensors the baffle allows to increase the accuracy of the sensors significantly if albedo signals or reflections from structural parts are present.

Supplier audit Airbus/OneWeb succesfully completed

Airbus / OneWeb supplier audit for fine sun sensors successful completedAfter two days of intensive auditing, today the supplier audit of Airbus/Oneweb was succesfully completed with very good results. The auditing not only comprised a carefull assessment of the procedures and way of working at Lens R&D but also included a company visit to some of our key suppliers (Boers & co and Lasertec)

After two days of information exchange, the meetings concluded with the mutual filling in of an audit matrix.¬†Although this¬†showed that we didn’t get the highest score on maturity for many points, this was not due to the fact that we don’t have the procedures in place or the way of working was not appreciated, but due to the fact that we were asked to offer a project specific design which has yet to be finalized.