The Vega development programme is performing a crucial series of tests during 2006, including engine firings, mechanical and electrical performance verifications, and system-level trials. Among the many test campaigns, measuring the performance of the control loop of Vega’s first stage was started in May.
Vega's first stage, known as P80, is a solid-fuel rocket motor which includes a Thrust Vector Control (TVC) system consisting of two electromechanical actuators that operate a movable nozzle. The TVC system moves the nozzle to control the pitch and yaw of the launcher (the attitude of the vehicle in relation to the flight direction) during flight.
In order to characterise the TVC behaviour under the various conditions that could occur during flight and to verify the functionality of the control loop, a dedicated validation facility has been constructed at ELV SpA, in Colleferro (Italy).
The TVC Validation Model allows examination of all aspects of system performance using fully representative hardware, specifically:- the two electromechanical actuators, designed and manufactured by SABCA of Belgium
- a battery set employing lithium-ion technology – to provide a more complete representation of operational conditions in some test scenarios – designed and manufactured by Saft of France.
The design, manufacture and assembly of the components of the TVC Validation Model have been lead by Europropulsion SA, a jointly-owned subsidiary of Snecma Propulsion Solide (France) and Avio SpA (Italy), which is the Prime Contractor for the P80 main engine. The construction of the test plant, including mechanical parts and ground support equipment for electronic command and measurement acquisition, has been carried out under the responsibility of ELV SpA, the Prime Contractor for the Vega launch vehicle. The management of the P80 demonstrator programme is under the responsibility of the P80 Integrated Project Team (ASI , CNES and ESA), located at the CNES facility in Evry, France.
The TVC subsystem tests are expected to last for several months. They will allow checking of the control sequence that will be used during the first P80 motor static firing test, scheduled to be conducted in Kourou during the last quarter of 2006.
At a later stage, during the system test campaigns, the TVC Validation Model will also be used for overall system verification. It will be controlled by a test version of the Vega onboard computer and flight software, making use of the inertial measurement system simulator and the simulated flight dynamics environment.
Miguel Lopez | alfa
Quantum bugs, meet your new swatter
20.08.2018 | Rice University
Metamolds: Molding a mold
20.08.2018 | Institute of Science and Technology Austria
There are currently great hopes for solid-state batteries. They contain no liquid parts that could leak or catch fire. For this reason, they do not require cooling and are considered to be much safer, more reliable, and longer lasting than traditional lithium-ion batteries. Jülich scientists have now introduced a new concept that allows currents up to ten times greater during charging and discharging than previously described in the literature. The improvement was achieved by a “clever” choice of materials with a focus on consistently good compatibility. All components were made from phosphate compounds, which are well matched both chemically and mechanically.
The low current is considered one of the biggest hurdles in the development of solid-state batteries. It is the reason why the batteries take a relatively long...
New design tool automatically creates nanostructure 3D-print templates for user-given colors
Scientists present work at prestigious SIGGRAPH conference
Most of the objects we see are colored by pigments, but using pigments has disadvantages: such colors can fade, industrial pigments are often toxic, and...
Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...
Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.
When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...
Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.
Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....
17.08.2018 | Event News
08.08.2018 | Event News
27.07.2018 | Event News
20.08.2018 | Information Technology
20.08.2018 | Life Sciences
20.08.2018 | Information Technology