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
Cloud technology: Dynamic certificates make cloud service providers more secure
15.01.2018 | Technische Universität München
New discovery could improve brain-like memory and computing
10.01.2018 | University of Minnesota
On the way to an intelligent laboratory, physicists from Innsbruck and Vienna present an artificial agent that autonomously designs quantum experiments. In initial experiments, the system has independently (re)discovered experimental techniques that are nowadays standard in modern quantum optical laboratories. This shows how machines could play a more creative role in research in the future.
We carry smartphones in our pockets, the streets are dotted with semi-autonomous cars, but in the research laboratory experiments are still being designed by...
What enables electrons to be transferred swiftly, for example during photosynthesis? An interdisciplinary team of researchers has worked out the details of how...
For the first time, scientists have precisely measured the effective electrical charge of a single molecule in solution. This fundamental insight of an SNSF Professor could also pave the way for future medical diagnostics.
Electrical charge is one of the key properties that allows molecules to interact. Life itself depends on this phenomenon: many biological processes involve...
At the JEC World Composite Show in Paris in March 2018, the Fraunhofer Institute for Laser Technology ILT will be focusing on the latest trends and innovations in laser machining of composites. Among other things, researchers at the booth shared with the Aachen Center for Integrative Lightweight Production (AZL) will demonstrate how lasers can be used for joining, structuring, cutting and drilling composite materials.
No other industry has attracted as much public attention to composite materials as the automotive industry, which along with the aerospace industry is a driver...
Scientists at Tokyo Institute of Technology (Tokyo Tech) and Tohoku University have developed high-quality GFO epitaxial films and systematically investigated their ferroelectric and ferromagnetic properties. They also demonstrated the room-temperature magnetocapacitance effects of these GFO thin films.
Multiferroic materials show magnetically driven ferroelectricity. They are attracting increasing attention because of their fascinating properties such as...
08.01.2018 | Event News
11.12.2017 | Event News
08.12.2017 | Event News
19.01.2018 | Materials Sciences
19.01.2018 | Health and Medicine
19.01.2018 | Physics and Astronomy