French German Research Institute of Saint Louis | Date: 2016-10-26
An increased range guided projectile includes overcaliber lateral moment reducing wings (10) that can be deployed. The lateral moment reducing wings (10) are designed and arranged behind the center of gravity (S) in the tail direction on the guided projectile (1) so that the pitching moment derivative coefficient (C_(m)) of the guided projectile (1) is in the range of 0.5, if the guided projectile (1) has a speed that is in the speed range of Mach 0.4 to 0.8; the lateral moment reducing wings (10) are in their deployed position; and, the canard guide device (20) does not exert any guiding moments.
Agency: European Commission | Branch: FP7 | Program: CP | Phase: SEC-2010.1.3-2 | Award Amount: 3.60M | Year: 2011
The CONPHIRMER consortium has come together to put into the hands of customs officers and other agents of law enforcement a portable and easy-to-use sensor for telling genuine medicines from fakes without having to remove the medicines from their packaging. With this device agencies charged with tackling the growing menace of the trafficking in counterfeit medicines will be able to screen packaged pharmaceuticals at EU borders and airports quickly and accurately using a non-invasive and non-destructive technology that uses only harmless radio waves. The proposal is for a three-year programme leading to the trialing of a prototype, portable, handheld scanner, that will draw on the expertise of seven organisations in five states, including two recent additions to the EU family, Poland and Slovenia. The technology employed will be based on quadrupole resonance (QR), a radiofrequency (RF) spectroscopic technique that has already been developed and deployed for the detection of concealed explosives. The completed prototype will not require operators to have special chemical or technical knowledge to deploy it, allowing training in its use to be completed quickly; and it will utilise only easy to source RF and electrical parts, unlike alternative technologies such as Raman, infra-red or terahertz spectroscopic methods. It will also offer a clear advantage over these other technologies in that RF can penetrate even multiple layers of packaging material, allowing for scans to be carried out without the need to remove pharmaceutical products from their packaging.
Eichhorn M.,French German Research Institute of Saint Louis
Optics Letters | Year: 2011
First results on a diode-pumped multikilowatt-class Er3+:YAG solid-state heat-capacity laser (SSHCL) are reported. The laser achieves an output power of 4650Wand output energies in excess of 440 J. A moderate crystal temperature increase due to crystal heating of 56.7 K/s is measured at 11.3 kW of pump power and the temperature-related power drop is determined to 8.8 W/K. The presented work is believed to be the first multi-kilowatt-class resonantly diodepumped Er3+:YAG laser. © 2011 Optical Society of America.
Schellhorn M.,French German Research Institute of Saint Louis
Applied Physics B: Lasers and Optics | Year: 2011
Singly 0.5 at.% Ho doped crystals of YLiF4 (YLF) and LuLiF 4 (LLF) are studied under identical pump conditions in continuous-wave (CW) and Q-switched operation. Longitudinal end-pumped CW laser performance shows Ho:LLF to have a slightly lower threshold and a slightly higher slope efficiency with respect to absorbed pump power than Ho:YLF. Both lasers were operated on π-polarization. At a cavity output coupling of 20% and a crystal length of 30 mm, the Ho:LLF (Ho:YLF) laser yielded 18.8 W (18 W) of CW output at a wavelength of 2067.8 nm (2064.0 nm) for 41.4 W (42.2 W) of absorbed pump power with a slope efficiency of 67.1% (65.6%) and an optical-to-optical efficiency of 45.4% (42.6%) with respect to absorbed pump power. With the same output coupling and a crystal length of 40 mm, the Ho:LLF (Ho:YLF) laser yielded 20.5 W (18.1 W) of CW output at a wavelength of 2067.7 nm (2064.3 nm) for 51.5 W (50.0 W) of absorbed pump power with a slope efficiency of 58.4% (55.4%) and an optical-to-optical efficiency of 39.8 (36.1%) with respect to absorbed pump power. The influence of the temperature of the cooling mount on CW laser performance was studied and showed very similar results for both laser materials. At full pump power, a slope of-155 mW/°C (-149 mW/°C) was observed for the Ho:LLF (Ho:YLF) laser with a crystal length of 30 mm. In Q-switched operation, the Ho:LLF (Ho:YLF) laser produced 37 mJ (38.5 mJ) at a repetition rate of 100 Hz with a pulse duration of 38 ns (35 ns) at a wavelength of 2053.1 nm (2050.2 nm) with a slope efficiency of 30.3% (31%) and an optical-to-optical efficiency of 14.2% (13.9%) with respect to absorbed pump power. The beam quality was nearly diffraction limited (M2 < 1.1). © Springer-Verlag 2011.
Cheinet S.,French German Research Institute of Saint Louis
Journal of the Acoustical Society of America | Year: 2012
The present study formulates a consistent method to simulate the outdoor, near-surface sound propagation through realistic refractive conditions. The correlated atmospheric stratification and turbulence properties are derived from standard meteorological quantities through flux-profile similarity relationships. The propagation of a monochromatic sound field is simulated in presence of the turbulence and stratification effects and an impedance ground. The propagation model uses a numerical solution of a second-order moment parabolic equation, which is introduced and evaluated. The so-formed coupled atmospheric-acoustic model is used to systematically investigate the sound levels in near-surface refractive shadows. In an illustrative propagation scenario, the shadow zone sound levels are predicted to show significant variations with the meteorological conditions. Specifically, the sound levels decrease with the adverse wind, as a consequence of enhanced mean upward refraction. Conversely, they increase with the absolute value of the surface heat flux, as a consequence of enhanced turbulence scattering. Implications for the assessment of the sound levels in shadow zones are discussed. © 2012 Acoustical Society of America.
Schellhorn M.,French German Research Institute of Saint Louis
Optics Letters | Year: 2010
A Q-switched Trn:fiber-laser-pumped Ho : LuLiF4 laser is reported that has been optimized for high-energy pulses at low repetition rates. Operating at 100 Hz, a pulse energy of 24.8 mJ with pulse widths of 47 ns at a wavelength of 2052 nm was achieved. The beam propagation factor (M2) was measured to be ∼1.04 at the maximum pump power, confirming fundamental transverse mode (TEM00) operation. Starting the pump laser at maximum power, the pulse energies of each of the first 10 pulses are >47 mJ. This strong influence of crystal temperature on laser performance is discussed with the prospect for further improvement of the laser efficiency. © 2010 Optical Society of America.
Agency: European Commission | Branch: FP7 | Program: CP | Phase: SEC-2009-2.2-01 | Award Amount: 21.64M | Year: 2010
Facing the problem of enhancing the railway security with a systematic top-down approach (i.e. to search for an all-inclusive solution valid for all the conceivable threat scenarios) is judged by PROTECTRAIL members too ambitious even if it could generate potential economies of scale and effort rationalisation. The proposed PROTECTRAIL approach is therefore to split the problem of making the railway more secure into smaller asset-specific security problems (missions) for which it is easier to reach satisfactory solutions applicable and usable in different threat scenarios. Each sub-mission could be therefore better oriented to particularly significant areas of interest, resulting from risk analysis or from rail operator priorities. In a clear view of scope and performance goals, for each sub mission it will be easier to define, research and develop solutions in terms of architectures, technology deployment, as well as the necessary procedures, organizations to manage the specific issue. The PROTECTRAIL challenge is therefore to make interoperable the single asset-specific solutions and to conceive and design a modular architectural framework where each asset-specific solution can be plugged, that is the basis to assure a streamlined process of federation, integration and interoperability of respective solutions. The PROTECTRAIL project will address the following security sub-missions: protection of signal and power distribution systems against any terrorism act, track clearance, clearance of trains before and after daily use, staff clearance, luggage clearance control, passenger clearance control, freight clearance control, tracking and monitoring of rolling stock carrying dangerous goods, protection of communication and information systems, stations, buildings and infrastructure protection.
Agency: European Commission | Branch: FP7 | Program: CP-FP | Phase: NMP.2013.1.2-1 | Award Amount: 4.94M | Year: 2013
IAQ is a crucial factor for humans apperception. It is proven that air quality affects the health and the well-being of people. IAQSense focuses on R&D to develop a new nanotechnology based on innovative sensor system, miniaturized, low cost for mass produced sensors. The main technology innovation is based on surface ion mobility dynamics, it separates each gas component and its concentration like a mass spectrometer and allows high sensitivity fast multi-gas detection, in a way never seen before. IAQSense Project will characterize, monitor and improve IAQ in an innovative way. To enlarge the field of detection, the sensor system includes in total 3 patented technologies with biomolecule detection and security related nanotechnologies. IAQsense objectives are to develop sensor systems and reach TRL6, including all electronics, pattern detection firmware and validate these systems and their impact in real environments (building, health, hazards scenarios). Ability for mass production and low cost are mandatory requirements. Developments include integrated IC for real time gas pattern processing with special architecture for low power and energy management; test and validation; predictive numerical models; implementation into buildings; preparation for industrialization. IAQSense brings a unique solution for VOC sensing in a growing sensor market and is participating in the innovation and European competitiveness while providing a strategic contribution to the European industry. IAQSense will-provide a major step in analysis and control of IAQ on every place, home, office, vehicles, and contributes to the optimum reduction in energy consumption, finally, it will pave the way for integration into portable devices for the best of future applications in health and security. The consortium is composed of 4 SMEs, 3 industrial, 3 research institutes. The project will last 3 years and will deliver a complete sensor system.
French National Center for Scientific Research and French German Research Institute of Saint Louis | Date: 2013-02-07
The invention relates to the field of preparing nanoparticles. In particular, the invention provides a method for preparing organic or inorganic nanoparticles by instantaneous evaporation or flash evaporation, e.g. for the manufacture of nanoparticles of fertilizers, pharmaceutical or phytopharmaceutical active ingredients, or insensitive energy materials.
French German Research Institute of Saint Louis and French National Center for Scientific Research | Date: 2013-02-28
The present invention relates to the field of manufacturing nanoparticles, and specifically to a method for manufacturing diamond nanoparticles, or nanodiamonds, by detonation at least one explosive charge, wherein said at least one explosive charge is nanostructured.