Hydrodynamic Drag Force Measurement of a Functionalized Surface Exhibiting Superhydrophobic Properties

With superhydrophobic properties being extended to a variety of metallic substrates through the process of ablation due to femto-second laser surface processing (FLSP), it is important to understand the hydrodynamic benefits of such a material, as well as its resiliency. This research focuses on the skin friction drag effects of a superhydrophobic flat plate compared to an untreated flat plate of the same material and geometry. The resiliency of this material will also be tested through the use of an accelerated corrosion fog chamber using both treated and untreated aluminum samples.

Posted in: Briefs, TSP, Aerospace, Lasers, Lasers, Metal finishing, Aluminum alloys, Corrosion resistant alloys, Materials properties

New Products: September 2017 Aerospace & Defense Technology

Measurement Software

Hexagon Manufacturing Intelligence (North Kingstown, RI) has launched PC-DMIS 2017 R2, the latest edition of their popular measurement software. This is the second of two major releases scheduled for PC-DMIS in 2017, with continued service pack updates to ensure maximum reliability of the platform.

Posted in: Products, Aerospace

Missile Test System

Marvin Test Solutions
Irvine, CA

The Indonesian Air Force recently selected Marvin Test Solutions’ MTS-206A Maverick Field Test Set and MTS-916-3 Modular Target Simulator to support testing of their AGM-65 (Maverick) missile and launcher systems, as part of an FMS (Foreign Military Sale) contract. Part of Marvin Test Solutions’ comprehensive suite of test solutions for both legacy and today’s precision-guided “smart” weapon systems, the MTS-206A and MTS-916 provide advanced testing capabilities to maintainers at the intermediate and depot levels.

Posted in: Application Briefs, Defense, Test equipment and instrumentation, Military vehicles and equipment, Missiles

NASA Miniaturizes Century-Old Radio Sounder Technology

A century-old technology that scientists use to probe the ionosphere — the important atmospheric layer that can interfere with the transmission of radio waves — is getting smaller.

Posted in: Articles, Aerospace, RF & Microwave Electronics, Downsizing, Radio equipment, Radio equipment

High-Power Broadband Multispectral Source on a Hybrid Silicon Chip

For applications in manufacturing, remote sensing, medicine, military, and fundamental science, an ideal laser would have high output power and a diffraction-limited beam. The figure-of-merit to describe this property is the brightness, which scales proportional to output power and inverse to the beam quality factor M2.

Posted in: Briefs, TSP, Aerospace, Integrated circuits, Lasers, Waveguides, Integrated circuits, Lasers, Waveguides, Silicon alloys

Eliminating Electrical Arcing in Satellite Systems

In 1995, Boeing Satellite Systems introduced a new family of communication satellite buses, with bodies that contain power, control, and propulsion systems. They used a high-voltage bus connected to a 100V stabilized power source, instead of the standard 27V. This introduced an increase in operating voltage that decreased operating currents and lowered the corresponding ohmic losses in the conductors. However, it also introduced a potentially catastrophic failure to the satellites’ electronic systems: electrical arcing (Figure 1).

Posted in: Articles, Aerospace, Architecture, Connectors and terminals, High voltage systems, Architecture, Connectors and terminals, High voltage systems, Reliability, Reliability, Satellites

Stimulated Brillouin Scattering (SBS) Suppression and Long Delivery Fibers at the Multikilowatt Level with Chirped Seed Lasers

One obstacle in the scaling of high-power fiber lasers arises because of nonlinear effects (e.g., stimulated Brillouin scattering [SBS]) due to the large intensity times length product. Efforts to raise the power threshold include:

Posted in: Briefs, TSP, Aerospace, Fiber optics, Lasers, Fiber optics, Lasers, Performance upgrades

Erbium Doped GaN Lasers by Optical Pumping

The main objective of this research was to construct an optical pump system that would allow the study of Er:GaN materials under 980 nm resonant excitation to be carried out. The results obtained from the optically pumped studies could then be utilized to guide crystal growth and laser design.

Posted in: Briefs, TSP, Aerospace, Lasers, Optics, Lasers, Optics, Materials properties, Refractory materials, Pumps

F-16 Upgrades

Levallois-Peret, France
+33 1 58 63 16 00

Saft was recently selected by Aero Vodochody Aerospace, a leading designer and manufacturer of military and civilian aircraft, for engine starting and emergency backup batteries for the L-39NG jet trainer program. Saft has worked in partnership with Aero Vodochody to develop a new 44 Ah version of its ULM (Ultra Low Maintenance) battery with aerobatic capabilities. It’s not the first time Saft has worked with Aero Vodochody; Saft already supplies batteries for the L-159 and the existing L-39 platforms.

Posted in: Application Briefs, Defense, Lithium-ion batteries, Lithium-ion batteries, Suppliers, Military aircraft

New Class of Excimer-Pumped Atomic Lasers (XPALS)

The focus of this research program was the investigation of XPAL properties, and new pumping schemes, as well as modeling, and measuring critical photoionization and excited state-excited state reaction rates in order to improve the performance of XPALs.

Posted in: Briefs, TSP, Aerospace, Lasers, Lasers, Research and development, Pumps