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Briefs

Unmanned Systems

Experimental Assessment of Entanglement for an Unmanned Underwater Vehicle with an Open, Three-Bladed Propeller

This research evaluates the entanglement of an unmanned underwater vehicle (UUV) operating in marine vegetation common to...

Briefs

Manufacturing & Prototyping

Fabrication and Testing of High-Speed Single-Rotor and Compound-Rotor Systems

The X2 Technology Demonstrator recently achieved a level flight speed over 250 knots, proving the basic concept of the coaxial compound configuration.

Articles

Propulsion

Model-Based Analysis of E-Motor Designs

In the auto industry’s shift toward electric vehicles (EV), permanent magnet motors (PMMs) are increasingly serving a variety of roles, including the vehicle’s traction motor and various...

Technology Report

Propulsion

Tula DMD Aims for More-Efficient E-Machines

The race is on among OEMs and suppliers to optimize the efficiency, performance and cost of electric-vehicle (EV) propulsion systems. Electric machines have moved to the front of the...

Briefs

Test & Measurement

Instrumentation for Fabrication and Testing of High-Speed Single-Rotor and Compound-Rotor Systems

To support the development of next-generation rotorcraft, precision data acquisition is required.

Articles

Mechanical & Fluid Systems

Advanced Assembly Solutions for the Airbus RACER Joined-Wing Configuration

The Rapid And Cost Effective Rotorcraft (RACER) demonstrator is being developed by Airbus Helicopters (AH) to further validate the compound rotorcraft configuration.

Application Briefs

Software

Turbine Rotor Assembly Systems

RPI UK has installed two integrated rotor measurement and assembly platforms (iMAPs) at Atlanta-based Delta Airlines;

News

Manned Systems

UAV Turbines Designs Purpose-Built Microturbine Engine for Class 3 and 4 UAVs

UAV Turbines, Inc. has developed a new microturbine, turboprop engine designed for defense and commercial Group 3 and 4 unmanned aerial vehicle (UAV) or...

News

Manned Systems

Sikorsky-Boeing’s FVL Contender Takes Flight

The Sikorsky-Boeing SB-1 Defiant (stylized as “SB>1 DEFIANT”) compound helicopter flew for the first time at Sikorsky’s West Palm Beach, Florida facility. Unlike current rotorcraft,...

News

Propulsion

Sikorsky, Boeing Debut Future Vertical Lift Dual-Rotor Design with SB>1 DEFIANT Helicopter

Sikorsky, a Lockheed Martin company (NYSE:LMT), in Stratford, Connecticut, and Boeing Defense, Space & Security (NYSE:BA) in Berkeley, Missouri,...

News

Aerospace

NASA and AeroVironment Are Building a Helicopter for Mars

Last week, AeroVironment, Inc. of Monrovia, Calif. revealed its critical role in collaborating with NASA’s Jet Propulsion Laboratory (JPL) in Pasadena, Calif. to build the...

News

Defense

AeroVironment Releases New Puma 3

Last month, AeroVironment, Inc. began accepting orders for their new Puma 3 unmanned aerial system (UAS). The company, which also manufacturers UASs for commercial applications, developed the Puma 3...

News

Power

UAV Turbines to Tackle 200-Hp Class UAV Engines for U.S. Army

With successes in the 50-shp class gas turbine engine class for unmanned aerial vehicles (UAVs), UAV Turbines has reached an agreement with the U.S. Army’s Reliable Advanced...

Application Briefs

Sensors/Data Acquisition

Hull Vibration Monitoring System

Brüel & Kjær
Nærum, Denmark
+45 7741 2000
For more info click here

BAE Systems has awarded Brüel & Kjær a Design Development Agreement to deliver a Hull Vibration Monitoring...

Briefs

Materials

Spectrum Fatigue of 7075-T651 Aluminum Alloy Under Overloading and Underloading

Most structural members and machine components are subjected in service to cyclic loadings of varying amplitude. The variation in stress level follows either a...

Application Briefs

Aerospace

Clean Sky Open Rotor Engine Components

+44 (0)1527 517 715
www.gkn.com/aerospace

GKN Aerospace has delivered the two rotating frames for a major research program exploring open rotor aero-engine designs with a goal of achieving a 20%...

Application Briefs

Aerospace

Upmast Radar Systems

Kelvin Hughes
Enfield, UK
+44 19 9280 5200
www.kelvinhughes.com

Kelvin Hughes recently installed its new SharpEye™ upmast radar system on four new vessels commissioned by the Trinidad and Tobago...

Technology Update

Aerospace

Sikorsky’s All-New Raider Helicopter Prototype is Ready to Fly

Sikorsky Aircraft unveiled in early October the first of two S-97 Raider lightweight tactical helicopter prototypes. In 2015 Sikorsky plans to offer the S-97 as a replacement...

Briefs

Mechanical & Fluid Systems

Stability of Rotors Supported by Hydrodynamic Film Bearings

The document, "Hydrodynamic Fluid Film Bearings and Their Effect on the Stability of Rotating Machinery" represents a lecture in a series "Design and Analysis of High-Speed Pumps," held in 2006 under the auspices of the North Atlantic Treaty Organization. The document introduces the...

Briefs

Mechanical & Fluid Systems

Generic Miniature Airplane for Research and Development

The Air Force Research Laboratory has promulgated the geometrical design of a miniature airplane denoted the Generic Micro Aerial Vehicle (GENMAV). This design is intended to serve as a...

Briefs

Information Technology

Parametric Design of Three-Dimensional Hydrodynamic Shapes

A method of parametric design of bodies having arbitrary three- dimensional shapes has been invented. The method is intended mainly for use in the design, analysis, and manufacture...

Briefs

Electronics & Computers

Miniature Semiconductor Diodes as Pumps and Motors

Experiments have shown that when a miniature semiconductor diode floats in an aqueous solution and an alternating electric field is applied, (1) the diode rectifies the alternating potential...