The pair of “low-observable” Sikorsky Black Hawks used in the raid by U.S. forces against terrorist Osama bin Laden’s Pakistani compound May 2 were kitted with a variety of stealth and radar-defeating features that had been in development since the 1970s, and maybe longer. The helicopters came to light after one had to be left behind and intentionally detonated after apparently clipping a compound wall and making a hard landing.
The past couple of years have not been the best of times for a would-be developer to sign deals with industrial partners and customer-users for a new supersonic business jet (SSBJ), but Aerion has been hanging in there and is now seeking to make subsonic aircraft aerodynamically slicker.
Hawker Beechcraft GCS also announced here at EBACE its development of an aftermarket retrofit kit for Hawker winglets on the Hawker 750. Emmanuel Muntmark with Monsson S.A. of Romania, is the launch customer for the modification. Bucharest-based Alfa Air flies Muntmark’s Hawker 750 for charter.
A bilateral project between NASA and German aerospace research center DLR is expected to focus on the role rotor tip vortices play in helicopter noise by recording vortex velocity fields and rotor-blade deformations by using a test stand with a variety of high-speed cameras, lasers and LEDs that will make the vortices visible. Eventually research will progress to actual helicopters.
The innate intelligence of fly-by-wire (FBW) flight controls makes them a natural for reducing the relatively high pilot workload that can come with rotary wings.
The Pentagon’s Naval Research office has selected Emteq to create a rotorblade tip lighting system.
Dassault Aviation conducted a "successful" flight test to evaluate laminar wings for large business jets. The flight was performed at the companyπs flight-test center in Istres, France, using a Falcon 7X equipped with an infrared camera to measure differences in surface temperatures between laminar and turbulent areas of the horizontal tailplane.
A proposed FAA Airworthiness Directive targets the Embraer Phenom 100’s angle-of-attack (AOA) system. The FAA believes the accumulation of moisture between the AOA vane base assembly and the stationary ring of the sensor’s body can freeze under certain conditions.
Stratos Aircraft has received some external funding and in April and May will conduct wind-tunnel tests of a scale model of the four- to five-place single-engine Stratos 714 very light jet. The tests will take five to ten days using aone-eighth-scale model of the jet and are intended to verify computational fluid dynamics studies of the design.