Fluid dynamics

November 11, 2013 - 2:13pm

The FAA published updates to the wake turbulence separation categories on October 22 for Louisville, Miami, Cincinnati, San Francisco, Atlanta and Philadelphia airports based on improved understanding of how wake vortices behave. Categories are now based on weight, certified approach speed and wing characteristics. Special consideration will be given to aircraft with limited ability to counteract adverse rolls.

November 2, 2013 - 1:12am

Among the operational topics for the technical committee at the triennial ICAO Assembly were significant safety issues. One paper from the Russian delegation provided a description of extensive studies of wake vortices, and the development of a wake vortex safety system that would use outputs from ADS-B, Swim and two Aviation System Block Upgrades 1 elements, with pilot alerts transmitted over the anticipated datalinks in that period–that is, by 2018.

October 22, 2013 - 3:50pm
Pilatus Business Aircraft is displaying a mock-up of its twinjet PC-24, which combines light-jet operating economics with super-midsize jet capabilities.

Pilatus Business Aircraft is displaying a mock-up of its twinjet PC-24, announced earlier this year at EBACE, here at its NBAA booth (No. C12216) near the indoor static display. A prototype is currently under construction and is expected to fly late next year and certification and first customer deliveries are anticipated in 2017. Three aircraft will be used in the flight test program.

October 22, 2013 - 3:00pm

French engine manufacturer Snecma has been selected as the sole powerplant supplier for the new Dassault Falcon 5X, which was unveiled earlier this week here in Las Vegas. The new Silvercrest turbofan, rated at 11,450 pounds of thrust at takeoff and with a thrust-to-weight ratio of five, is expected to be certified in 2015. It will be the culmination of a 10-year effort, as Snecma began considering designing its first business jet engine in 2005.

October 22, 2013 - 6:15am
Big Ass Fans has found a niche in the aviation market, where its fans are used to circulate and cool air in hangars. Some of the models can be equipped with security cameras, fire-suppression equipment and LED lights. The company’s booth at the show is being cooled by an 18-foot ceiling fan.

The firm started in 1999 as the HVLS Fan Co., an acronym for high-volume low-speed fans. That name accurately described the design and efficiency of the company’s products, but after three years in business, according to the Lexington, Ky.-based manufacturer, “we finally had to bow to the sentiments of our customers and concede that we do, in fact, design and manufacture some Big Ass Fans.” Hence, the current brand name.

October 22, 2013 - 5:15am
Vector-Hawk has teamed with EcoServices to offer a version of the Pratt & Whitney-designed EcoPower Wash system for P&WC PT6 engines, shown here in the process of “cleansing” a PT6 on a Beechcraft King Air.

If you already fly or maintain some regional airliners and larger business jets, including the Bombardier CRJ200 and Global Express; Gulfstream IV and V/550; Dassault Falcon 2000EX and 7X; Embraer ERJ 145, 170 and 190; IAI Westwinds and Beechcraft King Air turboprops, you may already be familiar with an innovative, on-wing engine-cleansing system called EcoPower Wash.

October 22, 2013 - 4:00am
Shown in flight above Edwards AFB, with the test side visible, is Aerion’s phase-two test article mounted under a NASA F-15B.

Reno, Nev.-based Aerion is releasing results from recent flight tests of a natural laminar flow (NLF) wing test article this week here in Las Vegas, while the company continues to work to have its supersonic business jet enter service in 2020. The goal of these tests was to measure “real-world robustness” of supersonic NLF, which is a key technology for the Aerion SSBJ, in regards to surface quality and manufacturing tolerances.

October 22, 2013 - 3:00am

Rolls-Royce is preparing technologies for the next generation of business jet turbofans and the design engineers’ motto seems to be “smaller, faster, leaner.” Karsten Mühlenfeld, Rolls-Royce executive v-p of engineering and technology for civil small and medium engines, provided AIN with details on future designs that will feature swifter development cycles, near-perfect reliability and reduced acquisition costs.

October 20, 2013 - 1:30am
One of two turbine engine test cells at the Timken Aerospace plant in Mesa, Ariz., can test PT6A or T53 engines interchangeably. The vertical exhaust gas vents are used for the PT6A; the horizontal vent discharges exhaust from the T53 tailpipe.

Timken, known for manufacturing precision roller bearings for a variety of industries, is highlighting its wide range of aerospace products and services at the NBAA show (Booth No. 1327), in particular an expanded turbine engine maintenance, repair and overhaul (MRO) capability.

October 19, 2013 - 10:50am

A day after watching Pratt & Whitney’s PW1500G engines lifting Bombardier’s new CSeries airliner for its long-awaited first flight on September 16, Pratt & Whitney Canada president John Saabas told AIN that the new turbofan’s PurePower technology PW800 cousin will soon be delivering the same step change in operating efficiency and low noise to the business aviation sector.

 
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