September 22, 2024 | International, Aerospace
Boeing ousts defense chief Ted Colbert as firm seeks to right itself
Colbert's removal from Boeing Defense marks CEO Kelly Ortberg's first major management change since taking the helm last month.
October 11, 2019 | International, Aerospace
NFAC Tests Next-Generation Military Helicopter
Wind Tunnel Test Designed To Validate The Aerodynamic Performance And Flight Mechanics Of Sikorsky's X2 Technology Aircraft
The U.S. Army is looking to improve its aviation technology and recently called upon the AEDC National Full-Scale Aerodynamics Complex at Moffett Field in Mountain View, CA, to advance this effort.
Engineers from Sikorsky Aircraft Corporation and The Boeing Company, in partnership with the U.S. Army Combat Capabilities Development Command Aviation & Missile Center Army Aviation Development Directorate, recently conducted a series of tests at NFAC to support the development of the SB>1 DEFIANT, a military helicopter being developed for the Army's Joint Multi-Role Technology Demonstrator (JMR TD) program.
The goal of this wind tunnel test was to validate the aerodynamic performance and flight mechanics of Sikorsky's X2 Technology aircraft. These configurations, which are being utilized on the SB>1 DEFIANT, include a lift-offset coaxial rotor system, composite fuselage and rear-mounted pusher propulsor that provides increased speed.
The SB>1 DEFIANT, which made its first flight in March, is a technology demonstrator for a medium-lift utility helicopter. Future uses of this type of air vehicle could include attack and assault, troop transport or MEDEVAC.
The testing was conducted throughout the first half of 2019 and concluded in mid-June. To accomplish the tests, a 1/5 scale model of the SB>1 DEFIANT airframe with powered coaxial main rotors was placed in the NFAC 40- by 80-foot wind tunnel. Measurements included forces and moments on the various components, as well as fuselage, empennage and blade surface pressures.
David Wang, NFAC test engineer, said the recent tests expanded on data collected from a JMR wind tunnel entry conducted at NFAC in 2016 by gathering data at faster speed ranges. “From the NFAC perspective, the wind tunnel test was successful,” Wang said. “The test customer was able to collect performance and handling qualities data for their subscale model up to their maximum design flight speed.”
Data collected during the recent tests is undergoing review and analysis. It is unknown at this time if there will be future testing of the SB>1 DEFIANT model at NFAC.
The full-scale SB>1 DEFIANT flight demonstrator is currently undergoing ground and flight tests at Sikorsky's flight test facility. According to the Sikorsky-Boeing JMR Team, data from SB>1 DEFIANT will help the Army develop requirements for new utility helicopters expected to enter service in the early 2030s.
A previous DOD study concluded that upgrades to the aging DOD rotary wing aviation fleet would not provide the capabilities required for future operations. Significant improvement in several attributes of fleet aircraft, such as speed, payload, range, survivability and vertical lift are required to meet future needs. It was determined this improvement could be achieved through application of new technologies and designs.
To accomplish its goal, the Army has been executing a science & technology (S&T) effort to mitigate risk associated with maturity of critical technologies, feasibility of desired capabilities and cost of a technical solution. An aspect of this effort is the air vehicle development associated with the JMR TD program.
JMR TD is the alignment of Army Aviation's S&T with the Future Vertical Lift initiative, which seeks to develop a new family of system to modernize and replace the government's current fleet of rotorcraft. According to the Army, the intent of the JMR TD is to mitigate risk for the Future Vertical Lift program through means that include the testing of advanced technologies and efficient vehicle configurations.
NFAC, managed and operated by Arnold Engineering Development Complex (AEDC), is the largest wind tunnel complex in the world. It consists of both the 40- by 80-foot and 80- by 120- foot wind tunnels. These tunnels, which share a common drive system, are primarily used for aerodynamic and acoustic tests of rotorcraft and fixed wing, powered-lift V/STOL aircraft and developing advanced technologies for these vehicles.
Both subscale and full-scale models are tested at NFAC. The speed range of the 40- by 80-foot wind tunnel test section is continuously variable from 0 to 300 knots, while the speed range in the 80- by 120-foot wind tunnel section is continuously variable from 0 to 100 knots.
http://www.aero-news.net/index.cfm?do=main.textpost&id=021bcb83-4df9-4253-b7a3-ff3805b7b16a
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June 16, 2020 | International, Aerospace, Naval, Land, C4ISR, Security
Will US foreign military sales catch the coronavirus?
By: Joe Gould WASHINGTON ― Economic shock waves from the coronavirus pandemic are threatening U.S. arms sales to its allies and partners, who may suddenly have less to spend. U.S. defense exports, through either the Foreign Military Sales process (which is government-facilitated) or the Direct Commercial Sales process (from a firm to a nation), are a means for the U.S. to strengthen ties with friendly countries and, as President Donald Trump likes to make explicit, pump revenue into the U.S. economy. Though the U.S. made $55 billion in foreign military sales in fiscal 2019, observers see headwinds in declining oil prices and the potential for allies to prioritize their domestic response to COVID-19 over defense spending. The Middle East is a leading market, and Saudi Arabia the world's leading purchaser. But the falling price of crude oil has fueled projections that Gulf Cooperation Council budgets will shrink, and with them demand for U.S. weapons. To boot, a Saudi-initiated oil price war has only added to Capitol Hill's ire toward the kingdom. Arms sales to Saudi Arabia reentered Congress' crosshairs as lawmakers probed Secretary of State Mike Pompeo for firing of a State Department inspector general who'd been investigating Pompeo for bypassing a congressional freeze on arms sales to the kingdom. Previous objections to the sale centered around Riyadh's role in Yemen's civil war and — U.S. intelligence agencies believe ― the death of columnist Jamal Khashoggi. “I think the trends are a bit worrisome,” Roman Schweizer, the managing editor of Cowen Washington Research Group, said during a Defense One event. “The Saudis have been in the penalty box with the U.S. Congress since the Khashoggi killing, and most recently with the overproduction of crude oil. ... So getting a deal though the U.S. Senate for the Saudis are probably a bridge too far.” Within NATO and the European Union, allied purchases of U.S. equipment have been lagging, as Trump has jousted with leaders in Western Europe, Schweitzer said. At the same time, allies nearer to the border with Russia have been buying U.S. arms more heavily. In the long term, tensions with Russia and China are still likely to drive demand, observers say. China ― the Pentagon's pacing threat ― is raising defense spending by 6.6 percent in 2021 even as it cuts education and public services. “The growth rate may have slowed, but the fact the budget increased is still a significant indication of the focus and prioritization that the [Chinese Communist] Party puts on modernization plans and national security interests,” Meia Nouwens, an expert on Chinese military affairs with the International Institute for Strategic Studies, said at the same event. For now, it's unclear whether COVID-19 will turn Europe's focus away from burden-sharing, said Edward Ferguson, a former British ambassador now serving as minister counselor for defense at the U.K. embassy. What is clear: European governments will have to have difficult conversations. “Right now within NATO, what we see are allies proliferating rather than reducing,” Ferguson said at the event. “Notwithstanding the additional demands on treasuries and exchequers is the fundamental shifts in technologies we're seeing and [the] need to invest in that, and the increasingly complex strategic environment, whether it's Russia or China. " Along similar lines, the industry itself has been largely optimistic about the prospects of overseas sales. On recent investor calls, Lockheed Martin executives said there's been no reduction in demand from the Middle East. They touted F-16 fighter jet deals with Bahrain, Bulgaria, Slovakia and ― pending government approval ― Taiwan, as well as demand for Hellfire missiles and the Guided Multiple Launch Rocket System, the Joint Air-to-Surface Standoff Missile and the Patriot Advanced Capability-3 missile. Lockheed Chief Financial Officer Kenneth Possenriede, on an investor call earlier this month, pointed to demand for the F-35 jet from Poland, Belgium and Japan, and Lockheed's plans to participate in aircraft competitions in Switzerland, Spain and Finland. “We're in the final stages of the Canada competition, which we feel pretty good about,” he said. In Raytheon's May 7 earnings call, CEO Greg Hayes acknowledged Saudi Arabia is challenged by the lower oil prices, but added: “I don't think peace is breaking out anytime soon in the Middle East.” The company anticipated Riyadh will buy its AN/TPY-2 Surveillance Transportable Radar, which is linked to the Terminal High Altitude Area Defense missile defense system. “So far, we have continued to see good cash come in from the Middle Eastern customers during the first quarter, surprisingly even with oil out there,” Hayes said. “They need the equipment, they want the equipment and we need to help them defend themselves.” https://www.defensenews.com/congress/2020/06/15/will-us-foreign-military-sales-catch-the-coronavirus
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October 22, 2024 | International, Naval
HMCS Montréal Returns from Operation HORIZON
Today, His Majesty’s Canadian Ship (HMCS) Montréal returned to its home port of Halifax, Nova Scotia, having completed its six-month deployment to the Indo-Pacific region under Operation HORIZON.