22 mai 2020 | International, Sécurité

Coulson’s CU-47 is ready for the fire fight

Posted on May 22, 2020 by Howard Slutsken

Leveraging its experience with fixed-wing air tankers, Coulson Aviation has unveiled its latest aerial firefighting conversion, based on the Boeing CH-47D Chinook heavy-lift helicopter.

In early March, the first Coulson-Unical CU-47 was flown from the company's Port Alberni, B.C., base to the Aerial Firefighting North American 2020 conference in Sacramento, Calif.

Featuring a 3,000 gallon roll-on/roll-off internal tank and an advanced Garmin avionics suite, up to 12 CH-47Ds will be converted into next-generation heli-tankers, in a partnership with Unical Aviation that was

announced a year ago.

“Unical provides us with the aircraft and a vast supply of parts,” explained Britt Coulson, president and COO, in an interview with Skies.

“They bought the entire Canadian Forces CH-47 parts inventory and were the largest purchaser of CH-47Ds from the U.S. Army.”

The twin-rotor Chinook is well known for its speed, size and payload. While the helicopter is often deployed on fire attack missions carrying a water bucket as an external load, Coulson wanted to give the CU-47 more flexibility and capability.

The company's engineers had already developed a 4,000 gallon Retardant Aerial Delivery System RADS-XXL for its Lockheed C-130 Hercules tanker conversions, and that tank was shrunk to create a 3,000 gallon RADS-L for the CH-47D conversion.

“It's the same overall design as the C-130. It shares most of the same hydraulic components, the same doors and the same design of a roll-in, roll-out tank,” said Coulson.

Other CH-47 internal tank systems utilize the small hook well in the centre of the helicopter as the water and retardant delivery port, but according to Coulson, that has its limitations.

“The other tank designs are plagued with flow rate issues, which means they don't pack enough punch to really get through [forest] canopies or drop in heavy timber – the hook well opening just isn't big enough.

“The lower the flow rate you have out of your tank, the slower and lower you have to fly. The problem with a big helicopter like a Chinook is if you fly too slow and low, your downwash is going to negatively affect the ground fire conditions and your drop is going to be ineffective.”

To increase and optimize the flow rate for the RADS-L, the belly of the CH-47D was modified by cutting the helicopter's lower skin and adding structure below the floor to accommodate the tank installation and a pair of drop doors, controlled by the pilots through a state-of-the-art touchscreen controller.

From the same touch panel, the pilots also control the CU-47's newly-developed retractable snorkel system to refill the RADS-L tank from water sources close to a fire's location.

Installed internally, the snorkel head sits flush with the belly when retracted, so that with no additional external drag, the helicopter can maintain its fast 140-knot cruise speed.

In a hover, the snorkel takes just four seconds to deploy and six seconds to retract, and the pilots and flight engineer can monitor the system's operation via a high-definition belly-mounted camera feed, displayed on the touchscreen controller.

“The snorkel system has exceeded our expectations and we're filling the entire tank in under two minutes,” said Coulson.

With the advanced capabilities of the Garmin avionics, the relocation of the flight engineer's panel, and the new RADS-L tank, Coulson originally believed that the CU-47 could be crewed solely by two pilots, without a flight engineer. But recent operational experience led the company to rethink that strategy.

“We realized that with a helicopter of this size, going into some of the smaller dip sites, to have an additional set of eyes looking out the side or back is valuable to the pilots. So we've de-modified the helicopter and gone back to a full-time flight engineer to provide that increased safety and situational awareness.”

Like Coulson's C-130 conversions, the CU-47 can also be tasked with night-time firefighting missions, thanks to the Night Vision System (NVS)

certification of the helicopter's avionics suite.

Wearing NVS googles, the CU-47's crew work in tandem with a fire attack “Intel” helicopter's pilots. The Intel crew uses a thermal camera to evaluate the behaviour of a fire, and if a drop is required, they take a page from military ground-attack operations. Using a laser, the Intel crew designates the target for the tanker.

“With a geo-referenced lock, the Intel helicopter can orbit, and the laser beam will stay on the same spot. It illuminates an area on the ground about the size of a car,” said Coulson.

The first CU-47 will soon be joined by a second RADS-L equipped helicopter, two CU-47's with upgraded avionics that will fly “bucket” missions, and a fifth, tank-equipped CU-47 that will deploy as a spare.

“All of our FAA testing [on RADS-L] has finished, we're just waiting for the final Supplemental Type Certificate signature,” said Coulson. “We're doing some minor cleanup to the helicopter to make sure that it's ready to go fight fires this summer.”

Howard Slutsken's lifelong passion for aviation began when he was a kid, watching TCA Super Connies, Viscounts, and early jets at Montreal's Dorval Airport. He's a pilot who loves to fly gliders and pretty much anything else with wings. Howard is based in Vancouver, B.C.

https://www.skiesmag.com/features/coulsons-cu-47-fire-fight

Sur le même sujet

  • Duckworth: Army's New Helicopters Should Not Be Designed for Anyone Else

    26 février 2020 | International, Aérospatial

    Duckworth: Army's New Helicopters Should Not Be Designed for Anyone Else

    By Matthew Cox WEST PALM BEACH, Florida -- Sen. Tammy Duckworth, a former U.S. Army helicopter pilot, said recently that the Marine Corps, Navy and Air Force would have to wait their turn if they want their own version of the Army's futuristic helicopters being developed under the Future Vertical Lift (FVL) effort. The Illinois Democrat and member of the Senate Armed Services Committee recently attended a high-profile flight demonstration of Sikorsky-Boeing's new SB-1 Defiant helicopter that was designed with the goal of replacing the UH-60 Black Hawk. The Army awarded a team from Sikorsky, part of Lockheed Martin Corp., and Boeing Co. a 2014 contract to build Defiant as part of the Joint Multi Role Technology Demonstrator (JMRT-D) program. A Textron Inc.-Bell team also received a contract under the effort and built the V-280 Valor, a tiltrotor-design helicopter that completed its first test flight in December 2017. Both the Valor and the Defiant prototypes are promising designs, Army officials maintain, that are capable of flying at speeds of more than 200 knots and will result in a replacement for the venerable Black Hawk as the service's new Future Long Range Assault Aircraft (FLRAA). Duckworth, a former Army National Guard officer who lost both legs after enemy forces shot down the Black Hawk she was flying over Iraq in 2004, said she intends to keep the FVL program from morphing into an unwieldy, joint effort. That's a pitfall that has thrust many joint-service programs into program delays and cost-overruns because of overly broad requirements. "This is an Army aircraft; we need to keep an Army mission," Duckworth told reporters at the Feb. 20 flight demo. "If the other services want to fall in behind it and develop something afterward and tweak it for what they need, that is fine, but we cannot build a Frankenaircraft ... that's going to meet the Marines' needs and the Navy's need and the Air Force's needs. "We need to not let the requirements start to meander and creep around because otherwise we will never get to where we need to and get these things fielded as quickly as possible," she added. In the past, the Pentagon has often tried to develop multiple versions of a major combat system, such as the new F-35 Joint Strike Fighter, which has been designed to satisfy the requirements of the Navy, Marine Corps and Air Force. The acquisition program for the advanced, stealth fighter began in the mid-1990s and still suffers from testing setbacks that have delayed a full-rate production decision. That Army-Marine Corps Joint Light Tactical Vehicle (JLTV) program, however, is considered a successful acquisition effort that began in 2006 after Humvees in Iraq could not withstand the destruction force of enemy homemade bombs attacks. JLTV took almost a decade to become a reality but, in August 2015, Oshkosh Corp. was selected over Lockheed Martin Corp. and AM General LLC to build the vehicle for the Army and Marine Corps. Meanwhile, for the second year in a row, the Army has reduced the number of JLTVs it will buy in fiscal 2021 to free up money to fund future modernization. FVL is one of the Army's top modernization priorities under a new strategy the service launched in 2017, with the goal of replacing most of its major combat platforms beginning in 2028. Leaders stood up Army Future Command, an organization designed to help the service's acquisition and requirements machines work more closely together in an effort to streamline what has traditionally been a slow-moving process to develop and field combat system. So far, the strategy appears to be working, since the FLRAA and the Future Attack Reconnaissance Aircraft (FARA) efforts are ahead of schedule, Duckworth said. Army officials are scheduled to down-select to two vendors to build final prototypes of the FARA next month. The service is also scheduled to begin a competitive demonstration and risk reduction phase for FLRAA, which is expected to last until 2022, the year the service plans to down-select to one vendor to build the Black Hawk replacement. "This is rare for defense procurement to actually be ahead of timeline instead of pushing everything to the right," Duckworth said. "I am very pleased with how well the Army is handling this development." The senator stressed, however, that she intends to continue strict oversight of the FVL to ensure it doesn't result in a waste of taxpayer dollars. "We can't be spending upward of $60 million per airframe," Duckworth said. "If we do that, then we can't field the number of airframes that we need to be out there in the force." Army Secretary Ryan McCarthy, who also attended the flight demo, stressed that the service's leadership is committed to making necessary cuts to outdated programs to free up money for FVL and other modernization efforts. "We don't have a choice. We are running out of letters to upgrade the existing platforms -- they are 40-year-old systems; the technology will not endure," he said. -- Matthew Cox can be reached at matthew.cox@military.com. https://www.military.com/daily-news/2020/02/25/duckworth-armys-new-helicopters-should-not-be-designed-anyone-else.html

  • Italian Navy, telecom provider team up to deter attacks on undersea cables

    15 juillet 2022 | International, Naval, C4ISR

    Italian Navy, telecom provider team up to deter attacks on undersea cables

    An Italian Navy official also suggested cables themselves might act as sensors to help the service.

  • How the US Air Force is assembling its northernmost F-35 squadron amid a pandemic

    13 mai 2020 | International, Aérospatial

    How the US Air Force is assembling its northernmost F-35 squadron amid a pandemic

    By: Valerie Insinna WASHINGTON — The COVID-19 pandemic could make it more difficult for the U.S. Air Force's newest F-35 squadron to organize its personnel and jets on schedule. On April 21, the 356th Fighter Squadron at Eielson Air Force Base, Alaska, became the service's northernmost fighter squadron after receiving its first two F-35s. Pilots began flying those jets for training three days later, and another four F-35s on loan from Hill Air Force Base in Utah flew to Alaska on April 27. But a couple key challenges could hamper the assemblage of the new squadron, said Col. Benjamin Bishop, commander of the base's 354th Fighter Wing. “We're actually on timeline,” he told Defense News in an exclusive interview on April 28. “We have the pilots and maintainers already here to support operations throughout the summer. However, as you know, the Department of Defense has put a stop-movement order through [June 30], and that is something we're working through on a case-by-case basis.” Under the current order, pilots and maintainers who are moving through the training pipeline have been granted a blanket exception to transfer to Eielson. But more experienced pilots, maintainers and support personnel coming from an operational base like Hill Air Force Base will need to receive an exception. Getting additional F-35s to Eielson could also be an obstacle, as Lockheed Martin assesses whether it must slow down deliveries of the F-35 due to disruptions to its supply chain. In a statement to Defense News, Lockheed spokesman Brett Ashworth could not say whether the company was on track to deliver F-35s to Eielson on schedule. “Lockheed Martin continues to work with our suppliers daily to determine the impacts of COVID-19 on F-35 production,” he said. “We are analyzing impacts at this time and should have more detail in the coming weeks.” If the coronavirus pandemic delays the pace of F-35 deliveries to Eielson, the squadron will have to mitigate the shortfall in jets, Bishop said. “Currently, we're at a good pace on the road to readiness for our F-35 program here, and we'll continue to adapt and adjust to bring this mission capability to its full potential in the Indo-Pacific theater,” he noted. Despite COVID-19 and the potential logistical challenges involved in sending people and F-35s to Eielson, day-to-day training operations have continued as normal, said Col. James Christensen, 356th Fighter Squadron commander. Having six F-35s on base allows maintainers to use the jets for training while also maximizing flight hours for the eight pilots currently in the 356th. “We still do the mission the way we always have. We have the masks and the wipe procedures and social distancing,” Christensen said. “So [we're] being creative but still being able to get the mission done.” There are strategic benefits to being the U.S. Air Force's northernmost fighter squadron, starting with access. With support from an aerial refueling tanker, the F-35s at Eielson can reach and target any location in Europe or the Asia-Pacific, Bishop said. And even the harsh climate of Eielson has its perks. It's a short flight away from the Joint Pacific Alaska Range Complex, the Defense Department's largest instrumented training range, with 77,000 square miles of airspace, according to the 354th Fighter Wing. “The F-35 is going to be able to fly in that airspace, but they're not going to be alone,” Bishop said. F-35s training in that area will regularly be joined by F-22s based at Joint Base Elmendorf-Richardson in Anchorage, as well as the F-16s in Eielson's 18th Aggressor Squadron that simulate enemy combat jets. “You're going to see amazing fifth-generation tactics and integration tactics emerge,” he said. Russia is investing in its Arctic infrastructure, and the U.S. military must make its own improvements to how it operates from and trains in the region, said Gen. Terrence O'Shaughnessy, who leads U.S. Northern Command and the North American Aerospace Defense Command. “It's great to see some of the additional forces that are going in, whether it's the F-35s going to Eielson, whether it's the work of the Coast Guard to develop icebreakers,” he said during a May 4 event. “These are all relevant things for us to be able to operate in the Arctic. And that is absolutely, to me, key to our ability to defend ourselves.” As the 356th stands up and becomes combat-ready, it will participate in the next Red Flag-Alaska, a multinational air-to-air combat training exercise slated to be held this August. The squadron is also looking for opportunities to deploy around the Asia-Pacific so that pilots can acclimate themselves to the long geographical distances that characterize the region, Christensen said. “Everyone is excited just to have F-35s here because of the awesome training we can do, but we're also thinking about at some point we have to project this air power out into the Indo-Pacific theater as a combat force. And transitioning everyone, including the wing and including [Pacific Air Forces] — they all have to adjust the mission of Eielson,” he said. Unlike other fighter bases, which usually swap out existing aircraft of existing squadrons with new jets, the two F-35 squadrons coming to Eielson aren't replacing anything, and infrastructure needs to be built to accommodate the anticipated growth in both people and aircraft. When the first members of the 356th Fighter Squadron arrived on base in July 2019, Eielson was home to about 1,750 active-duty personnel, Bishop said. By December 2021, that number is expected to double, with the addition of about 1,500 airmen. In that time, 54 F-35s will be delivered to the base for a total of two squadrons — a notable increase from the 30 F-16s and KC-135s previously at Eielson. An estimated $500 million will be spent on military construction to support the buildup at Eielson, including new operations buildings, a simulator building, heated hangars and other maintenance facilities, and a new cafeteria. A total of 41 facilities will be either built or refurbished with that funding, with 29 of those projects finished and others still under construction to support a second F-35 squadron, Bishop said. And everything — from constructing new facilities to maintaining runways — is tougher in the subzero temperatures of the Arctic. “Early on in this job, I learned that there are two seasons in Alaska,” Bishop said. “There's winter and construction season, with the former a lot longer than the latter. From a beddown perspective, how you put your construction plan together, you have to maneuver around that season.” “In order to maintain efficiency of fighter operations up here, one of the things we did is we built walled weather shelters for our aircraft, so all of our aircraft are actually housed in weather shelters," he added. "That's not necessarily for the aircraft. That's more for the maintainers because having that insulated and heating facility, now you can do maintenance around the clock.” Corrected at 5/12/20 at 2:53 p.m. with the correct size of the JPARC, which was recently expanded to 77,000 square miles of airspace. https://www.defensenews.com/smr/frozen-pathways/2020/05/11/how-the-us-air-force-is-assembling-its-northernmost-f-35-squadron-amid-a-pandemic/

Toutes les nouvelles