30 octobre 2020 | International, Naval

Marine Hovercraft From Textron Flawed by Propeller Cracks

By

The U.S. Navy accepted delivery this year from Textron Inc. of the first two in a new generation of hovercraft for the Marines despite “extensive propeller blade cracking” that will require a redesign, according to service officials and documents.

The previously undisclosed problem was discovered during mid-2019 tests of the $5.7 billion program to build new air-cushion hovercraft to move Marines from ship to shore.

Even with the cracks unresolved, the Navy awarded Textron a $386 million contract for 15 more hovercraft that Congress had approved for fiscal years 2017-2020. But ordering those vessels was held up pending resolution of other technical problems, including issues with the main gearbox, drive-train integration and lubrication system, navigation electronics and bearings. The first two deliveries, in February and August, were each three years late.

Hovercraft “have always been important for supporting the Marine Corps' ability to land forces ashore, and in coming years they are to form part of the toolkit for implementing the Corps' new wartime island-hopping strategy for countering Chinese military forces in the Western Pacific,” Ronald O'Rourke, an analyst with the Congressional Research Service, said.

Taking delivery of the first two hovercraft allowed the Navy to begin initial operator training and “to move into the post-delivery test and trials period as we identify long-term” solutions for vessels in production, Navy spokeswoman Colleen O'Rourke said in an email. She described the flaws as “micro-cracks” in the composite structure of the blades that don't pose a safety hazard or “an immediate impediment” to operations.

“The program is the first major naval acquisition program in more than 15 years to be designed ‘in-house' by the Navy rather than by private industry,” according to a Navy fact sheet.

Reinforced Blades

O'Rourke said the Navy, Providence, Rhode Island-based Textron and subcontractor Dowty Propellers, a division of General Electric Co., conducted a study “to understand the underlying cause and mechanisms to improve propeller blade performance.” That led to a near-term plan to provide “reinforced blade sets that will deliver later this year” while production and post-delivery testing continue and “blade redesign efforts are underway,” she said.

She added that the eventual solution for the 73 hovercraft, known as Ship to Shore Connectors, “is not anticipated to result in any significant program cost increases.”

Scott Donnelly, Textron's chief executive officer, told analysts Thursday on an earnings call that the program is “steadily improving” and “we're starting to feel good about that.” He said the contractor has “started to get more craft deliveries, the production lines are starting to run better, we're starting to get supply parts coming in at the right time” so “that's a program that obviously is going to start to be a contributor to the profit in the rest of the businesses.”

Textron rose 6.6% to $34.21 at 10:24 a.m, the most since July 30, after third-quarter earnings per share from continuing operations beat the average analyst estimate.

Currently, 12 additional hovercraft are under construction in Slidell, Louisiana. The vessels will replace the aging Landing Craft Air Cushion vehicle that became operational in 1986.

The Ship-to-Shore Connector is a “franchise program” for Textron's Marine & Land Systems division, “which could more than double in revenue over the coming years as production accelerates,” Bloomberg Intelligence analyst Douglas Rothacker said in an email. Textron reports third-quarter earnings Thursday.

Procurement funding is projected to soar from $20 million the Navy requested for this fiscal year to almost $380 million by 2025, according to program documents.

The Navy's fiscal 2021 Selected Acquisition Report, obtained by Bloomberg News, said initial “Builders Trial” testing in mid-2019 uncovered “technical concerns with the propeller blades.” This resulted in a decision to divide the subsequent formal acceptance test into two events -- “unloaded” and “loaded,” which simulated carrying a 74-ton M1 tank.

“After the loaded builders test, craft inspection revealed extensive propeller blade cracking,” it said. “To avoid additional blade loss,” the first vessel's acceptance tests “were conducted unloaded.”

https://www.bloomberg.com/news/articles/2020-10-29/marines-combat-hovercraft-from-textron-have-cracked-propellers

Sur le même sujet

  • A consensus-driven joint concept for all-domain warfare will fall short

    23 septembre 2020 | International, Aérospatial, Naval, Terrestre, C4ISR, Sécurité, Autre défense

    A consensus-driven joint concept for all-domain warfare will fall short

    Mark Gunzinger Vice Chairman of the Joint Chiefs of Staff Gen. John Hyten recently announced a new U.S. Department of Defense joint war-fighting concept will summarize capabilities needed for future all-domain operations and eliminate artificial lines on the battlefield used to deconflict U.S. operations in the past. Hyten also noted the concept will seamlessly integrate “fires from all domains, including space and cyber,” to overwhelm an enemy. While these aspirations are laudable, there are indications the concept could fall short of what is needed to inform cross-service trade-offs that must be made in an era of flat or declining defense budgets. The DoD creates operating concepts to define preferred approaches to perform specific missions or execute a campaign to defeat an enemy. They also provide a foundation for the services to assess new technologies, force alternatives and resource priorities. Said another way, they are the tissue that connects top-level National Defense Strategy guidance to actual plans and programs. While a joint all-domain war-fighting concept is urgently needed, Hyten has not made it clear the one in development will lead to trade-offs that maximize the DoD's war-fighting potential. For instance, Hyten has said it will call for every service to conduct long-range strikes: “A naval force can defend itself or strike deep. An air force can defend itself or strike deep. The Marines can defend itself or strike deep. ... Everybody.” This could mean the concept will support a degree of redundancy across the services that has never existed. Setting aside tough trade-offs that eliminate excessively redundant programs will waste defense dollars and reduce capabilities available to U.S. commanders. More specifically, the concept might endorse the Army's plan to buy 1,000-mile-plus, surface-to-surface missiles that cost millions of dollars each. Doing so would ignore analyses that have determined using large numbers of these weapons would be far more expensive than employing bombers that can strike any target on the planet for a fraction of the cost, then regenerate and fly more sorties. Furthermore, the Army's long-range missile investments could be at the expense of its ability to defend U.S. theater air bases against missile attacks. Not only has air base missile defense long been an Army mission — it has long neglected and underfunded the mission. Chinese or Russian strikes against under-defended air bases could cripple the United States' primary combat sortie-generation operations. If the concept does not consider these kinds of trade-offs, it could be due to the approach used to create it. The Joint Staff's doctrine development process is notorious for seeking consensus instead of making cross-service trade-offs necessary to maximize the DoD's war-fighting potential. Assuring bureaucratic service equities versus optimizing combat lethality can lead to operating concepts that fail to create clear priorities or — worse yet — declare everything a priority. If everything is a priority, then nothing is a priority. Moreover, each service was asked to develop a subordinate concept that will be integrated into the whole. This piece-part approach could result in the services ladening their subordinate concepts with their own equities instead of working together to develop the most effective, decisive options. In short, a bottom-up, consensus-driven concept for all-domain warfare would not be an effective baseline to compare the DoD's force structure and capability alternatives. Three things could help to avoid this mistake. First, the secretary of defense should approve a new all-domain war-fighting concept, and the secretary's staff should be deeply involved in its development. Some say the latter is inappropriate, believing the military, not DoD civilians, should create war-fighting concepts. However, it is entirely appropriate for the secretary's staff to be part of the concept's creation if its purpose is to shape the DoD's plans and programs. Second, DoD leaders should rigorously examine the services' existing roles and missions during the concept's development, and make changes to reduce excessively redundant responsibilities, forces and capabilities. This may need to be driven by congressional language. Finally, the DoD should jettison the word “joint” as part of the concept's title. This would stress the concept is focused on integrating operations across all domains, not on the services that provide forces to combatant commanders. The point is not for all to participate, but instead for all options to be considered, and those that provide best combat value be prioritized. Otherwise, it becomes a case analogous to all the kids chasing a soccer ball. The 2018 National Defense Strategy was the beginning of the effort to shift the DoD toward preparing for peer conflict. Given that dollars and time are short, the DoD must now get a concept for all-domain warfare right. Like the National Defense Strategy, the concept must be top-down driven, not a bottom-up, consensus-driven product that fails to make trade-offs across the services and provides a rationale that supports what each service desires to buy. Rather, its ultimate objective should be to seek best-value capabilities and expand theater commander options to defeat peer adversaries. https://www.defensenews.com/opinion/commentary/2020/09/22/a-consensus-driven-joint-concept-for-all-domain-warfare-will-fall-short/

  • Thales closes acquisition of important cybersecurity players Excellium and S21sec

    12 octobre 2022 | International, C4ISR

    Thales closes acquisition of important cybersecurity players Excellium and S21sec

    With the acquisition of Excellium and S21Sec, Thales will accelerate its cybersecurity development roadmap and expands its footprint in Luxembourg, Belgium, Spain and Portugal

  • Air Force fires ops group commander after scathing B-1 crash report

    5 août 2024 | International, Aérospatial

    Air Force fires ops group commander after scathing B-1 crash report

    The Air Force's report blasted poor airmanship and a "culture of complacency" that investigators said led to the B-1's January crash.

Toutes les nouvelles