Register Free

Announcement

Collapse
No announcement yet.

USAF not F-35 thread

Collapse
X
Collapse
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
  • Filter
  • Time
  • Show
Clear All
new posts
  • FBW
    FBW
    Rank 5 Registered User

    Originally posted by haavarla View Post
    FBW@
    Is there a link to the original source of that?
    Here:
    https://www.flightglobal.com/news/ar...-trove-444636/

    Longer article via Newsweek: www.newsweek.com/russian-military-used-syria-war-train-forces-and-learn-us-combat-moves-says-772027%3famp=1
    Last edited by FBW; 8th January 2018, 19:26.

    Comment

    • bring_it_on
      2005-year of the RAPTOR!!

      GAO dismisses Raytheon's attempt to stay in JSTARS radar competition


      The Government Accountability Office recently dismissed Raytheon's formal protest that the Air Force unfairly excluded the company's "Archimedes" wide-area surveillance radar from the E-8C Joint Surveillance Target Attack Radar System recapitalization competition.

      GAO closed the protest Dec. 28, about a month after it was filed Nov. 20 and two months before a ruling was due, according to the protest docket. The Air Force had 30 days to respond. Two supplemental protests Raytheon filed Dec. 11 and 18 were also dismissed Dec. 28.

      A GAO official told Inside Defense Monday it did not resolve whether Raytheon was right, but said the Air Force was not so deeply involved in radar selection that it counted as taking over for the prime contractor, as Raytheon had argued. The Air Force contended -- and GAO agreed -- the federal watchdog doesn't normally have jurisdiction to intervene in subcontract selection.

      "Raytheon is a subcontractor to the prime contractors who submitted offers, and they alleged that because the government made a selection on the type of radar that should be used by the government, that the agency in effect was conducting a procurement at the subcontract level," the GAO official said.

      B.J. Boling, a Raytheon spokesman, would not comment on the decision but told Inside Defense Monday the company is deciding whether to contest the dismissal. In November, Raytheon said the Air Force's process of deciding which radar designs would be considered to fly on one of three replacement aircraft was flawed.

      The Air Force did not immediately respond to a request for comment.
      Old radar types never die; they just phased array

      Comment

      • bring_it_on
        2005-year of the RAPTOR!!

        Secretive new Kratos UAS enters production


        A new jet-powered unmanned air system developed by Kratos Unmanned Systems Division (USD) will enter production under a $23 million contract awarded by an unidentified customer, the California-based company announced on 8 January.

        Most of the work under the contract will be completed within a year, but Kratos expects “multiple years of additional production” of the new UAS, the company says.

        Kratos confirmed the existence of a high-performance, jet-powered UAS development programme last year, but continued in the new announcement to offer few details, including the identity of the customer.“Due to customer-related, competitive and other considerations, no additional information will be provided related to this programme or contract award,” Kratos says.

        In previous statements about the project, Kratos chief executive Eric DeMarco has described the new UAV as capable of high-subsonic speeds and high-g manoeuvres.

        The project comes after Kratos has fielded a series of jet-powered projects, including the UTAP-22 loyal wingman and the low-cost XQ-222.

        Kratos entered the UAS market six years ago by acquiring Composite Engineering Inc, maker of the BQM-167 and BQM-177 series of high-speed target drones.

        “We are now completing investments on a number of these new UAS platforms and entering production, which we expect will be key contributors to future increases in revenue, profit, cash flow and overall Kratos shareholder value,” DeMarco says. “We are confident that Kratos' ability to rapidly develop, demonstrate and field technology rich, affordable systems is a demonstrated key differentiator for our Company.”
        Old radar types never die; they just phased array

        Comment

        • FBW
          FBW
          Rank 5 Registered User

          New ISR "Flightplan"- interesting read:
          https://breakingdefense.com/2018/01/...pace-cyber-ai/

          Comment

          • bring_it_on
            2005-year of the RAPTOR!!

            The ISR plan an the USAF Electronic Warfare ECCT RFI are two good recent reads that will likely inform the next few budgets significantly.
            Old radar types never die; they just phased array

            Comment

            • mrmalaya
              Generation 4.75+++

              So with Boeing revealing it has a "Son of Blackbird" up it's hypersonic sleeve, LM telling us that the SR-72 demonstrator is built - does anyone else find this all a bit odd?

              It's a bit like Airbus saying they are building a 100 seat Mach 2 SST!

              Perhaps when I am retired, we will be hearing about LMNG planning production of a flying tic-tac demonstrator.

              Comment

              • bring_it_on
                2005-year of the RAPTOR!!

                If the USAF has indicated that such an aircraft may find its way into its UAS roadmap circa 2030, then it is reasonable for quite a few OEMs to be investing IR&D into it right about now, aided by official contracts to mature the technology to enable this as an option. In that context, I think it has been covered by a number of publications both on the propulsion side and on what the major integrators are doing. Both DARPA and AFRL are working on this problem and it isn't unreasonable to expect some prototyping having already happened in support of those efforts.

                However, Weiss hints that work on a combined cycle propulsion system and other key advances needed for a viable hypersonic vehicle are reaching readiness levels sufficient for incorporation into some form of demonstrator. Following critical ground demonstrator tests from 2013 through 2017, Lockheed Martin is believed to be on track to begin development of an optionally piloted flight research vehicle (FRV) starting as early as next year. The FRV is expected to be around the same size as an F-22 and powered by a full-scale, combined cycle engine.

                While no specific details have been revealed, it is known that Lockheed Martin and Aerojet Rocketdyne have been teamed since 2006 on work to integrate an off-the-shelf turbine with a scramjet to power an aircraft with a combined cycle propulsion system from standstill to Mach 6 plus. The development built on work begun earlier under the Air Force/Darpa HTV-3X reusable hypersonic demonstrator, which was cancelled in 2008 but went a step further to integrate a high-speed turbine engine. The HTV-3X concept was an outgrowth of Darpa’s Falcon program, which included development of small launch vehicles, common aero vehicles and a hypersonic cruise vehicle.

                http://aviationweek.com/defense/skun...rator-progress
                Last edited by bring_it_on; 12th January 2018, 12:02.
                Old radar types never die; they just phased array

                Comment

                • mrmalaya
                  Generation 4.75+++

                  I think the point I was making (perhaps badly) is that both companies have hypersonic lineage dating back multiple decades and the cynic in me has trouble believing this is their first bite of the cherry- regardless of what White World requirement there now is.

                  This programme answers a lot of questions for me:

                  GIUK Gap Interceptor:

                  https://www.secretprojects.co.uk/for...p?topic=6422.0

                  Comment

                  • bring_it_on
                    2005-year of the RAPTOR!!

                    This is a "bite at the cherry" towards a identified goal of fielding a Mach 5-6 capable UCAS as indicated by one of the services. Hypersonic research in virtually all spheres at an open ended S&T level has been going on for decades but specificly as it applies to what Lockheed shared at AIAA last year, and what Boeing has done this year is more of an effort to market themselves specificly for DARPAs and AFRLs identified interests and programs. Lockheed, if some reports are to be believed, may well have even fabricated and performed some testing on its demonstrator.
                    Old radar types never die; they just phased array

                    Comment

                    • bring_it_on
                      2005-year of the RAPTOR!!

                      ...
                      Attached Files
                      Old radar types never die; they just phased array

                      Comment

                      • TomcatViP
                        Rank 5 Registered User

                        Probably that Boeing and LM were teaming at the time for the demonstrator. Both design might originate from the same co-dev'd concept.
                        Last edited by TomcatViP; 12th January 2018, 20:16.

                        Comment

                        • bring_it_on
                          2005-year of the RAPTOR!!

                          From what I have heard and read based on publicly known statements made at AIAA last year there was no teaming b/w Boeing and Lockheed. Skunk Works has always worked on the piece themselves as a major prime along with Aerojet Rocketdyne.


                          http://aviationweek.com/defense/skun...rator-progress
                          Last edited by bring_it_on; 12th January 2018, 20:19.
                          Old radar types never die; they just phased array

                          Comment

                          • mrmalaya
                            Generation 4.75+++

                            It also reads as if the propulsion/aerodynamics may be different in the two approaches.

                            Comment

                            • bring_it_on
                              2005-year of the RAPTOR!!

                              P&Ws James Kenyon shared the latest update on the AETD and AETP efforts for the company in an Aviation Week Podcast. Also included was an update on the F-135 enhancements and where things stand (4-6% fuel burn reduction and 7-10% thrust increase demonstrated).

                              http://aviationweek.com/future-aeros...ving-and-r2-d2
                              Old radar types never die; they just phased array

                              Comment

                              • bring_it_on
                                2005-year of the RAPTOR!!

                                The FY17 DOT&E report seems to have confirmed and shed further light on the USAF/USN efforts to develop and field a 5th generation aerial target drone to complement the QF-16. These aircraft could begin flight testing in the next 12 months or so.

                                DOT&E reveals progress on 5GAT aerial target



                                The Pentagon’s Director of Operational Test and Evaluation (DOT&E) has revealed that the US Department of Defense (DoD) is advancing development and testing of a Fifth-Generation Aerial Target (5GAT) to replicate the stealth and performance characteristics of the latest Russian and Chinese tactical fighters


                                Two 5GAT prototypes have been funded, with flight testing planned to start in fiscal year (FY) 2019. Both the Unmanned Systems Division of Kratos Defense and Security Solutions and 5-D Systems have confirmed to Jane’s that they are under contract on the programme.

                                With the QF-4 target drone retired from use in 2016, the US Air Force is now using QF-16 full-scale aerial targets to emulate fourth generation air threats. However, the QF-16 – an unmanned remote-controlled conversion of the F-16 fighter – is unable to replicate the low observability characteristics of fifth-generation threat aircraft such as Russia’s PAK-FA and China’s J-20.

                                As a complement to the QF-16, the 5GAT will be a reduced signature platform, with internal carriage for advanced augmentation devices, to meet a requirement to represent fifth-generation threats.


                                Work on the 5GAT study effort began in 2006, with the programme examining the design and fabrication of a dedicated 5GAT that would be used in the evaluation of US weapon systems’ effectiveness. 5GAT will also be used to assist with future weapon system design/development, planning and investment, and future analysis of alternative activities.

                                DOT&E said that a 5GAT team, “comprised of air force and navy experts, retired [Lockheed Martin] Skunk Works engineers, and industry experts”, completed the preliminary design of the target vehicle in 2016. The fully-owned government design includes the aircraft outer mould line, internal structures, loads analysis, propulsion, and subsystems.

                                According to DOT&E’s 2017 annual report, the 5GAT effort “is currently building the first of two demonstration prototypes, including flight propulsion, system integration, and flight simulation/verification activities”.

                                It said, “The team built one full-scale, flight-representative wing that will be used for structural load tests and a system integration laboratory, as well as a full-scale test article for radar cross-section testing. The DoD provided additional funding in FY 2018–19 to complete the final design, tooling, fabrication, and flight tests (FY 2019) and to build a second prototype.”

                                The prototype systems will be used to demonstrate reduced signature, basic aerodynamic performance, alternative cost models for aircraft development, and provision for special mission systems.

                                Kratos is already well-known for its line of all-composite sub-scale aerial targets, and is also working on a number of tactical unmanned combat air vehicle projects. While the company had previously acknowledged classified contracts for a new high performance, jet-powered unmanned aerial drone system, it had not previously disclosed its participation in 5GAT.

                                5-D Systems is a software and systems group with a long pedigree in target systems. The company had previously worked with CEi – acquired by Kratos in 2012 and now subsumed into its Unmanned Systems Division – on 5GAT concept studies.

                                As well as providing a test asset for 5GAT performance evaluation, the prototyping effort is additionally promoting alternative design and manufacturing approaches for future air vehicle acquisition programmes, and providing verified cost data for all-composite aircraft design/development, alternative tooling approaches, and innovative management applications.
                                I may have posted this earlier on this forum but HERE are links to earlier work to this end funded by AFRL.

                                Kratos is doing quite well for itself and seems to be carving out a niche when it comes to small to medium sized target and low cost UAS across the performance spectrum. How long before they are acquired by a major prime?
                                Last edited by bring_it_on; 26th January 2018, 12:32.
                                Old radar types never die; they just phased array

                                Comment

                                • mrmalaya
                                  Generation 4.75+++

                                  I find this very amusing. Most of the forum is taken up with one country or the other attempting to develop their fighters beyond the 4th generation, and the US is working designing exciting looking aircraft to shoot down!

                                  Comment

                                  • bring_it_on
                                    2005-year of the RAPTOR!!

                                    There is a need for this at many levels both testing and training. The USAF/USN/USMC are together adding multiple squadrons of stealth aircraft a year, and there are multiple major sensor programs underway that have specific requirements of better Reduced RCS detection/performance built in. Short of using operational aircraft which will get quite expensive, Low Observable target drones that can rapidly integrate new payloads can help them quite a bit at a reasonable cost. The USAF, USMC/USN and even the US Army are recapitalizing a large portion of their surveillance and Fire Control radar inventory so there is a lot of developmental and operational test requirements over the next decade or so that could use a more affordable LO-VLO target system. Same for the tactical missile fleet..The AMRAAM is going to be undergoing SIP 2-4 over the next decade and the SACM and other A2A Missiles will also be in some phase of development over the next decade..these two can use a more advanced target system. The QF-16 is great as it is 9G capable, supersonic and can carry substantial payload but there is a huge gap between its performance and that of much smaller subsonic drones that may have significantly lower RCSs. A higher performance LO to VLO (depending upon the trade space for RCS/performance and cost) system can be quite useful.
                                    Last edited by bring_it_on; 26th January 2018, 13:09.
                                    Old radar types never die; they just phased array

                                    Comment

                                    • mrmalaya
                                      Generation 4.75+++

                                      Oh I don't doubt the need for one minute!

                                      In the context of this forum, it just seems ironic. This drone could end up being "sexier" than some of the much vaunted fighters that are bandied around on various threads.

                                      I wonder if other airforces will follow suit? Surely the Russians and Chinese should have been the first to build something like this?!

                                      Comment

                                      • bring_it_on
                                        2005-year of the RAPTOR!!

                                        Some additional data on the 2 designs AFRL shortlisted during its Phase III effort...Both were 3+ ton (empty weight) designs with a gross takeoff weight approaching 6 tons.


                                        A. 5th Gen Target Study Phases
                                        While not originally envisioned as a multi-step study, the 5th Generation Target Study was ultimately completed over three distinct phases:

                                        The initial study (later dubbed Phase I) was intended to collect the test requirements and estimate
                                        procurement costs for an aircraft that could better represent emerging, 5th Generation threat fighter aircraft
                                        in an end-to-end weapon system test than could the current QF-4 aerial target, existing sub-scale4 aerial
                                        targets, or the planned QF-16 aerial target.
                                        The study team rapidly concluded that engine performance was
                                        the key factor influencing overall target cost. Increasing performance rapidly escalated engine cost as well
                                        as the aircraft’s size which, in itself, also escalated vehicle cost. Consequently, two classes of conceptual
                                        designs were developed: a high performance, “replacement” design that could be used in lieu of either
                                        QF-4’s or QF-16s, and a reduced performance, “complementary” design that focused solely on the key 5th
                                        Generation characteristics of low observable signature, advanced sensors, and electronic attack devices and
                                        would be employed in combination with the QF-4/QF-16. Phase I ultimately concluded that a replacement
                                        design was unaffordable, and recommended further pursuit of a complementary design.

                                        • Upon completion of the initial study, DOT&E directed the study team to conduct a second study (Phase 2)
                                        to further examine the potential capabilities of a complementary target concept. This effort extended
                                        beyond conventional conceptual design, but fell short of a complete preliminary design. Numerous
                                        configurations were considered and discarded as the design process evolved. By the end of Phase 2, two
                                        configurations, depicted in Figure 1, had emerged as the most promising concepts. These included the
                                        TRAP106, a conventional fighter aircraft design resembling a reduced scale F-22, and the D117, a stealthy
                                        delta wing design whose heritage harkens back to the days of the F-102 and F-106 aircraft that were
                                        designed when exceptionally high thrust to weight ratio engines were not available and minimization of
                                        profile drag was critical. Both aircraft were designed around a pair of Williams FJ44-4 turbofan engines
                                        and exhibited similar performance capabilities.
                                        Unit production cost was still a concern, however, and a
                                        late decision was made to switch to J85 turbojet engines that were nearing the end of their service life with
                                        the military and would soon be retired. While the J85 is similar in weight to the FJ44-4, it was recognized
                                        that replacing a turbofan with an afterburning turbojet would result in numerous design changes that could
                                        not be completed under the current task statement. A third and final phase was then commissioned to
                                        integrate the new engines and resolve any outstanding issues that remained.

                                        Phase 3 was largely an engine integration task combined with clean-up of some remaining aerodynamic issues. Specific tasking included:

                                        •Redesigning the engine inlets for the J85
                                        •Moving the engine from the middle of the aircraft to the aft end due to the presence of the hot afterburner section and updating the weight and balance and stability derivative estimates
                                        •Shifting the wing and inlet leading edges aft (thereby shifting the center of pressure) to compensate for the large expected change in aircraft center of gravity location
                                        •Investigate the impact of increased fuel consumption on mission endurance
                                        •Validate the changes to the aircraft’s outer mould line (OML) via wind tunnel testing at the U.S. Air Force Academy (USAFA) and the University of Washington Aeronautics Laboratory (UWAL)
                                        •Update mission performance estimates based on the changes listed above and prepare a final report for the sponsor

                                        Attached Files
                                        Last edited by bring_it_on; 26th January 2018, 14:56.
                                        Old radar types never die; they just phased array

                                        Comment

                                        • Levsha
                                          Rank 5 Registered User

                                          In the context of this forum, it just seems ironic. This drone could end up being "sexier" than some of the much vaunted fighters that are bandied around on various threads.
                                          A drone sexier than a JF-17 or Tejas - naahh...

                                          Comment

                                          Unconfigured Ad Widget

                                          Collapse

                                           

                                          Working...
                                          X