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TomcatViP

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  • in reply to: Military Aviation News #2179513
    TomcatViP
    Participant

    A disappointment to you but it saves lifes. There are reports of French special forces being impaired by the limited time on station due to the lack of refueling caps. I have even in mind an hostage liberation turning badly because of that.
    Time has been given to Airbus to sort the situation, extended and even complaisantly rescheduled.

    …Diabolicum est, has they use to say.

    B/w a longer hose only aggravates the problem (same for a longer boom – see kc46 problem today). The attenuation in amplitude you’d get will only met very specific conditions.

    in reply to: A question for an aeronautical engineer #2179562
    TomcatViP
    Participant

    Reminds me of one of my favorite old aeronautical programs from NASA – the MAW (Mission Adaptive Wing).

    https://www.youtube.com/watch?v=Tm2YdbbLhYY

    This concept is pretty much alive, albeit on a slightly different form. Instead of a full span profile morphing, local adapted distribution is achieved via a flexible skin. See the the Nasa Gulfstream and other wind tunnel test experiments. We are probably witnessing the last generation of airliners with conventional governs.

    in reply to: The 'JUST A NICE PIC…' thread #2179844
    TomcatViP
    Participant

    Gorgeous!
    Thx for sharing.

    in reply to: F-35 News and discussion (2016) take III #2179944
    TomcatViP
    Participant

    Not enough, it seems, but whatever. That’s not the right place, and even if it was I’m not interested in arguing with you.

    To answer Loke question while still trying to not reply to you 😀 , not that I have as much arrested idea as you seem, but it is not in my intention to bother anyone…

    What we know
    – FLIR: removed from most of the late aircraft. Replaced by a decoy or, some says, an aerodynamic shape.
    – TV sensor still in place
    – Radar upgraded with a GaN AESA with same interface
    – IR search and track is now the apanage of the Mica’s sensor
    – Spectra unchanged and/or coherent upgrade

    What we may conclude:
    – RADAR sensitivity is increased (GaN) but interface is the same. Shared Signal for the fusion has hence the lower grade as standard (just like an 8 bits circuit inside a 64 bits computer). What it means, is that the increased radar capacity is not used for the FUSION (you can’t discretize in a realtime a signal at a higher quality that you share it – it’s a loss of computing time and power). Most probably, given the Spectra high sensitivity antennae, it was never meant to be.
    – idem for the IR signal. A wing mounted missile can’t have the same sensor sensitivity than a dedicated unit dimensioned for the airframe (function of power/voltage and cooling capacity)
    – SPECTRA is unchanged and keep being linked with the TV sensors. This info makes for what is the coherence of the concept. We can even guess that a defensive approach was privileged.

    More can be said but essentially, this is it.

    in reply to: Germanwings airliner crashes in French Alps #476073
    TomcatViP
    Participant

    You know that there is nothing tangible for the Suicide theory… No close witness account, no written testimony, no known earlier attempt, no released CVR tape etc… We have only concurring proof recovered afterward on a striking fashion like the notebook and the unwritten testimony reportedly from doctors subject to patient’s confidentiality. That’s all. This case won’t stand long in front of a criminal court running a daily routine.

    I am not saying that this didn’t happens like the facts are portrayed, but we should remain cool minded and acknowledge that in such case his family owns the right to remember him as they knew him for real (as opposed by the prosecutor). Even more, we might see someone comes into the media spotlight* to ascertain how a sob he was.

    *Meanwhile, the press coverage is strangely muted when there are way more matters to draws concurring theory. And in that case, no Aliens involvement! But probably that’s why 😉

    Example:
    [ATTACH=CONFIG]245124[/ATTACH]

    in reply to: F-35 News and discussion (2016) take III #2180285
    TomcatViP
    Participant

    I am sorry but with Frontal optronic removed, MICA missile acting as IR sensors and a radar praised for being stackabe (hence cooperating with the signal processor via a protocol instead of sharing a commun sources of raw data), there are no more fusion in a today Rafale than what can be achieved with Spectra (and TV).

    This has been discussed ad-nauseum. Fusion is not what makes a display decluttered. It’s a multi-variable spectrum identifiable as a singular source.

    in reply to: The Atlas Cava #2180294
    TomcatViP
    Participant

    +1

    in reply to: A question for an aeronautical engineer #2180335
    TomcatViP
    Participant

    See Short Sherpa….https://en.wikipedia.org/wiki/Short_SB.4_Sherpa

    Interesting and original but worthless. Generating pitch up for a fwd centered aircraft with a section profile shaped for positive lift is like building a car for driving it in reverse!

    Ok, here is what the movable wingtip were meant to be:

    [ATTACH=CONFIG]245079[/ATTACH]

    The G38, the latter edition of the NAVAHO program was a missile aimed to cruise at Mach3- . At that speed, drag generated by aileron deflection can overcome the turning effect. Worst, the wing inside the turn face a slower airstream than the outboard wing with the according difference of dynamic pressure. The result can be a plane turning opposite than its wing down.

    PIO and Inertia coupling might aggravate the situation. As the plane is rapidly banked in the turn the long slender fuselage will generate adverse pitch and yaw (torque due to the rotation along the fuselage main axis with a non-uniform mass distribution ). The pilot will try to control it by rapidly applying opposite roll, pitch and yaw what could result in oscillations at high speed (see the crash of the X2 with Captain Mel at the control).

    [ATTACH=CONFIG]245084[/ATTACH]

    With moving wing tips, the wing in the turn is the one with the higher drag. The deflection of the tip remove some lift from the wing and generates drag on the same side.
    With the G38, North American engineers did even better. They adopted a diamond shaped wing (to decrease wave drag) and move the deflected surface closer to the CG, canceling (in theory) most of components generated by the inertia coupling**.

    As you can see, there are many design solutions that can be employed. But very few are relevant. This is the effect of converging design and natural efficiency*.

    *sry, just went to see an expo of Drones and can’t keep myself from pulling my hairs off in front of so much gabegie.
    ** The gremlin would come in the form of an hard to overcome flutters as the rotating axe (pivot) is perpendicular to the air flow

    in reply to: Military Aviation News #2181283
    TomcatViP
    Participant

    US spy plane cost $86m but ‘never used’

    John Sopko noted one programme that spent $6m to import rare blond Italian goats to help the Afghan cashmere industry.

    Oversight was so ineffective, Mr Spoko said, he could not be sure that the goats were not eaten

    Should PETA ends that noble intention?

    Also, I do not see why they didn’t choose a Bombardier. When it comes to short field,rough runways, time on transit and alt, there is no hesitation to have.

    in reply to: F-35 News and discussion (2016) take III #2181662
    TomcatViP
    Participant

    Or they are considering buying some F-35Bs obviously.

    That’s what I understood also.

    in reply to: F-35 News and discussion (2016) take III #2181699
    TomcatViP
    Participant

    The Golden Eagles are on their Way to Israel

    The preparations for the arrival of the first F-35 aircraft are under way. An exclusive review of the cutting-edge fighter aircraft expected to revolutionize the Israeli Air Force and the aerial warfare doctrine employed in the Middle East

    Dan Arkin | 24/03/2016

    http://www.israeldefense.co.il/sites/default/files/styles/full_article_image/public/_Uploads/dbsArticles/AU%201%20FF%20Aerial%201.jpg

    It will take place on Monday, December 12, 2016. In the presence of Israel’s national leaders, two F-35 fighters, IAF designation ‘Adir’, will land at Nevatim IAF base. According to international law, once the aircraft wheels have touched the ground, the aircraft is officially transferred to the possession of the Israeli Government. A technical flight team will approach the aircraft and attach the emblem of the newly-established IAF squadron – the Golden Eagle Squadron.

    At this time, four aircraft intended for IAF are already on the assembly line and the Israeli flag flies over the assembly station. On June 22, the roll-out ceremony will be held, where the first complete aircraft will roll out of the hangar. Next summer, the F-35 will make its debut flight appearance to the aviation world at the Farnborough International Airshow near London, England. The complete designation of this aircraft is F-35 Joint Strike Fighter (JSF). On December 12, the first pair of ‘Adir’ fighters will depart for Nevatim IAF base, Israel.

    In fact, the Golden Eagle Squadron already exists. It has a commander and functionaries, and the set-up team, made up of both air crew and ground crew personnel, is already hard at work. A demonstration simulator has already been installed at Nevatim in order to provide an initial introduction to the new aircraft. The real simulator, capable of simulating the entire range of the Adir’s performance, will be delivered in early 2017. In the summer of 2016, the first IAF pilots selected for the first Adir squadron will arrive at Lockheed Martin’s training facilities in the USA. Ahead of them, the men and women of the technical flight will arrive at the same facilities in order to study the maintenance secrets of the F-35. So, 2016 will become the Adir training year.

    All of the preparations at the Golden Eagle Squadron are progressing under unprecedented confidentiality restrictions imposed by IAF, whose history has included the assimilation of quite a few new fighter aircraft types. IAF sources explained that the strict confidentiality requirements were presented by the Americans, who are apprehensive about industrial espionage. Apparently, the Chinese and the Russians would love to learn the secrets of the F-35. Accordingly, the squadron buildings and the deep underground pens at Nevatim IAF base are all being erected by teams from the US Corps of Engineering. The secrecy of the aircraft systems and everything associated with it are kept strictly under wraps.

    The Lockheed Martin Corporation announced officially that “In the context of FMS (Foreign Military Sales – the agreements concerning military sales to foreign countries), the Director General of the Israel Ministry of Defense had signed, on October 7, 2010, a document for the procurement of F-35 aircraft (conventional landing and take-off). The agreement includes cooperation between the two countries with regard to technologies and know-how and an opportunity for manufacturing by the Israeli defense industries. While the Israeli Air Force plans a reduction of its old F-15 and F-16 squadrons, the F-35 will continue to guarantee Israel’s global advantage. The Israeli Air Force designated the cutting-edge aircraft ‘Adir’.”

    The aircraft is currently operated out of 10 airbases. So far, 145 aircraft were commissioned, logging 45,000 hours. More than 240 pilots and 2,400 maintenance personnel have been trained. In July 2015, the US Navy announced that they had declared the aircraft operational. USAF is in the process of establishing one operational squadron this year. 12 aircraft will be delivered to the UK, Australia, Italy, Holland and Norway and in the future – to Japan, South Korea and Israel. So far, more than 160 aircraft were manufactured and 105 were delivered. The procurement plan calls for 600 aircraft to be delivered to allies of the USA and 2,443 aircraft to be delivered to the three armed services of the US military.

    “We must revise our Doctrine”

    Some lucky IAF officers were already introduced to F-35 aircraft that are in use in the USA. Brig. Gen. Amiram Norkin visited the USAF training base, “checked the goods thoroughly” and had this to say: “We are used to flying low with our F-16s and F-15s. Now we must revise our doctrine. The F-35 has a small signature and this will enable us to fly higher. It is a fifth-generation aircraft that requires fifth-generation tactics. It will change the Middle East.” Even before the final decision was made and the procurement contracts were signed, the commander of IAF in those days, Maj. Gen. Ido Nechushtan, had said “This aircraft has a unique operational added value. If the State of Israel possessed something as unique as the F-35, especially if we were the only ones possessing it – it would have a strategic significance.” Nechushtan flew the simulator and his impression was that “A major part of it is in getting to know and understand the operation of the sensors that provide the pilot with extensive information.” Later on, Col. Dror, who in those days was Head of the IAF Weapon Systems Department, also flew the F-35 simulator and said “It was definitely impressive. The advanced ergonomics in the cockpit enable personal adaptation to the requirements of every (individual) pilot. I was airborne for 40 minutes and executed a vertical take-off and landing.” Col. U., who was the Head of the IAF Budget & Auditing Department, said that “In this deal of a multi-mission aircraft, IAF knew what it wanted operationally. The plan is an IAF plan. We have extensive experience, but this deal is more challenging owing to the innovative nature of a fifth-generation aircraft. The strategic situation in the Middle East and our current operational need had led us to want to be the first.”

    Like any other new aircraft, the F-35 had its share of ‘childhood diseases’. This was further inflated by reports, rumors and slander by competitors regarding delays in the project timetable and malfunctions identified in the various systems. Shiki Shani, CEO of Lockheed Martin Israel, assured us that “The project has safely negotiated the labor pain stage. The delivery timetable vis-à-vis all of the various air forces is being adhered to very strictly. The manufacturer won a difficult and prolonged competition over others, and it is normal for competitors to try and subvert the winner. The bottom line is this: there is no other aircraft like the F-35 anywhere in the western world today.

    “Why does IAF need the F-35? The fourth-generation aircraft, F-16 and F-15, are becoming obsolete. IAF decommissions some of its aircraft and needs to fill the ranks. The first F-16 aircraft are already being decommissioned and the first F-15 aircraft have reached the end of their service life. In the theater of operations surrounding us there are, and there will be, the latest surface-to-air anti-aircraft batteries like the S-300 and S-400. IAF must have the ability to shoot down without being shot down, hence the importance of stealth. Another characteristic that is important to the theater: the ability to take off and land using short, 100-200 meter long runways. Short take-off and vertical landing. All of these capabilities are offered by the ‘Adir’.”

    Paul Poitras, a senior executive at Lockheed Martin, had this to say about the importance of the aircraft’s stealth capabilities: “The integration of stealth and the other systems of the aircraft and its performance characteristics yield a result that is greater than the sum of its parts. Stealth does not make the F-35 completely invisible, but it disrupts the enemy’s ability to spot and destroy you. The aircraft is built so as to push away Radar energy. The energy will slide off the surface of the aircraft frame just as water slides off a smooth pebble.”

    Airborne Surveillance Station

    The stealth characteristic determined the external shape and geometrics of the F-35. Admittedly, its Radar signature is not nil, but it is very small, which makes it difficult to lock onto it in order to launch munitions against it. The aircraft frame is made from special materials painted with layers of coating and Radar-absorbing paints. This special airframe structure calls for maintenance methods that are different from those used on previous-generation fighter aircraft: drilling or riveting through the aircraft frame are impossible, so as not to damage the paintwork layers and composite materials that provide the aircraft with its stealth characteristics. This was the reason for the Americans’ aspiration to have the maintenance of all F-35 aircraft performed centrally at maintenance centers deployed around the world, manned by Lockheed Martin specialists and containing their own stores.

    IAF does not like this method – and that is an understatement. It has always preferred to service and maintain its aircraft on its own. Lockheed Martin assured us that agreements were already reached with the Pentagon, and that this controversy will be resolved. IAF will become a part of the global maintenance system, but some maintenance procedures will be performed at home.

    Shiki Shani, CEO of Lockheed Martin Israel, a former senior IAF officer and pilot, praises in particular the pilot helmet and the intelligence data processing options available to the Adir pilots. These capabilities involve computer systems and sensors that translate data into targets: “This aircraft is particularly suitable for the present generation of youngsters who were born into the era of personal computers, smartphones and iPads. Pilots tell me that flying this aircraft is similar to a computer game. It is important because it leaves the pilot of this single-seater fighter sufficient time to absorb the information, process it and, naturally – to fight. For example, how do you launch a missile from an aircraft whose entire armament is carried internally? We use the Lock-before-Launch method – the pilot locks the missile onto the target, then opens the armament bay, the missile engine ignites, the missile starts to move and departs toward the target. The pilot performs almost all of these procedures using his helmet. The helmet and sight system by Rockwell Collins and Elbit are a breakthrough: Look and Shoot – the pilot moves his head, spots a target/threat at a range of 100 miles and launches. The missile may be launched from the pilot’s own aircraft or from a neighboring aircraft. The helmet alone, for all of the aircraft, is a 2.5 billion dollar project.”

    An American test pilot said about the helmet that “It has a dual screen, a noise filter, it is adaptable for night flying, offers 360-degree vision including the ability to look down, below you. The F-16 informs you that a problem exists and what the problem is. The F-35 not only alerts you of a problem – but can also fix it.”

    The cockpit of the F-35 has been defined as an airborne surveillance station. The information available to the pilot regarding targets for attack in real time is more extensive than in any other fighter aircraft. The pilot can determine which blips on his Radar screen represent ‘good guys’ and which ones represent ‘bad guys’, as the various software packages on board the aircraft synthesize the information and prioritize it for the pilot, telling him which targets are ‘friend’ and which are ‘foe’.

    Such an extensive range of software might one day prove tempting to computer hackers and destructive aviation hackers. The designers had taken this into consideration, and the F-35 is fitted, as part of its super computer, with a highly rigid cyber security system to prevent cyber warfare attacks against the aircraft while it is in the air, on the ground or even at sea (on board an aircraft carrier). Mike Panchenko, cyber warfare engineering chief at Lockheed Martin, adds that “To ensure the safety of the F-35, we employ the Cyber Kill Chain – a special kit for suppressing threats, including cyber warfare threats.”

    Excellent post Vnomad. Thank you for sharing.
    I particularly like the emphasis put on the strategical meanings of having such platform. Pedantically speaking, It’s great that they didn’t miss this primordial aspect. Even in a press report.

    in reply to: SAAB Gripen and Gripen NG thread #4 #2181704
    TomcatViP
    Participant

    Very funny.

    Brazil is a partner not a regular customer. And in any case, all companies base their whole business on transferring the cost to the customer — who else should cover the costs? Show me a company that that gives away things for free…

    I think you’re mixing Price (hence profit margin) and cost. IKEA business analytic (as yourself can do it while sweating to get the thing properly done before the patience of your gf/wife and kids reaches an end) clearly ends at lowering the cost of manufacturing, transporting and fixed assets.

    The problem is that cheap doesn’t mix well with a lower output in mil aero. There are long term investment that can’t be cut and I feel like there are traces of that in what was shown of the manufacturing line. It’s my own opinion obviously but you will understand that if I am right, any HAL engineers that have been part of the program since its inception won’t have much difficulties to draw the same conclusion.

    in reply to: SAAB Gripen and Gripen NG thread #4 #2181787
    TomcatViP
    Participant

    There is a lot in Ikea that is contestable in that context. Explicitly when all about their business model is to transfer cost to the customer.

    I have watched extensively the scenes of the Grip E assembly and it remains to be seen for me if “Cheap” does not transfer to the same idea.

    Training is not cheap, for sure but a perfectly designed assembly process is theoretically made for… chimps. 😉

    in reply to: Military Aviation News #2181793
    TomcatViP
    Participant

    The South African Air Force (SAAF).

    Possible permanent grounding for either Gripen or Hawk coming

    There are only five pilots who can fly the 26 Gripens, half of which are already in storage. The pilot shortage comes as a result of the resignation of three senior pilots late last year with a further currently in the process of leaving the air force.

    !!! What a sad story.

    in reply to: SAAB Gripen and Gripen NG thread #4 #2181800
    TomcatViP
    Participant

    With the Gripen, effectively none. Both Raf and Grip adhere to an intensive manual process for their assembly. This makes for the necessary flexibility and grant a lower need in investment when you’ve to deal with a much lower output.

    On the contrary, the F18 is more automatized (see time lapse of production). This will grant a similar man-hour ratio and lower the need of highly trained operators that are always available in scarce quantity in a country with a raising aeronautical industry such as India. This would even greatly favor the training of new ranks of employee and increases the momentum for the Indian aeronautical industry.

    As I have said before, the F18 offers much more than any of its competitor in term of perspectives*. The RoI IMOHO is straightforward both in term of industrial capacity and formation than in capital. There is no more ideally suited candidate for the Make in India project.

    The F16 is slightly behind. The perspectives of being yet another F16 assembler does not yield as much of a momentum. And even if LM transplants the entire F16 assembly in India, it will be certain IMOHO that other user’s concerns will conflict with any ideal of monopoly and large scale of order/work. Also the industrial potential seems to me less with the 16, a slightly older design that in terms of production technologies seems to lag behind.


    *The SH would be then an US/India airframe. Bi-lateral synchronicity and having to deal only with a single partner but yet having the luxury a large fleet to sustain is the absolute ultimate fruit of such a deal. It’s unique.

Viewing 15 posts - 3,091 through 3,105 (of 5,621 total)