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Messages - sirius

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Parts in question from (

In a 2002 story about the T-50, the advanced jet trainer on which the FA-50 is based, FlightGlobal reported that BAE Systems was selected to supply the integrated mission display computer, APX-118 identification friend or foe with interface to a traffic collision avoidance system, wide field-of-view head-up display, colour cockpit television system, and integrated up-front control.

UK firm Martin Baker also supplies the jet’s ejection seats.

Might be of interest for this topic, from  NASA's Contributions to Aeronautics Volume 1 (page 126):

Whitcomb's legacy is found in the airliners transports business jets and military aircraft flying today that rely upon the area rule fuselage supercritical wings and winglets for improved efficiency The fastest highest flying and most lethal example is the US Air Force's Lockheed Martin F 22 Raptor multirole air superiority fighter Known widely as the 21st Century Fighter the F 22 is capable of Mach 2 and features an area rule fuselage for sustained superSonic cruise or supercruise performance and a supercritical wing The Raptor was an outgrowth of the Advanced Tactical Fighter ATF program that ran from 1986 to 1991 Lockheed designers benefited greatly from NASA work in fly by wire control composite materials and stealth design to meet the mission the new aircraft The Raptor made its first flight in 1997 and aircraft reached Air Force units beginning in 2005

General Discussion / Re: Black Hawks for the PAF?
« on: June 19, 2020, 08:22:10 AM »
What happened to the Mi-171 deal? I thought they were in Russia recently to inspect the production line. Couldn't get a CAATSA waiver?

Take delivery and settle any deficiencies at court.


it's not over until it formally expires. i think this is the philippines taking a page out of The Art of the Deal and I applaud them for it.


PLAAF Senior Pilot Reveals Poor Performance in Joint Exercise With RTAF

An early December 2019 report from inside of the People’s Republic of China (PRC) reveals previously unreleased technical details of People’s Liberation Army Air Force (PLAAF) Russian-built Su-27s losing a majority of engagements in a November 2015 joint exercise with the 701 Fighter Squadron of the Royal Thai Air Force (RTAF). This Thai unit operates eight Saab JAS-39C and four JAS-39D Gripens.

The engagements, known as Falcon Strike 2015, were the first of three such exercises and were detailed in a lecture given by one of the PLAAF’s most heavily decorated pilots, Senior Colonel Li Chunghua Hua (李中華), at the PRC’s Northwestern Polytechnical University (西北工业大学) in Xi’an, Shaanxi Province.

Li is described as one of the most experienced Sukhoi Su-27SK/J-11A pilots in the PLAAF with some 3,200 hours in fast jets, much of them in the Russian-made Sukhoi.  His revelations are unprecedented and are assessed by US intelligence as demonstrating a growing concern within the officer corps over deficiencies with the training regime for the PLAAF’s pilot cadre.


Which model of the JAS-39? E/F would be closer in performance to the F-16V but C/D would be more friendly to the budget... I guess it would be a matter of whether or not the Saab offering meets the minimum requirements, then they win as the lowest cost qualified competitor?

General Discussion / Re: PH Navy launches procurement web app
« on: December 13, 2019, 09:28:10 PM »
As someone who has played around in the SIPRI databases more than I care to admit, I think this is great. Will the army and airforce have a similar service?

General Discussion / Re: Explosion off Hainan
« on: November 27, 2019, 11:15:19 PM »

The only credible sources I've found on the matter cast doubt about the story

General Discussion / Re: Philippines reveal multirole fighter options
« on: November 19, 2019, 09:46:38 AM »
First time I've heard Typhoon mentioned as an option, was also under the impression the F-16s pretty much already had this in the bag.

See, I had read differntly, that Saab had it in the bag

Was skeptical then and still skeptical now

RPG production to the Philippines?

What kind of corvette will it be? The Pohang class doesn't have a direct replacement, instead it seems Korea is giving most of its duties to the PKX-A and PKX-B class of patrol ships. P30 Billion = ~$575 Milion, which is pretty steep for 2 corvettes.

Here is the issue.

OK, I think I see what's going on here. You are making a distinction between line of sight and over the horizon radar whereas I am not, and did not in my original post.

I'm not really interested in confusing the issue by arguing semantics/nomenclature. The bottom line is, there are radars that exist that can detect ballistic missiles prior to the terminal phase and it would not exactly some exotic technology that makes it unobtainable for the Philippines, especially given the current situation. I guess it's just a matter of how they want to prioritize acquiring such a system, though I would argue that not being included under the American BMD umbrella makes it more of a priority than not.

It IS exotic. That's why I was emphasized the distinction between "conventional" and OTH radars.

The countries that actually have Over-The-Horizon radars actually often developed it themselves (Taiwan is an exception). Look up OTH radars yourself. They require VERY large tracts of land for the system to work. Even when it does work . . . its reliability has reportedly been questionable because of variability of atmospheric conditions.

The research shared earlier actually point to the original body of research assembled on the forum a few years ago. Check it out.

Maybe 30 years ago it was exotic. You keep citing the fact that few countries developed it as if it's some kind of forbidden fruit that only the enlightened can obtain. But I think the reason most countries don't have it are for the following reasons: 1) they already fall under some BMD umbrella 2) They don't have an adversary that presents a realistic ballistic threat 3) They can't afford to have it

I don't think the situation is quite as dire as Taiwan, but the way things seem to be going, I almost feel that the Philippines can't afford NOT to have some kind of early warning system in place.

being at sea isn't an absolute requirement, Japan opted to use AEGIS Ashore over THAAD

That’s a terminal phase system.

Terminal High Altitude Area Defense (THAAD) is a transportable system that intercepts ballistic missiles inside or outside the atmosphere during their final, or terminal, phase of flight.

Note that the Japanese Atago and Kongo class cruisers are their first line of defense that are meant to engage North Korean missiles earlier in their flight — potentially in the mid-course phase — by being closer to potential launch sites.

You must have misread. I was talking about AEGIS ashore. Not THAAD. Not the shipborne AEGIS.

Our disagreement is in the importance of those details :-)

The devil is in the details man, and to lump all radars together into one category is actually no different from how the press lumps every vehicle with tracks as a "tank", or how any aircraft with a propeller is a WWII-era "Tora-Tora".

Lots of points are missed, and lots of context lost.

For context, I am an American, and I could never imagine not knowing that a missile was launched at me until it hit. This is the whole reason I'm in this discussion in the first place, I'm curious... how are Filipinos able to tolerate this? Is it just because they're too busy in their day to day lives to worry about it? During the Cold War, when a defecting MiG-25 was able to penetrate deep into Japanese territory before they knew about it, it became a priority to make sure that could not happen again. I just found it shocking that a missile could be fired and the Philippines can be like "We didn't even know it happened, hopefully we found out what actually happened"

Let me ask you for the sake of discussion, when should the Philippines look to acquire the ability to detect ballistic missile launches? 5 years? 10 years? 20 years? Never? What's the most prudent way to obtain this ability? Acquiring a system from abroad? Developing the indigenous electronics industry? Asking Uncle Sam to let you in?
That is a VERY broad question whose scope needs further definition.

- What sort of missiles?
- What range?
- Launched from where?
- Directed at what?

Answers to the questions would determine if the solutions already shared above are sufficient, or whether alternative measures are required (e.g., space-based system which is actually what the US uses to detect the missile launches themselves, long-endurance high-altitude UAVs of the
GlobalHawk variety, AWACS, etc.)

As for developing technologies in-house, the following older discussions would be good to revisit:

Creating a Philippine equivalent to DARPA/DAPA/DSTO and an SRDP roadmap

Sustainable weapons manufacture

I appreciate this response.

1. OTH radars - these are huge radars that use T/R antenna fields measuring in the acres/hectares. They employ atmospheric bounce and very high compute power to pull data from an otherwise highly cluttered radar picture caused by atmospheric interference. These are very exotic and are unlikely to be sold even to close allies. Australia developed their own OTH radar with some US assistance and they have one of the most recent OTH systems in the Western world.

Come on now... Duga had computers that used punch cards for crying out loud. Let's stop pretending like this is some kind of forbidden knowledge. If Philippines can't even manage technology at early cold war standards, then I don't know what to say. I understand the land argument but... Philippines can't find land for ballistic missile radar, but they'll find land for 10 more mega malls.

(not an argument, just a cynical joke.)

As shown in the Taiwan PAVE PAWs example, focusing on BDM alone would already would take up pretty much the entire AFP modernization budget

This is like saying it's impossible to move from the spot where I am standing because I can't afford a Ferrari. I'm not saying that the Philippines should be able to intercept missiles with a high probability by tomorrow. I just think at a minimum, being able to know that a ballistic missile has been launched by an enemy at the Philippines is an important thing to work towards.

The political ramifications, both domestically and with our kleptomaniac neighbor, will be interesting.


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