Talk:Crotale (missile)

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PRC HQ7 version

Where did the Chinese fish the plans for the Crotale? David.Monniaux 09:08, 21 July 2005 (UTC)[reply]

Several sources indicate that the PRC was arranging for the missile to be locally produced, along with a bunch of others (i.e. Italian Aspide AAM), and had obtained basic technical data from its manufacturer. Nothing unusual. Since the Tiananmen massacre and its political fallout, however, the PRC might have resorted to "other means" (i.e. espionage). It's the same with most of the modern comabt systems.

According to SDF [1] , Thomson CSF exported several R440 Crotale and Sea Crotale systems to China in late 1970s. Two R440 Sea Crotale systems were installed on PLAN ships for evaluation, the #109 Kaifeng (051 Luda class) and #112 Harbin (052 Luhu class) along with Thomson-CSF TSR 3004 Sea Tiger E/F band radar.

At the time PLAN was looking to upgrade its naval ships with air-defense capability. They also looked into imported the British GWS 30 Sea Dart SAM system for installation on 2 Luda DDG's, along with the radar and fire control systems. But the Brits wanted $150 million USD in 1983 and the PLAN thought it was too expensive, so ultimately the cheaper French system was selected.

After 6/89 Tianmen Square incident, European countries imposed arms export ban to PRC. But I suspect the French probably just sold the R440 Crotale design to China for reverse engineering. Considering the latter Chinese HQ-7A and Pakistani "Crotale 4000" upgrade programs, it wouldn't surprise me if they sold some of the VT-1 missile upgrade tech too. -- Adeptitus 17:14, 27 June 2007 (UTC)[reply]

Every mention

of finland, with the pictures of the CROTALE NG should be removed from this article as these both the system and the missile are totally different. —The preceding unsigned comment was added by 62.248.159.240 (talk) 01:25, 16 April 2007 (UTC).[reply]

Crotale NG and Multi-Shield 100

I'd like to propose we separate the R440 and Crotale NG into 2 wikipedia entries. -- Adeptitus 17:14, 27 June 2007 (UTC)[reply]

Liberty missile:

Perhaps some mention should be made of the Liberty SAM which was developed for the United States FAAD program before losing out to ADATS? The Crotale NG with it's VT-1 missile is largely based of the technology developed during the FAAD program. —Preceding unsigned comment added by 71.80.127.242 (talk) 02:16, 10 June 2008 (UTC)[reply]

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Photos and captions

Why do the missile tubes in the top photograph appear to be much more slender and/or longer than the other images? They look like they are half the thickness of the other tubes in the other photos. They look like they are sized to fit a missile the shape of a Sidewinder missile, but the other tubes are far thicker and/or shorter. Why is that? Are those like quad-launch tubes, with four missiles in each tube, or what?

Also, I'm really questioning the claim that the launcher on shown at the bottom is a "stealth" launcher. There is nothing stealthy about that launcher; look at all those bare steel fittings and parts, round tubes with exposed brackets. All of those would be very visible to radar. A single small cowling that looks vaguely "Stealthy-shaped" does not make it a "stealth" launcher, even if it is in fact made out of the right material. I would like to see a strong reference for that claim before I believed it. Just because it looks like it's stealthy doesn't mean that it actually is. That's like saying putting a faceted "stealth" nose-cone on a B-52 is going to make it s "stealthy" aircraft. Not bloody likely. It might reduce the total average signature by a percent or two, but it is by no means going to make it "stealthy"..45Colt 22:30, 5 December 2015 (UTC)[reply]

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écartométrie / Ecartometry

Ecartometry doesn't seem to be an English word. Triangulation or trigonometry would seem to be closer. I suspect the system is close to an Automatic command to line-of-sight system.

https://www.linguee.com/french-english/translation/%C3%A9cartom%C3%A9trie.html --Kitchen Knife (talk) 14:24, 13 October 2022 (UTC) It is not common in French however this definition makes sense. "Étymologie[reply]

   (Date à préciser) Mot dérivé de écart, avec le suffixe -métrie.

Nom commun Singulier Pluriel écartométrie écartométries \e.kaʁ.tɔ.me.tʁi\

écartométrie \e.kaʁ.tɔ.me.tʁi\ féminin

   Façon, méthode, de mesurer l’erreur (l’écart) entre le point visé et le point effectivement atteint.
       L’écartométrie d’un radar.
       La poursuite angulaire est habituellement assurée sur les stations standard par un récepteur spécialisé (récepteur d’écartométrie). — (L’Onde électrique, Volume 55, 1975)

écart"

" Etymology

   (Date to be specified) Word derived from écart, with the suffix -métrie.

Common noun Singular Plural écartométrie écartométries \e.kaʁ.tɔ.me.tʁi\

gapometry \e.kaʁ.tɔ.me.tʁi\ female

   A way, method, of measuring the error (deviation) between the target point and the point actually reached.
       The deviation of a radar.
       Angular tracking is usually provided on standard stations by a specialized receiver (deviation receiver). - (The Electric Wave, Volume 55, 1975)

deviation"

The IR sensor seems to be mounted with the acquisition radar, pointing on the same direction, as IR is high frequency than the Radar then it should have better resolving power and so accuracy.

So "Ecartométrie Différentielle InfraRouge, "InfraRed Differential Ecartometry"" Should be "Ecartométrie Différentielle InfraRouge, "InfraRed Error Detection/Correction"" --Kitchen Knife (talk) 18:04, 13 October 2022 (UTC)[reply]