MiG-21
4 participants
aeronewsline :: Accueil :: Histoire :: Aéronefs 1956 à 1965
Page 5 sur 25
Page 5 sur 25 • 1, 2, 3, 4, 5, 6 ... 15 ... 25
Re: MiG-21
DayAfter- CLUB
- Messages : 20630
Re: MiG-21
- F-7M Airguard Improved J-7II variant for export with western avionics, with [Vous devez être inscrit et connecté pour voir ce lien] as the prime contractor. Program initiated in 1978 and took six years to complete, after 10 rounds of negotiation. Western avionics includes:
- British Type 226 Skyranger radar: Ranging radar that weighs 41 [Vous devez être inscrit et connecté pour voir ce lien] with a range of 15 km.
- British Type 956 HUDAWAC: This HUD has a build-in weapon aiming computer, hence the name Head-Up Display And Weapon Aiming Computer.
- British Type 50-048-02 digitized air data computer
- British Type 2032 camera gun, which is linked to HUD with capability to interchange rolls of film while airborne. Each roll of film lasts more than 2 minutes
- American converter that is over 30% more efficient in comparison to the original Chinese converter.
- American Type 0101-HRA/2 radar altimeter with range increased to 1.5 km in comparison to the original 0.6 km of the Chinese radar altimeter it had replaced.
- British AD-3400 secured radio with range in excess of 400 km at 1.2 km altitude.
- Other improvement includes domestic newly designed CW-1002 air data sensor developed in conjunction with the western avionics, and WP-7B/WP-7BM engine.
- A totally different wing enabled the take-off and landing distance to be reduced by 20%, while increasing the aerodynamic performance in dogfights. According to customers' claims, F-7M is nearly 40% more
effective than [Vous devez être inscrit et connecté pour voir ce lien] in terms of overall performance. It can use French [Vous devez être inscrit et connecté pour voir ce lien] and PL-7 [Vous devez être inscrit et connecté pour voir ce lien]. It was sold to [Vous devez être inscrit et connecté pour voir ce lien], Egypt and [Vous devez être inscrit et connecté pour voir ce lien] in 1980s. - [Vous devez être inscrit et connecté pour voir ce lien] contribution: Although [Vous devez être inscrit et connecté pour voir ce lien] did not purchase any F-7M and later returned all 20 F-7M's to China
after evaluation to require China to provide a better fighter (which eventually resulted in F-7MP/P), Pakistan did provide important support for F-7M program, including: - In the last quarter of 1982, test flights revealed that the radar was plagued by the problem of picking up ground clutter. China did not have any western radar assisted air-to-ground attack experience, and had no idea of conducting the necessary flight tests specifically designed for the western avionics to solve the problem. Pakistani Air Force provided pilots (including [Vous devez être inscrit et connecté pour voir ce lien] pilots) to China to perform these tests and helped in solving this problem.
- Chinese 630th Institute responsible for F-7M program lacked the facility and experience to conduct live round weapon tests with advanced western avionics, and it also lacked the capability to conduct mocked air combat with western aircraft. Therefore from June, 1984 to September, 1984, two F-7Ms were sent to [Vous devez être inscrit et connecté pour voir ce lien] to conduct such tests. [Vous devez être inscrit et connecté pour voir ce lien] once again provided F-16 pilots to help to complete the tests, with the Chinese team in Pakistan led by Mr. Chen Baoqi (陈宝琦) of the Chinese Aviation Ministry and Mr Xie Anqing (谢安卿) of Chengdu Aircraft Co.
DayAfter- CLUB
- Messages : 20630
DayAfter- CLUB
- Messages : 20630
Re: MiG-21
- F-7MF Italian-proposed export version of the J-7MF armed with a proposed FIAR Grifo-M radar. The plan was abandoned in favor of the [Vous devez être inscrit et connecté pour voir ce lien]/JF-17, but the aircraft was reportedly used to test the FIAR Grifo-S radar for [Vous devez être inscrit et connecté pour voir ce lien]/JF-17.
However, it is rumored that of the a total 80 F-7PG ordered by Pakistan, the last 30 were switched to the F-7MF, but this cannot be confirmed.
DayAfter- CLUB
- Messages : 20630
Re: MiG-21
F-7MG Export variant of the J-7MG, with the single piece windshield replacing the 3-piece windshield of the J-7MG. Evolved to F-7BG. Zimbabwe bought at least 12 of these in 2004.
DayAfter- CLUB
- Messages : 20630
Re: MiG-21
- F-7P Newly-built Skybolt for the [Vous devez être inscrit et connecté pour voir ce lien] (PAF). A total of 60 were built. Starting with this model, F-7s in the Pakistani service began to be upgraded with the Italian FIAR Grifo-Mk-II radar license assembled by the [Vous devez être inscrit et connecté pour voir ce lien] certified [Vous devez être inscrit et connecté pour voir ce lien] avionics, Electronics and Radar Factory of the [Vous devez être inscrit et connecté pour voir ce lien] (PAC).
DayAfter- CLUB
- Messages : 20630
Re: MiG-21
In comparison to the Grifo-7, the new radar only weighs an extra 1 kg (56 kg total), but the sector of scan was increased to ±20 degrees from the original ±10 degrees of Grifo-7. The newer radar also had improved [Vous devez être inscrit et connecté pour voir ce lien] and look-down and shoot-down capability, and can track 4 targets simultaneously while engage one of four target tracked.
DayAfter- CLUB
- Messages : 20630
Re: MiG-21
- F-7PG Export variant of the J-7PG, with the single piece windshield replacing the 3-piece windshield of the J-7PG. Pakistan ordered a total of 80 in two batches, with 50 and 30 respectively in each. According to the [Vous devez être inscrit et connecté pour voir ce lien], the performance at high altitude of the F-7PG has increased more than 83% in comparison to the F-7P/MP. Just like the earlier Italian FIAR Grifo-Mk-II radar on F-7MP/P, the Italian FIAR Grifo-MG radar of F-7PG will be assembled under license by the [Vous devez être inscrit et connecté pour voir ce lien] certified [Vous devez être inscrit et connecté pour voir ce lien] avionics, Electronics and Radar Factory of the [Vous devez être inscrit et connecté pour voir ce lien] (PAC).
DayAfter- CLUB
- Messages : 20630
Page 5 sur 25 • 1, 2, 3, 4, 5, 6 ... 15 ... 25
aeronewsline :: Accueil :: Histoire :: Aéronefs 1956 à 1965
Page 5 sur 25
Permission de ce forum:
Vous ne pouvez pas répondre aux sujets dans ce forum