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Sukhoi Su-7 Su-17 Su-22

 

Su-22 Lybiens

Pendant le conflit les lybiens etaient sur les Su-22M (type le plus nombreux livre en Lybie) (AlexGRD)

Les Fitter du 19 août 1981 sont généralement donnés pour des Su-22 M3 (Fitter J). Évidemment on ne peut pas être sûr à 100% mais c'était le type le plus répandu en Lybie à l'époque. (The arrowhead)

En fait le Su-22M (M3) s' est pratiquement la meme chose avec les memes moteurs. Mais avec des differents radars/viseur laser. Dans la doc russe les deux passent comme Su-17M3 version "export" produit en petite serie en 1982-1983. Donc a suivre les nouvelle boites promises par ModelSvit qui ce sont arrete actuelement sur des versions Su-17M (M1) presente par 3 boites differentes. (AlexGRD)

Pour un M4, pas de souci. Pour un M3, le croupion est totalement différent, c'est clairement pas gagné, en effet. (Thud)

Pour la conversion le plus grand problemes sont le nez, la partie arriere avec un diamentre different (moteurs differents) avec ces nombrauses prises d'air). Vaut mieux attendre un -17M3. Modelsvit pretend dans ses discours de faire toute la famille 7-17-22. (AlexGRD)

Merci encore pour ces précisions "anatomiques" ! Je suis tombé sur Britmodeller sur ce schéma ... Est ce l'illustration des différences entre un Su-17 et un Su-22 dont on parle ?
http://www.britmodeller.com/forums/inde ... -fitter-j/

Oui si on ignore les versions M4. Su-17M4 et Su-22M4 ont tous les deux un réacteur Lyulka et donc le fuselage arrière "fin". (Lolo)

Les Fitter J lybiens sont équipés majoritairement de moteurs R29 (profil du haut, gros croupion, arête dorsale en plusieurs segments rectilignes). (The arrowhead)

 

Su-22 Peruvien

my understanding is that Peru only used Su-22 variants with the R-29 engine, not Su-17s.

The variants used were two: the original Su-22 was the equivalent (at least in terms of visual differences) of the Soviet Su-17M2 but with a different engine requiring a different rear fuselage and with a different fin-fuselage fairing (more angular on the 22)

Later the Su-22M was received, that is the equivalent of the soviet Su-17M3. Again, this has the different rear fuselage etc. The Su-22 and Su-22M differ in the front fuselage that is angled downward in the M.

The kit shown above is a Su-17M, that differs from both the M2 and M3 in the front fuselage, so this is not a good base even if the modifications to the rear fuselage are introduced.

If you know something about the presence of true Su-17s in Peruvian service, I'd sure like to know more ! If you know what versions these were, I can advice on the kit to use.

For a Su-22 at the moment the options are very limited as no kit that I know of correctly represents the rear fuselage of this type, although the Pantera/Mastercraft kits are the closest

 

To recap:

Su-22: same front fuselage of the Soviet Su-17M2. This is longer than the original Su-17/Su-20 (by 200 mm). Has a fairing under the intake for a Doppler ground speed system (that makes the version easy to recognise). The dorsal spine is slim, same as the original Su-17.

Su-22M: same front fuselage of the Soviet Su-17M3. This has a wider canopy and the area before the canopy is angled downward. There's no fairing under the intake. The dorsal spine is fatter where it meets the canopy.

All variants have the rear fuselage typical of the R29 engined variants, that is different from the Su-17. And all variants have a very angular spine/tailfin fillet while the Su-17s have a smoother transition.

Personally I consider the Su-22M one of the most interesting variants of this aircraft, it's a pity that there's no easy to build accurate OOB kit of this variant.

 

Généralités

Because Sukhoi made them like LEGO bricks - whole family of Fitters (Su-7, 17, "19", 20 and 22), Fishpots (Su-9 and 11) and Flagons (Su-15 and "21") uses just four types of wing, four types of propulsion (hidden in three types of rear fuselage), three vertical fins, two horizontal tails, and (excluding minor shape and equipment variations) five or six front fuselage types.

Leaving Fishpots and Flagons away (as well as the fixed-wing Fitter A) you have two basic generations of swing-wing Fitters and each of them exists with slimmer (Lyulka-engined) and fatter (Tumansky-engined) rear fuselage.

First generation uses the Su-7U (longer than basic Su-7/Su-9) fuselage and original Su-7/9/11 fin with rounded leading edge top. On the ground the fuselage is horizontal like in the Su-7/9/11 as the undercarriage remained unchanged from the fixed-wing variants. 994 were built in 1967-78.

The sub-types include: 1967 Su-7IG Fitter B (S-22I, AL-7F), 1969 Su-17 Fitter B (S-32, AL-7F), 1970 Su-17K Fitter B (S-32K, AL-7F), 1972 Su-17M Fitter C (S-32M, AL-21F), 1973 Su-20 Fitter C (S-32MK, AL-21F), 1974 Su-17M2 Fitter D (S-42, AL-21F), and 1977 Su-22 Fitter F (S-32M2K, R-29B).

Most of the second generation variants feature higher fin with sharp edges, but the key difference is visible on the ground - the main u/c is lower, the front one is higher and whole forward fuselage (with wide canopy and fat dorsal spine) is heavily drooped providing better cockpit view. 1873 were built between 1976 and 1990.

The sub-types with original (i.e. rounded) fin include: 1976 Su-17UM Fitter E (S-52U, AL-21F) and 1976 Su-22U Fitter E (S-52UK, R-29B).

Tall-tailed sub-types are: 1976 Su-17M3 Fitter H (S-52, AL-21F), 1978 Su-22M Fitter J (S-52K, R-29B), 1978 Su-22UM Fitter G (S-52UMK, R-29B), 1978 Su-17UM3 Fitter G (S-52UM3, AL-21F), 1979 Su-22UM3K Fitter G (S-52UM3, AL-21F), 1981 Su-17M4 Fitter K (S-54, AL-21F), 1982 Su-22M3 Fitter J (S-52MK, R-29B), 1983 Su-22UM3 Fitter G (S-52UM3K, R-29B), and 1984 Su-22M4 Fitter K (S-54K, AL-21F).

Designation system is very complex, as Su-17 (droop-nosed variants were briefly called Su-19) applies to all variants built for VVS with Su-17K, Su-20 and Su-22 left for the export customers. Moreover there's a factory system (S-22, 32, 42, 52, 54) using the same letter abbreviations for different aircraft, e.g. Su-22UM3 is S-52UM3K while Su-22UM3K is S-52UM3 ! Totally confusing

 

 

 

 

 

 

 

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