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Israel's version of the F-15E is much more modified than the 'classic' F-15s and hence they received a different designation, F-15I. The popular name is Ra'am. The F-15I differes from the F-15E mainly in three ways: the small diameter counterweights on top of the vertical stabilisers are like on the export F-15A through D, so both with a small diameter. Additionally, there are two sensors extending from between the horizontal stabilisers and engines, with a rectangular cross section at the end. Finally, the F-15I has Pratt & Whitney engines, but with covered struts. The plates are slightly different than those of the GE engine. Note that some F-15Is have a dome shaped antennas directly behind the canopy which makes it easy to recognise an F-15 as an I model.
f-15 eagle
Typically for a fighter designed in the early 1970s the F-15 Eagle has double vertical stabilisers, cropped delta shaped wings, wedge shaped air intakes at the side of the fuselage and bubble canopy. Distinctive compared to similar aircraft are the tops of the vertical stabilisers, with pencil shaped counterweights pointing forward. They can have different sizes, depending on the exact version. Also the vertical stabilisers are not tilted.
As a replacement of the General Dynamics F-111 McDonnell-Douglas offered a two-seat bomber version of the F-15D, which won from the F-16XL. This F-15E is usually called the Strike Eagle, thanks to its role. The aircraft is nearly always equipped with conformal fuel tanks (CFT) along the sides of the fuselage. At the underside of the CFTs is a row of three pylons in tandem, with another row of three pylons tangentially at the side. Underneath the air intakes there is room for sensor pods. To carry all the heavy loads, the Strike Eagle has a beefed up nose gear with shimmy damper. The main gear is also larger, necessitating bulged main landing gear doors, although this is not clearly visible. Early models had main wheels with eight large holes like on the F-15C/D, but later F-15Es appeared with fourteen smaller holes. The F-15E retains the Pratt & Whitney F100 engines like the A, B, C and D models. They have typical, uncovered struts to move the nozzle petal plates. This is a way to distinguish the F-15E from (most) later models of the Advanced Eagle series. Originally, F-15Es had only a sensor with a flat, squared off 'knob' extending from the horizontal stabiliser pylon on the right. However, upgrades versions have one of the left as well, with a rounded end.
The Republic of Korea Air Force has its own version of the Strike Eagle, called F-15K Slam Eagle. They have similar sized, larger antennas on top of the vertical stabilisers like the Advanced Eagle variants. Also they can have General Electric engines with covered petal plates, but some have Pratt & Whitney engines with uncovered ones. Nearly all have single round knob sensors extending from the pylons holding the horizontal fins. However, photos exist of having only one on the right side.
f-15j
The MiG-25 and MiG-31 are also similarly shaped as the F-15. However, they have no bubble canopy, no forward pointing antennas on top of the vertical stabilisers, but do have two wheels on the nose gear.
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F-15S is the designation of the F-15E of Saudi Arabia. Initially, it only differed in the radar and having two small diameter counterweights on top of the vertical fins. However, most F-15S were upgraded with General Electric engines, with covered nozzle plates, and sensors with rectangular cross sectioned ends extending from the pylons holding the horizontal stabilisers. These modifications made the F-15Ss easier to recognise.
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The F-15E version for Singapore was the most advanced variant before the Advanced Eagle was developed. Initially, it was called F-15T, but in the end it became the F-15SG. Externally, the F-15SG is essentially the same as the Advanced Eagle variants, except that they cannot have two pylons under each wing. However, as the Advanced Eagles often don't have the second pylon installed, a distinction between the two variants is often not possible. Another, very small difference is an antenna on top of the left wing root, unique for the F-15SG.
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It all started, logically, with the A model, a single seat air defence version of the Eagle. The F‑15A has a cannon in the right leading edge extension of the wing. Missiles can be attached to the corner of the side and underside of the fuselage, and on single pylons under the wings, with each three storage points. Furthermore, the F-15A cannot be equipped with so-called conformal fuel tanks (CFT) along the side of the fuselage. The fairing behind the large air brake on top of the fuselage gradually tapers, giving it more or less a V or Y shape. Finally, the original main wheel rims have more holes than those of the F‑15C. However, many have later been fitted with F‑15C wheels. F-15As of the US Air Force have an ECM antenna on top of the left vertical fin that is larger in diameter than the counterweight on the right fin. Those delivered to other countries, like Israel (where they are called Baz), have equally sized counterweights.
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Note that older versions are sometimes upgrades with features from later variants. This makes a definitive recognition of the right version difficult.
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f-15战斗机
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The F-15B, briefly known as TF-15A, is esssentially a two seat version of the F-15A. The canopy it a bit larger above the rear seat, but not much longer. The F-15B can be recognised from the F-15D the same way as the F-15A from the F-15C. And like for other versions the USAF examples have a bigger ECM antenna on top of the left vertical fin than those of other countries.
Being of the same generation, the F-14 Tomcat is one of the fighters than mostly resembles the F‑15. The F-14 however has variable sweep wings, vertical stabilisers tilted outward and air intakes tilted inward. On the F-15 the stabilisers and air intakes are straight. Finally, the F-14 always has a double wheel nose gear and two seat cockpit.
f-15ex
The successor of the F-15, the F‑22 Raptor, also has two fins (but tilted outward), a bubble canopy and rectangular air intakes, but of a different shape when viewed from the side. Also the wings are more of a regular delta shape than a cropped delta.
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f15泄密
The F-15C is a much improved version of the Eagle, although on the outside the differences are limited. As a starter, the main gear rims have only eight large holes. Unfortunately, these can be put on A models as well. Next the F-15C can have conformal fuel tanks along the side of the fuselage, but many don't have them. Finally, the shape of the fairing behind the speed brake has a stepped taper. Originally, the F-15Cs had two similar shaped blade antennas under the nose. On later versions the front was is replaced by a longer, swept one. In Israeli service, these versions are also called Baz. They lack the bigger ECM antenna on top of the left vertical fin.
The two seat version of the F-15C has the same differences compared to the F-15B as the F-15C to the F-15A. Like the F-15C, the F-15D often has no conformal fuel tanks. F-15DJ is the Japanese designation for the two seat license-built Eagle. Like all export versions it has two small diameter mass balances on top of the vertical stabilisers. Moreover, the front blade antenna underneath the nose is longer than on the F-15D. See detail photo at F-15J below.
One special version of the F-15B was the Short Takeoff and Landing/Maneuver Technology Demonstrator (STOL/MTD). At first this aircraft had two dimensional thrust vectoring capabilities, with rectangular exhausts much like the F-22. It also had canards at the sides of the air intakes, with significant dihedral. Later, the 2D nozzles were replaced by 3D ones. These look more like regular exhausts, but slightly different.
The Fulcrum has the same basic characteristics as the F-15, with one big difference: the wedge shaped air intakes are underneath the fuselage instead of on the side of the fuselage. The same applies to the Sukhoi Su‑27 family.
These are all members of the Advanced Eagle family, a further development of the F-15E that was first introduced as the F-15SA for Saudi Arabia. In US service it has the designation F-15EX Eagle II, and the versions for Israel and Qatar are F-15IA and F-15QA respectively. The Advanced Eagles retain the tandem canopy, conformal fuel tanks and pylon configuration of the F-15E. Moreover, it has General Electric engines, with differently shaped and covered nozzle petal plates. Also unlike the F-15E are the similar sized antennas on top of the vertical stabilisers, although these are slightly bigger than say on the F-15J. Advanced Eagles have similar shaped sensors extending from the fairings of the horizontal stabilisers. Both have two knobs. The F-15E has a single knob sensor on the right side only, F-15Ks have a single knob on both sides. The Advanced Eagles have a triangular protrusion between the canopy and the air intake, with an additional sensor. Finally, the Advanced Eagle variants can have two pylons under each wing while all previous versions can only have one. This does not mean that they always have two pylons, making distinction with he F-15SG difficult.
The F-15J is basically the Japanese license-built version of the F-15C. Externally, it is not much different except for the similar sized counterweights on top of the vertical stabilisers, like on all export F-15s, and the longer front blade antenna under the nose. Unfortunately, upgraded USAF F-15Cs have them as well, but these are swept.