I Have a Store In the World of American Comics

Chapter 056 Epoxy Composites

The F-15 wing adopts an aspect ratio of up to 3, with a root-to-tip ratio of 5, which is conducive to delaying the separation of the wingtips and significantly reduces the induced resistance of the wing.

The larger aspect ratio increases the **** of the wing lift line and improves the wing lift characteristics.

At the same time, the aspect ratio increases, and the supersonic zero-lift drag coefficient also increases, which increases the trans-supersonic wave resistance.

This shortcoming is compensated for by the use of powerful engine thrust and other aspects of design.

The wing area is 56.48 square meters, the dihedral angle is 1°, and the installation angle is 0°. There are only four control surfaces on the wing, the trailing edge high lift **** and the ailerons.

The F-15 wing structure is also metal, the front beam is aluminum alloy, the rear three beams are titanium alloy, and the type is a multi-beam torsion-resistant box-type damage safety structure.

The lower skin of the inner integral fuel tank is made of titanium alloy panels, and the rest are aluminum alloy machined integral panels.

The front and rear edges of the wing, **** and ailerons are all aluminum honeycomb sandwich structures.

The damage safety structure of the wing, combined with the load-bearing skin, can support the aircraft to continue flying as long as one wing spar is still intact, which greatly improves the survivability of the aircraft.

The only thing to note is the F-15 vertical stabilizer and flat tail, both here are boron fiber composite, titanium alloy torsion box and honeycomb siding skin composed of full thickness aluminum core and boron-epoxy composite panels, sandwich Structure, equivalent to Oreo sandwich biscuits.

The torsion box of the two is a titanium alloy structure, and the front and rear edges are an all-aluminum honeycomb structure.

The rudder features carbon fiber-epoxy composite beam ribs and boron-epoxy panels and an aluminum sandwich skin.

Both the horizontal tail and the rudder can be interchanged left and right.

The vertical tail is designed with a large aspect ratio and a medium sweep angle. The leading edge sweep angle is 37°, and the camber is 2°. The height is relatively large. Under the high angle of attack, the aircraft's heading stability can be significantly improved, thus ensuring that the F-15 can Effectively conduct high angle of attack maneuvers.

The flat tail is designed with a large swept full-motion low flat tail, with a leading edge sweep angle of 50°, with a leading edge serration and a beveled wing tip design.

Performance data F-15 fighter basic parameters:

Crew: 1 (AC), 2 (BDE).

Captain: 19.45 meters.

Wingspan: 13.05 meters.

Machine height: 5.65 meters.

Wing area: 56.5 square meters.

Overall empty weight: 12973 kg.

Maximum take-off weight: 30,845 kg.

Reference performance:

Maximum flight speed: Mach 2.5.

Practical ceiling: 19800 meters (ABCD type), 15000 meters (E type).

Maximum range: 5745 kilometers (with conformal fuel tanks), 4631 kilometers (without conformal fuel tanks).

The C type is 5556 kilometers (with a suitable fuel tank and three external auxiliary fuel tanks), and the E type can reach 5741.2 kilometers with a suitable fuel tank and three external auxiliary fuel tanks, and 4444.8 kilometers when only carrying the auxiliary fuel tank.

Combat radius: 1967 km.

Rate of climb: 254 msec.

Wing load: 546 kg m².

Thrust-to-weight ratio: 0.85.

Limit overload: +9-3G.

Take-off roll distance: 274 meters (volley).

Landing roll distance: 1067 meters (volley, without parachute).

Endurance time: 5 hours 15 minutes (without air refueling), 15 hours (air refueling).

powerplant:

Engine: 2 F110 afterburning turbofan engines.

Afterburner thrust: 2 × 129 kN.

Fuel capacity: 6103 kg (internal fuel tank), 9818 kg (3 external fuel tanks and 2 conformal fuel tanks).

Weapon system bomb load: 7300kg-10705kg.

Missiles: AIM-7 air-to-air missile, AIM-9 air-to-air missile and AIM-120 air-to-air missile.

Aerial bombs: ordinary bombs, free fall nuclear bombs, GBU-28 bunker penetrating bombs.

Cannon: One M61A1 Vulcan cannon.

......

The model of these four F-15 Eagle fighter jets, considering the times, Zhou Wenwen believes that it should not be the F-15E that was equipped in large quantities in order to save Boeing in 2020 and 2021, nor the F-15SA.

Because the F-15E "Strike Eagle" is a two-seat supersonic all-weather fighter-bomber designed by McDonnell-Douglas on the basis of the F-15 with the main task of ground attack.

This is the F-111 successor aircraft developed and put into production according to the US Air Force plan in 1982. It has both ground attack and air superiority capabilities, so it can be called a dual-mission fighter.

The aircraft is basically the same as the F-15D in appearance, the fuselage structure is strengthened, and the engine compartment, cockpit and part of the structure are redesigned, which increases the range by 33%.

Focus on improving avionics equipment, including replacing the APG-70 radar and installing the Blue Shield pod to ensure target detection and identification and improve the accuracy of weapons.

The original two-redundant analog CAS was improved to a digital three-redundant fly-by-wire system with automatic terrain following capability and an advanced electronic cockpit display system, and a ring laser gyro inertial navigation system was used instead.

The weapon pylons have been doubled. In addition to the original pylons, there are 6 pylons beside each conformal fuel tank. The later engine is upgraded to F100-PW-229.

F-15SA, F-15SA is equipped with ANAPG-63(V)3 active phased array radar, advanced digital electronic warfare and radar warning suite, the latest cockpit display system, and can carry "TigerEyes" (TigerEyes) Infrared search and track system.

Due to the addition of 2 outboard hardpoints (hardpoint 1 and hardpoint 9) under the wing of the aircraft, in order to compensate for the resulting reduction in combat flight stability, Boeing adopted a model-based Fly-by-wire (FBW) flight control system.

The system also reduces the weight of the whole machine, improves the reliability of the flight control system, and also improves the dispatch rate of the aircraft.

And if the model of the four F-15 Eagle fighters is not F-15E or F-15SA, then the answer is only F-15A, F-15B, F-15ABMSIP, F-15C, F-15D, F- 15CDMSIP.

Zhou Wenwen remembers that the F-15A is a single-seat air-to-air combat version of the F-15 fighter, equipped with the F-100-PW-100 engine and the ANAPG-63 radar. It first flew on July 27, 1972, and flew in November 1974. Delivery.

If the model of the 4 F-15 Eagle fighters is not F-15E or F-15SA, then the answer is only ~www.wuxiamtl.com~ Zhou Wenwen remembers that the F-15A is a single-seat air superiority for the F-15 fighter. Combat version, equipped with F-100-PW-100 engines and ANAPG-63 radar, it first flew on July 27, 1972, and was delivered in November 1974.

But after the mid-1990s, the F-15A began to retire from the front-line force and transferred to the Air National Guard.

A total of 6 states have F-15As in the air "National Guard".

The F-15B is a two-seat coach type of the F-15A, originally called TF-15A, and later renamed F-15B.

Compared with the F-15A, its structural weight has increased by 363 kilograms. Although it has all the combat capabilities of the F-15A, it does not have the ANALQ-135 electronic jamming equipment equipped with A. The main difference in appearance is the addition of a rear instructor seat.

The rear-seat instructor seat has full maneuverability, good visibility, and can perform any maneuver within the flight envelope, including take-off and landing.

The F-15B was quickly left out of the list because the B-type was mainly used for training, so the rear seat was unable to control the avionics and weaponry used for combat.

The F-15AB two models are equipped with 7 air companies and 6 air 445 National Guard squadrons, as well as an air squadron of the Israeli Air Force.

......

To be continued

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Chapter 057 Preview F-15CDMSIP

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