F-15 Engine

Early F-15A/Bs used two Pratt & Whitney F1OO-PW-100 turbofans, each rated at 23,830 pounds thrust with afterburner. Since all accessories (genera­tors, etc.) are mounted in the AMAD, the left and right engines of the F-15 are interchange­able, simplifying maintenance considerably.

The F100 is a two-shaft turbofan with a high-augmentation afterburner. The engine is equipped with a direct pitot-type titanium Intake with a fixed nose bullet. There are 21 inlet guide vanes in a single row equipped with variable-camber trailing edges. […]

F-14 Powerplant

Early in 1984, it was announced that the General Electric F110 powerplant was being procured to power the F-14A(Plus) and F-14D, as well as Air Force F-16 aircraft. The F110-GE-400 gen­erates a maximum of 23,100 pounds-thrust with afterburner as installed in the F-14B and F-14D. The F110 is designed for modular assembly to facilitate maintenance and repair, and numerous borescope ports are positioned along the engine for inspecting critical areas, such as the compressor, combustor and tur­bine assemblies. The core is basically a scaled-down version of the F101 that powers the B-1B coupled with a scaled-up version of the F404 (F/A-18A) fan assembly. In 1987 General Electric was awarded a $235 million four-year contract for 133 engines for the F-14B and F-14D. The contract also contained options for an additional 183 engines. […]

F-14 Avionics

A Hughes AN/AWG-9 weapons control system is fitted to the F-14A and F-14B. The basic sys­tem has been modified several times since its introduction to the fleet, with the current ver­sion installed in late F-14As and all F-14B air­craft referred to as the AN/AWG-9D (or Block IVA) configuration. This system has the ability to detect airborne targets at ranges of 75 to 195 miles depending on the target’s cross- sectional area, and the ability to track 24 enemy targets and attack six of them simulta­neously at varied altitudes and distances. The AN/AWG-9 system weighs 1,320 pounds, occupies 28 cubic feet and uses a 36-inch diameter flat planar pulse-Doppler antenna. […]

F-14 Wings

The variable-geometry wings have 20° of lead­ing edge sweep in the fully forward position and 69° when fully swept. An oversweep posi­tion of 75° is provided for carrier stowage and can only be engaged manually on the ground. The wing position is programmed automatical­ly for optimum performance throughout the flight regime, but manual override is provided. A short movable wing outer panel, needing a comparatively light pivot structure, results from a wide fuselage and fixed center-section glove, with pivot points 8 feet 11 inches from the centerline of the airframe. The inboard wing section, adjacent to the fuselage, arcs upward slightly to minimize cross-sectional area and wave drag. It consists of a one-piece electron beam-welded Ti-6A1 -4V titanium alloy assembly, 22 feet in span. […]

F-14 Radar

The F-14 D Tomcat incorporates a  Hughes AN/APG-71 radar, that is a major upgrade to the AN/AWG-9 system and was initially referred to as the AN/AWG-9 Block V. The transmit and receive portion of the AN/APG-71 is basically a digital version of the AN/AWG-9, but represents a reworking of virtually every part of the system.

 The new radar includes a low-side-lobe array antenna, digital scan control, monopulse tracking, frequency agility, and improved sig­nal processing capabilities. Only the transmit­ter, power supply, and aft cockpit tactical infor­mation display are retained from the AWG-9. Reliability is doubled and detection and track­ing ranges are increased by 40%. Many of the lessons learned from developing the USAF’s MSIP-II F-15 AN/APG-70 radar set were incor­porated into the AN/APG-71. […]

F-14 Landing Gear

Each main landing gear shock strut consists of an upper outer cylinder and a lower internal piston which has a maximum stroke of 25 inches. A constant 4-inch stroke remaining is provided in the static ground condition by a hard-step (31.000 psi) in the strut air curve. A side brace is mechanically extended from the inboard side of the strut outer cylinder to engage in a nacelle fitting, and thus provides additional side load support for ground opera­tions. The single-wheeled main landing gear elements retract forwards into wells inside the wing glove, rotating 90° to lie flat. Inboard, out­board, and aft main gear doors are individual­ly actuated closed in sequence to provide a fairing for the retracted gear. […]

F-14 Tomcat Fuselage

The F-14 features engines in separate nacelles, set well apart from each other so that damage to one of them will have minimal effect on the other. The main central and rear area of the fuselage consists of two separate engine nacelles joined together by a shallow flat area known as a pancake”. At the extreme rear of the aircraft, this pancake is little more than a decking between the engine pods. This leaves a deep tunnel between the engines which imposes a small drag penalty. However, it adds to overall lift, gives an extra attachment area for weapons pylons, and provides some additional fuselage space for fuel and equip­ment. The rear part of the broad between- engines pancake is gently curved upwards to reduce both the supersonic trim drag and the negative zero-lift supersonic pitching moment. […]