🛩️ Fighter Jets: How They Fly and Fight

What you’ll learn

1. The Jet Engine Changes EverythingExplain how jet propulsion works and why turbojets, turbofans, and afterburners transformed fighter performance.Frank Whittle and Hans von Ohain independently invented the turbojet in the 1930s, and the Me 262 became the first operational jet fighter. Turbofans later added a bypass fan for efficiency, while afterburners spray extra fuel for short bursts of maximum thrust. A fighter's agility depends heavily on its thrust-to-weight ratio, which governs acceleration and climb.
2. Breaking the Sound BarrierExplain Mach number, shock waves, and how the sound barrier was first broken.Mach number is speed relative to the local speed of sound, which varies with altitude. As aircraft near Mach 1, air compresses into shock waves that once made control dangerous. Chuck Yeager first exceeded the speed of sound in the Bell X-1 in 1947, and supersonic flight drove new wing shapes like swept and variable-geometry wings to manage drag.
3. Generations of FightersTrace the documented evolution of jet fighters from the F-86 through the F-4, F-16, and stealth F-22 and F-35.The F-86 Sabre fought the first jet-versus-jet battles in Korea. The missile-era F-4 Phantom learned in Vietnam that dogfighting was not obsolete, spurring agile designs like the fly-by-wire F-16. The current generation, the F-22 and F-35, is defined by stealth and sensor fusion, shifting combat toward first detection.
4. How Radar and Stealth WorkExplain how radar detects aircraft and how stealth shaping and materials reduce detectability.Radar transmits radio pulses and times the echoes to find range, speed, and direction, with modern electronically scanned arrays scanning rapidly. Stealth reduces the radar cross-section chiefly through shaping that deflects energy away, aided by radar-absorbent materials and internal weapon bays. The contest between radar and stealth is a continuous technological duel.
5. G-Forces and the Pilot's BodyExplain the effects of high g-forces on pilots and the technology and techniques used to survive them.High g-forces multiply a pilot's weight and drain blood from the brain, risking grayout and G-LOC. Pilots counter with inflating g-suits and the anti-g straining maneuver, trained in centrifuges. When an aircraft is lost, the ejection seat rockets the pilot clear, even at zero speed and altitude, as a final means of survival.
6. Dogfights to Beyond Visual RangeExplain the shift from close-range dogfighting to beyond-visual-range combat and the missiles and countermeasures involved.Traditional dogfights were decided by maneuvering to get behind an enemy at close range. Radar and long-range missiles enabled beyond-visual-range combat, where first detection is often decisive, but rules of engagement and missed shots keep the dogfight relevant. Missiles use radar or infrared guidance, countered by chaff and flares in an ongoing technological duel.
7. Legendary Aircraft on the RecordExamine documented record-setting aircraft like the SR-71 and MiG-25 and what their design choices reveal.The SR-71 Blackbird remains the fastest air-breathing crewed aircraft in service, built of titanium to survive Mach 3 heat. The MiG-25, revealed by Belenko's 1976 defection, proved to be a heavy high-speed interceptor rather than an agile fighter. These legends show that every aircraft embodies trade-offs among speed, range, cost, and detectability.

Questions this course answers

Grounded in trusted sources

• Smithsonian National Air and Space Museum
• NASA
• Imperial War Museum
• US Air Force

Every Wunder lesson is built from real, reputable sources — never invented.

Related Technology courses