USS North Carolina (BB-55) | |
|---|---|
| Land | Usa |
| Klass | Slagskepp av North Carolina-klass |
| Lanserade | 13 juni 1940 |
| Avvecklas | 27 juni 1947 |
USS North Carolina BB-55 är det ledande fartyget i North Carolina-klassens slagskepp och det fjärde örlogsfartyget i den amerikanska flottan som namnges efter delstaten North Carolina. Det var det första nykonstruerade amerikanska slagskeppet som togs i tjänst under andra världskriget och deltog i varje större marinoffensiv i Stillahavsområdet. Dess 15 battle stars gjorde henne till det mest dekorerade amerikanska slagskeppet under andra världskriget.
Källkod: USS North Carolina på Wikipedia
| USS North Carolina BB-55 Walk Around | |
|---|---|
| Photographer | Vladimir Yakubov |
| Localisation | Wilmington, NC |
| Photos | 517 |
Se även:
General Characteristics and Role
The Boeing X-36 Tailless Fighter Agility Research Aircraft was an experimental subscale jet developed by McDonnell Douglas (later Boeing) for NASA and the US Air Force in the mid-1990s. Its primary role was to test the feasibility of a fighter aircraft design that lacked the traditional vertical and horizontal tail surfaces. The X-36 was intended to explore how a tailless configuration could enhance stealth (by reducing radar cross-section) and improve maneuverability, particularly at high angles of attack, compared to conventional fighter jets. It was flown remotely by a pilot in a ground station due to its small size and lack of a cockpit.
| Property | Typical Value (X-36) |
|---|---|
| Roll | Experimental Aircraft (Agility and Stealth Research) |
| National Origin | USA |
| Tillverkare | McDonnell Douglas / Boeing |
| First Flight | 17 May 1996 |
| Pilot/Control | Unmanned, remotely controlled from a ground cockpit. |
| längd | 5.77 m (18 ft 11 in) |
| Spännvidd | 3.17 m (10 ft 5 in) |
| höjd | 0.95 m (3 ft 1 in) |
| Max Takeoff Weight | 567 kg (1,250 lb) |
Powerplant and Flight Controls
- Engine: 1 x Williams International F112 turbofan engine.
- Thrust: Approx. 3.1 kN (700 lbf).
- Top Speed: Estimated at 370 km/h (230 mph).
- Flight Control System: Required a highly advanced Digital Fly-By-Wire (DFBW) system to maintain stability, as the aircraft was inherently unstable without tail surfaces.
- Control Surfaces: Yaw and pitch control were achieved using canards (foreplanes) and a combination of split ailerons (flaperons) and a **thrust-vectoring nozzle** on the engine.
Program Outcome and Legacy
- Test Program: The X-36 completed a highly successful test program, demonstrating excellent maneuverability with its tailless design. It achieved a total of 31 flights, logging 15 hours of air time.
- Success Metric: The program demonstrated that a tailless fighter design could achieve up to a 40% increase in cruising lift and a significant improvement in agility over conventional designs.
- Influence: Although the X-36 never led directly to a production aircraft, its successful demonstration of control and stability heavily influenced subsequent low-observable (stealth) aircraft design and DFBW control systems, including possible future unmanned combat air vehicles (UCAVs).
- Preservation: Both X-36 prototypes are now preserved: one is at the National Museum of the United States Air Force in Ohio, and the other is at the NASA Dryden Flight Research Center (now Armstrong) in California.
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