USS North Carolina (BB-55)

USS North Carolina (BB-55)
Državi	Zda
Razred	Bojna ladja razreda Severna Karolina
Začela	13. junij 1940
Razgradnja	27. junij 1947

USS Severna Karolina (BB-55) je vodilna ladja bojnih ladij razreda Severna Karolina in četrta vojna ladja v ameriški mornarici, ki je bila poimenovana po državi Severna Karolina. To je bila prva na novo zgrajena ameriška bojna ladja, ki je vstopila v službo med drugo svetovno vojno in je sodelovala v vsaki večji pomorski ofenzivi na pacifiškem gledališču; Njenih 15 bojnih zvezd jo je naredilo najbolj odlikovano ameriško bojno ladjo druge svetovne vojne.

Vir: USS Severna Karolina na Wikipediji, prosta enciklopedija

USS North Carolina BB-55 Walk Around
Photographer	Vladimir Yakubov
Localisation	Wilmington, NC
Photos	517

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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)
Vlogo	Experimental Aircraft (Agility and Stealth Research)
National Origin	Združene države Amerike
proizvajalec	McDonnell Douglas / Boeing
First Flight	17 May 1996
Pilot/Control	Unmanned, remotely controlled from a ground cockpit.
Dolžina	5.77 m (18 ft 11 in)
Peruti	3.17 m (10 ft 5 in)
Višina	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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