Árpád Bridge
Árpád Bridge or Árpád híd is a bridge in Budapest, Hungary, connecting northern Buda (Óbuda) and Pest across the Danube.
It is the longest bridge in Hungary, spanning about 2 km (1.24 mi) with the sections leading up to the bridge, and 928 m (0.58 mi) without them. It is 35.3 m (116 ft) wide with pedestrian and bicycle paths.
At its Óbuda end is Flórián tér, Szentlélek tér (near the Main Square of Óbuda, the Vasarely and Kassák Museums).
Margaret Island is connected to Árpád Bridge through an embranchment approximately in the middle of the bridge, and crosses the Southern tip of Óbuda Island as well, although there is no road, pedestrian or any other connection whatsoever between the two. (See Sziget Festival)
At the Pest end, the adjoining Line 3 (North-South) metro station is also called "Árpád híd".
Construction and expansion
The original bridge
Construction began in 1939 by the plans of János Kossalka. It was planned to be named "Árpád Bridge" after Grand Prince Árpád, the second Grand Prince of the Magyars.
Árpád
Árpád (Hungarian pronunciation: [ˈaːrpaːd]; c. 845 – c. 907) was the head of the confederation of the Hungarian tribes at the turn of the 9th and 10th centuries. He may have been either the sacred ruler or kende of the Hungarians, or their military leader or gyula, although most details of his life are debated by historians, because different sources contain contradictory information. Despite this, many Hungarians refer to him as the "founder of our country", and Árpád's preeminent role in the Hungarian conquest of the Carpathian Basin has been emphasized by some later chronicles. The dynasty descending from Árpád ruled the Kingdom of Hungary until 1301.
Biography
Early life
Árpád was the son of Álmos who is mentioned as the first head of the confederation of the Hungarian tribes by all Hungarian chronicles. His mother's name and family are unknown. According to historian Gyula Kristó, Árpád was born around 845. His name derived from the Hungarian word for barley (árpa).
Radioplane RP-77
The Radioplane RP-77 was a small target drone missile, constructed largely of plastic materials, produced by the Radioplane division of the Northrop Corporation. Although the RP-77D was successfully tested by the United States Army, the decision was made not to procure the aircraft.
Design and development
The development of the RP-77 began in 1955. Similar in outline to Radioplane's earlier OQ-19, four prototypes of the RP-77 were constructed, two each of the RP-77, powered by a four-cylinder McCulloch piston engine, and of the RP-77A, powered by a six-cylinder Lycoming engine. Results of flight-testing were insufficient to interest the U.S. Army, however in 1957 a proposal for an improved RP-77D, powered by a Boeing 502 turboprop, resulted in a contract for the construction of 20 aircraft.
The design of the RP-77D made extensive use of glass-polyester plastic materials. The drone was launched using a rocket-assisted take-off system consisting of four Loki rockets, and was fitted with a radio control apparatus that, with the assistance of radar tracking, allowed the drone to be operated at a considerable distance from its launching point. In addition to equipment typically carried by target drones, the RP-77D could be equipped with reconnaissance or meteorological sensors, or with air sampling equipment. The RP-77D utilised the RPTA tracking system, developed by Radioplane, using audio frequency tones for control. Tip tanks allowed for carriage of additional fuel to extend the aircraft's range, and recovery at the end of the flight was by parachute.
Arpad
Arpad or Árpád may refer to:
