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The XV-1 began tethered hovering flight tests on 11 February 1954, with test pilot John R. Noll. The tether had lead weights intended to keep the aircraft in ground effect until issues with the rotor's tip-jet propulsion system were solved. On 14 July 1954, the lead weights were removed and the XV-1 conducted its first free hovering flight. [1]
Webdriver Torso is a YouTube automated performance testing account that became famous in 2014 for speculations about its (then unexplained) nature and jokes featured in some of its videos. Created by Google on March 7, 2013, [1] the channel began uploading videos on September 23 of the same year, consisting of simple slides accompanied by beeps ...
The first XV-15 prototype aircraft, N702NA, was transferred back to Bell for company development and demonstration use. On 20 August 1992, the aircraft crashed while being flown by a guest test pilot. He was lifting off for a final hover when a bolt slipped out of the collective control system on one pylon, causing that rotor to go to full pitch.
XV-3 in forward flight Bell XV-3 in a hover, 1955. This was first version with 3-blade rotors and crashed. XV-3 test, in vertical flight with 2 blade rotors. In 1951, the Army and Air Force announced the Convertible Aircraft Program and released the Request for Proposals (RFP) to solicit designs from the aircraft industry.
The American Helicopter Society (AHS) International's Igor I. Sikorsky Human Powered Helicopter Competition was a competition to achieve the first human-powered helicopter flight to reach an altitude of 3 m (10 ft) during a flight lasting at least 60 seconds, while remaining within a 10 m (32.8 ft) x 10 m (32.8 ft) square, and complying with other competition requirements. [1]
In 2006, the research and development phase of the Korea Helicopter Project - Korea Utility Helicopter (KHP-KUH), costing around ₩1.3 trillion (equivalent to ₩1.67 trillion or US$1.48 billion in 2017) [6], was launched by the Agency for Defense Development. [7] [8] In 2012, full-scale production of the Surion began. KAI is the principal ...
The Robinson crash-landed into a stationary helicopter, sending the propellers into the other aircraft before they eventually spun off. The helicopter spun out of control on Sunday morning. Jam Press
Helicopter rotors are designed to operate at a specific rotational speed. The throttle controls the power of the engine, which is connected to the rotor by a transmission. The throttle setting must maintain enough engine power to keep the rotor speed within the limits where the rotor produces enough lift for flight.