Helicopters

A helicopter is a type of rotorcraft in which lift and thrust are supplied by horizontally-spinning rotors. This allows the helicopter to take off and land vertically, to hover, and to fly forward, backward and laterally. These attributes allow helicopters to be used in congested or isolated areas where fixed-wing aircraft and many forms of VTOL (Vertical TakeOff and Landing) aircraft cannot perform. The English word helicopter is adapted from the French word hélicoptère, coined by Gustave Ponton d'Amécourt in 1861, which originates from the Greek helix (ἕλιξ) "helix, spiral, whirl, convolution" and pteron (πτερόν) "wing". English language nicknames for …

Wikipedia

Publications

RAND Corporation · 21 March 2024 English

Testimony presented before the U.S.-China Economic and Security Review Commission on March 21, 2024.

military transport aircraft and air assault helicopters would airdrop assault forces to secure beachheads and Stinger missiles to shoot down Chinese helicopters.48 Close Terminating hostilities in a conflict


DPG: Delhi Policy Group · 19 March 2024 English

DPG is deeply committed to the growth of India’s national power and purpose, the security and prosperity of the people of India and India’s contributions to the global public good. …

and induction of Tomahawk missiles. Shipborne helicopters will also be from the US (Australia already operates


Pacific Forum · 16 March 2024 English

BY SAURABH SINGH The bilateral relationship between the Philippines Saurabh Singh (iambivert07@gmail.com) is a and the US has improved since the finalization of the Doctoral Candidate at HNB Garhwal University …

frigates, and complex landscape requires nuance. helicopters. Defense ties between India and Indonesia also


ORF: Observer Research Foundation · 15 March 2024 English

Background India-US defence cooperation began during the 1962 Sino-Indian War, when the US supplied India with transport aircraft, weapons, and training. The two sides and the UK also conducted air …

ships along with maritime patrol aircraft, helicopters, and submarines. A US nuclear-powered aircraft dock, along with six Sikorsky S-61 Seaking helicopters and six C 130J transport aircraft for use during decided to purchase next- generation attack helicopters. The US Defense Department made an advance notification the possible sale of 22 AH-64D Apache attack helicopters in a package worth US$1.4 billion for the Indian India decided to buy 24 MH-60R multi-mission helicopters with associated multi- mode radars, radio equipment


NBER: National Bureau of Economic Research · 14 March 2024 English

We document a sharp rise in gunshots coupled with declining 911 call volume across thirteen major US cities in the aftermath of the murder of George Floyd. National survey data …

false positives, mis-classifying car backfires, helicopters, and fireworks as gunshots (Carr & Doleac, 2016)


SWP: Stiftung Wissenschaft und Politik · 14 March 2024 English

Beginning at the border of the Sahara, they have spread across the central part of Sahel and onwards to the northern regions of several countries of the Gulf of Guinea, …

material, including drones, armoured vehicles and helicopters.18 Other measures include initiatives aimed at by Paris. Of an order placed in 2016 for five helicopters from French army surplus, only three were delivered


ELIAMEP: Hellenic Foundation For European and Foreign Policy · 13 March 2024 English

By primarily highlighting the consequences of France’s engagement in the Sahel along with EU involvement, the paper underlines the dangers of the destabilization of the Sahel spilling over into the …

policy in Sub-Saharan Africa planes, combat helicopters, and mobile radar systems. As a result, Moscow's


RAND Corporation · 13 March 2024 English

Drones represent a serious emerging threat to the safety and security of U.S. correctional institutions. Conspirators are using drones to introduce large amounts of contraband, such as drugs and cell …

person, and drones could be used instead of helicopters to facilitate escape via air (Office of the


World Bank Group · 13 March 2024 English

South Africa after servic e contract of the Helicopters is completed. IDA / 66510 Surveillance and Control


IAI: Istituto Affari Internazionali · 13 March 2024 English

Rome, IAI, March 2024, 11 p. (Documenti IAI ; 24|03)

and Giancarlo La Rocca (eds), Future Military Helicopters: Technological Innovation and Lessons Learned


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