The word helipad is a blend meaning helicopter landing pad, a landing area for helicopters. In Linguistics, a blend is a word formed from parts of two other words History Since 400 AD Chinese children have played with bamboo flying toys. Though helicopters can usually land anywhere flat, a fabricated helipad provides a clearly marked hard surface away from obstacles where a helicopter can land. Helipads are usually constructed out of concrete and are marked with a circle and/or a letter "H", so as to be visible from the air. They may be located at a heliport or airport where fuel, air traffic control, and service facilities for aircraft are available. A heliport is a small Airport suitable only for use by Helicopters Heliports typically contain one or more Helipads and may have limited facilities such An airport is a location where Aircraft such as airplanes, Helicopters and blimps take off and land Air traffic control ( ATC) is a service provided by ground-based controllers who direct Aircraft on the ground and in the air Usually a helipad does not have fuel and service facilities for aircraft, as does a heliport, and does not maintain a full time air traffic controller. Conversely, a helipad may also be located away from such facilities; for example, helipads are commonly placed on the roof of hospitals to facilitate MEDEVACs. A hospital is an institution for Health care providing treatment by specialised staff and equipment and often but not always providing for Medical evacuation, often termed MEDEVAC or medivac, is the timely and efficient movement and en route care provided by medical personnel to the wounded being Large ships sometimes have a helipad onboard, and some businesses maintain a helipad on the roof of their office tower. A ship /ʃɪp/ is a large vessel that floats on water Ships are generally distinguished from Boats based on size A skyscraper is a tall continuously habitable Building. There is no official definition or a precise cutoff height above which a building may clearly be classified as a skyscraper Helipads are not always constructed out of concrete; sometimes forest fire fighters will construct a temporary helipad out of wood to receive supplies in remote areas. A wildfire, also known as a wildland fire, forest fire, brush fire, vegetation fire, grass fire, Peat fire, Landing pads may also be constructed in extreme conditions like on frozen ice. The world's highest helipad, built by India, is located in the Siachen Glacier at a height of 21,000 feet above the sea level. India, officially the Republic of India (भारत गणराज्य inc-Latn Bhārat Gaṇarājya; see also other Indian languages) is a country see Siachen conflict for the military conflict over this area The Siachen Glacier is located in the eastern Karakoram range in the Himalaya
Rooftop helipads sometimes display a large two-digit number, representing the weight limit (in thousands of pounds) of the pad.
Retractable helipad systems are another type of landing surface that respond to a major problem in the helicopter travel sector. Retractable or foldable landing pads can be integrated into extremely difficult to access areas and offer landing points not previously possible in this industry. They can also be incorporated into traditional environments, but main uses of this system are on yachts, hillsides, mountains, and buildings. The following images illustrate the possibilities offered by these systems.
Source Retractable Helipads
Headland Retractable Landing Surfaces for Helicopters
See also
A heliport is a small Airport suitable only for use by Helicopters Heliports typically contain one or more Helipads and may have limited facilities suchDapyx Software network: MP3 Explorer | Ebook Manager | Zenithic