Prohibited Preferred Acceptable Acceptable Acceptable Preferred Safety Around Helicopters ApproAching or leAving A helicopter tAkeoff, lAnding, And loAding operAtions Do not approach without receiving a visual signal from the pilot. Do not leave without a visual or spoken instruction to do so. Stay where the pilot can see you at all times. On sloping [...]

Information on Dr. Leishman’s Research Interests … J. Gordon Leishman Professor of Aerospace Engineering, University of Maryland, College Park
The idea of a vehicle that could lift itself vertically from the ground and hover motionless in the air was probably born at the same time that man first dreamed of flying.

The ability to take off and land vertically and to remain stationary above a fixed location has been a driving force in aircraft design since the birth of powered flight. The advent of the helicopter in the late 1940’s ushered in great utility that has benefited society ever since. Civilian helicopters are used [...]

DHi is presently supplying its AfterGlow Brand Emergency Egress Photoluminescent (PL) Lighting? Kits to the U.S. Army, Air Force, Navy and Marine Corps to improve tactical vehicle safety and the ability of personnel to quickly and safely egress vehicles in low-light situations. The U.S. Department of Defense (DoD) determined that vehicle exits and escape hatches [...]

This part of the CAR lays down the minimum operational, instruments and equipment requirements for Indian registered helicopters engaged in general aviation operations. This CAR is issued under the provision of Rule 29C of the Aircraft Rules 1937 and is in conformity with ICAO Annex 6 Part III. These requirements are applicable for helicopter operation [...]

HORSEHEADS, N.Y. , May 6 ,2009-Sikorsky Global Helicopters, a Sikorskycompany, recently delivered an S-300CBi?helicopter to Tomlinson Aviation of Ormond Beach, Fla. Sikorsky Aircraft Corp. is a subsidiary of United Technologies Corp. ( NYSE:UTX ). Tomlinson Aviation has been operating S-300 series helicopters since its founding in 1990 and has grown into adynamic, rapidly expanding flight [...]

THE YEAR ON YEAR INCREASE IN THE WATERLINE length of Superyachts has afforded designers, clients and builders the opportunity to build ever more imaginative and challenging vessels. Thus enabling the provision of ever more exotic tenders of which the helicopter is no longer a rarity, especially in explorer yachts and support vessels. Commensurate with the [...]

A helicopter is a type of aircraft that has rotary wings. The engine causes the long slender wings, called rotors, at the top of the helicopter to rotate, providing lift and allowing the helicopter to fly. Compared to aircraft with fixed wings, helicopters are slow and get poor mileage so they don’t fly long continuous [...]

Paul Cornu (1881-1944), a Frenchman from Lisieux, along with his father Julesandbrother Jacques, pioneered the development of three rotating-wing aircraft concepts from 1906to1908. Their work encompassed the develop- mentofflying models, attempts at flying a larger, piloted helicopter concept, and the design of ahybridorcon- vertiplane concept. Their aeronautical patents included a

Why, after decades of research, analysis, and experimentation, is helicopter performance still where it is? With this question, Dr. J. Gordon Leishmanopensan invigorating discussion of technical problems influencing the performance of the helicopter, and provides a unique perspective into future challenges and new opportunities in realizing its full performance. The [...]