Results 111 to 120 of about 179,532 (301)

Refan program. Phase 1: Summary report [PDF]

The Refan Program is aimed at a large reduction in aircraft approach and takeoff noise in the vicinity of airports caused by the JT3D-powered 707's and DC-8's and the JT8D-powered 727's, 737's and DC-9's.
Bresnahan, D. L., Sams, E. W.
core   +1 more source

Resource reallocation across successive systemic innovations: How Rolls‐Royce shaped the evolution of the turbojet, turboprop, and turbofan

Strategic Management Journal, EarlyView.
Abstract Research Summary Despite the importance of resource reallocation in shaping a variety of strategic outcomes, strategy scholars have paid only limited attention to the processes by which firms reallocate their resources across successive systemic innovations.
Gino Cattani, Mariano Mastrogiorgio, Giuseppe Carignani   +2 more
wiley   +1 more source

Alternative climate metrics to the Global Warming Potential are more suitable for assessing aviation non-CO2 effects

Communications Earth & Environment
A growing body of research has highlighted the major contribution of aviation non-CO2 emissions and effects to anthropogenic climate change. Regulation of these emissions, for example in the EU Emissions Trading System, requires the use of a climate ...
Liam Megill, Kathrin Deck, Volker Grewe
doaj   +1 more source

Cardiovascular consequences of aircraft noise exposure. [PDF]

Front Public Health, 2022
Ba̧czalska J, Wojciechowska W, Rojek M, Hahad O, Daiber A, Münzel T, Rajzer M.   +6 more
europepmc   +1 more source

Predicted airframe noise levels [PDF]

Calculated values of airframe noise levels corresponding to FAA noise certification conditions for six aircraft are presented. The aircraft are: DC-9-30; Boeing 727-200; A300-B2 Airbus; Lockheed L-1011; DC-10-10; and Boeing 747-200B.
Raney, J. P.
core   +1 more source

Sources, control, and effects of noise from aircraft propellers and rotors [PDF]

, 1981
Source noise predictions are compared with measurements for conventional low-speed propellers, for new high speed propellers (propfans), and for a helicopter.
Dempsey, T. K., Greene, G. C., Mixson, J. S.   +2 more
core   +2 more sources

Task co‐use and product improvement: An organization design perspective

Strategic Management Journal, EarlyView.
Abstract Research Summary Co‐using tasks—using the same task to produce more than one product—promises economies of scope. However, task co‐use also ties products together, changing a firm's task network by introducing cross‐product interdependencies. In light of these interdependencies, we identify an unrecognized downside of task co‐use for product ...
Johanna Glauber, Tobias Kretschmer
wiley   +1 more source

Turboprop cargo aircraft systems study [PDF]

The effects of using advanced turboprop propulsion systems to reduce the fuel consumption and direct operating costs of cargo aircraft were studied, and the impact of these systems on aircraft noise and noise prints around a terminal area was determined.
Hewell, J. G., Jr., Lindenbaum, S. P., Muehlbauer, J. C., Randall, C. C., Searle, N., Stone, R. G., Jr.   +5 more
core   +1 more source

Quantifying Structural Complexity, Effort, and Performance: An Early Experiment Using Network Design Tasks

Systems Engineering, EarlyView.
ABSTRACT Structural Complexity is perceived as driving cost in system development, yet managing it effectively requires empirical understanding. This study investigates human decision‐making using a toy transportation‐style network design task, focusing on how Structural Complexity, Effort, and Performance interact. Seventy‐four participants (primarily
Alfonso Lanza, Joshua Sutherland, Marc‐Andre Chavy‐Macdonald, Olivier L. de Weck   +3 more
wiley   +1 more source

Effects of Aircraft Noise on Sleep: Federal Aviation Administration National Sleep Study Protocol. [PDF]

Int J Environ Res Public Health, 2023
Basner M, Barnett I, Carlin M, Choi GH, Czech JJ, Ecker AJ, Gilad Y, Godwin T, Jodts E, Jones CW, Kaizi-Lutu M, Kali J, Opsomer JD, Park-Chavar S, Smith MG, Schneller V, Song N, Shaw PA.   +17 more
europepmc   +1 more source