Results 51 to 60 of about 111,602 (208)

Noise Prediction and Mitigation for UAS and eVTOL Aircraft: A Survey

Drones
The integration of small unmanned aircraft systems (sUASs) and electric vertical takeoff and landing (eVTOL) aircraft into urban airspace presents a new challenge in managing environmental noise, which is a critical factor for the public acceptance of ...
Waleed Raza, Richard S. Stansbury
doaj   +1 more source

Computer program to predict noise of general aviation aircraft: User's guide [PDF]

Program NOISE predicts General Aviation Aircraft far-field noise levels at FAA FAR Part 36 certification conditions. It will also predict near-field and cabin noise levels for turboprop aircraft and static engine component far-field noise ...
Barton, C. K., Kisner, L. S., Lyon, C. A., Mitchell, J. A.   +3 more
core   +1 more source

Quantumness certification via non-demolition measurements

Advances in Physics: X
The fundamental question of when a static or dynamic system should be deemed intrinsically quantum remains a challenge to address in absolute terms.
Paolo Solinas, Stefano Gherardini
doaj   +1 more source

Civil helicopter noise assessment study Boeing-Vertol model 347 [PDF]

A study was conducted to forecast the noise restrictions which may be imposed on civil transport helicopters in the 1975-1985 time period. Certification and community acceptance criteria were predicted. A 50 passenger tandem rotor helicopter based on the
Hinterkeuser, E. G., Sternfeld, H., Jr.
core   +1 more source

Demonstration of rapid and sensitive module leak certification for Space Station Freedom [PDF]

, 1991
A leak detection and quantification demonstration using perflurocarbon tracer (PFT) technology was successfully performed at the NASA Marshall Space Flight Center on January 25, 1991.
Dietz, R. N., Goodrich, R. W.
core   +2 more sources

Noise pollution from Arctic expedition cruise vessels: understanding causes, consequences and governance options

npj Ocean Sustainability
Significant increase in shipping in the Arctic has caught international and national attention. The rising presence of touristic expedition cruise vessels might describe a special case for noise as a marine pollutant while they seek exclusive ...
Fabienne Mannherz, Maaike Knol-Kauffman, Vonintsoa Rafaly, Heidi Ahonen, Bjørn Ivar Kruke   +4 more
doaj   +1 more source

The Role of Building-Integrated Greenery Systems in Building Sustainability Rating Systems

Land
Building rating systems allow for the evaluation of environmental buildings’ impact throughout their lifecycle, thereby enabling improved design. The integration of vegetation into building envelopes, through green roofs and facades, provides multiple ...
Marcelo Reyes, Gabriel Pérez, Julià Coma   +2 more
doaj   +1 more source

Helicopter noise regulations: An industry perspective [PDF]

A review of helicopter noise measurement programs and noise reduction/economic studies of FAA is given along with a critique of a study which addresses the economic impact of noise reduction on helicopter noise.
Wagner, R. A.
core   +1 more source

Test protocol for radiated emissions in medical electrical equipment: case study of telemedicine equipment

Revista Facultad de Ingeniería Universidad de Antioquia, 2013
This protocol was carried out with the purpose of having a methodology for the certification of electromagnetic compatibility of medical electrical equipment, in relation to radiated emissions, in accordance with the provisions of the IEC 60601-1-2 and ...
Antonio José Salazar Gómez, Diana Katherine Cuervo Ramírez   +1 more
doaj   +1 more source

Methodic recommendations for measuring underwater noise of research and commercial vessels

Известия ТИНРО
Recommendations for measuring underwater noise from vessels intended for fisheries researches and monitoring of bioresources are compiled based on current technical regulations and standards.
M. Yu. Kuznetsov, V. I. Polyanichko, I. A. Ubarchuk, V. I. Shevtsov   +3 more
doaj   +1 more source