Results 41 to 50 of about 6,275 (223)
A summary of rotorcraft handling qualities research at NASA Ames Research Center [PDF]
, 1984 The objectives of the rotorcraft handling qualities research program at Ames Research Center are twofold: (1) to develop basic handling qualities design criteria to permit cost effective design decisions to be made for helicopters, and (2) to obtain ...
Chen, R. T.
core +1 more source
Fatigue Crack Nucleation and Growth in Recrystallized Annealed Ti‐6Al‐4V Combat Aircraft Structures
Fatigue &Fracture of Engineering Materials &Structures, Volume 49, Issue 4, Page 1460-1471, April 2026.ABSTRACT In the Swiss Air Force (SAF) F/A‐18C/D Hornet fleet, recrystallized annealed Ti‐6Al‐4V was selected for the wing carry through bulkheads to meet their demanding operational usage profile requirements that included increased airframe strength and toughness.
I. Field +5 more
wiley +1 more source
Advanced Energy and Sustainability Research, Volume 7, Issue 3, March 2026.Hydrogen‐powered aviation offers a transformative pathway to zero‐emission flight by eliminating in‐flight CO2 emissions. Key considerations include propulsion systems (fuel cells and hydrogen combustion), cryogenic storage and insulation challenges, infrastructure and cost barriers, and supply‐chain constraints.
Mubasshira +4 more
wiley +1 more source
Mechanical performance of composite bonded joints in the presence of localised process-induced zero-thickness defects [PDF]
, 2018 Processing parameters and environmental conditions can introduce variation into the performance of adhesively bonded joints. The effect of such variation on the mechanical performance of the joints is not well understood.
Addepalli, S. +4 more
core +2 more sources
Optimization in Conceptual Design of a BWB UAV Using an Adaptive Kriging‐Based Surrogate Model
Engineering Reports, Volume 8, Issue 2, February 2026.An adaptive Kriging‐based framework for Blended Wing Body UAV optimization is presented. The exploitation‐oriented strategy yields a 14.5% range improvement, while sensitivity analysis identifies fuel mass as the dominant parameter for efficient conceptual design. ABSTRACT To improve optimization efficiency in the conceptual design of Blended Wing Body
Xinshi Suo +3 more
wiley +1 more source
Journal of Critical Infrastructure Policy, Volume 7, Issue 1, Spring/Summer 2026.ABSTRACT The infiltration of counterfeit, fraudulent, and suspect items into civil nuclear supply chains, notably within power generation and medical isotope production, poses severe safety and security threats. The ever‐increasing growth in nuclear installations (70 power plants are under construction and another 100 are in the planning stage) and the
Hafiz Ahmed
wiley +1 more source
Airworthiness study on civil aircraft engine operating characteristics
Hangkong gongcheng jinzhanEngine operating characteristics of civil aircraft engines are one of the most basic and complex verification subjects in the airworthiness certification process of the Part 25 "airworthiness standard for transport aircraft" of China civil aviation ...
DENG Tianze +4 more
doaj +1 more source
Analysis of the Relationship between CCAR-25 and CCAR-33 Airworthiness
Hangkong gongcheng jinzhan, 2018 The research on the relationship between the terms of airworthiness of transport category aircraft and aeroengine is of great importance to the swift development of airworthiness certification of China.
Han Bingbing +3 more
doaj +1 more source
A Novel Semantic Cohesion Approach for Chinese Airworthiness Regulations: Theory and Application
IEEE Access, 2020 Airworthiness regulation documents are critical, which contain massive safe constraints for system design and airworthiness certification. The textual information of airworthiness regulations is organized and stored in a hierarchical and scattered form ...
Haotian Niu +4 more
doaj +1 more source
Space Weather and Low‐Altitude Drone Economy
Space Weather, Volume 24, Issue 1, January 2026.Abstract Unmanned Aerial Vehicles (UAVs) are becoming integral to the emerging low‐altitude economy, operating primarily below 3,000 m for applications such as logistics, inspection, precision agriculture, and urban air mobility. The safe and reliable operation of UAVs depends critically on communication, navigation, and surveillance (CNS) systems ...
Dabin Xue +3 more
wiley +1 more source