Results 101 to 110 of about 147,710 (303)
Motion-base simulator study of control of an externally blown flap STOL transport aircraft after failure of an outboard engine during landing approach [PDF]
A moving-base simulator investigation of the problems of recovery and landing of a STOL aircraft after failure of an outboard engine during final approach was made. The approaches were made at 75 knots along a 6 deg glide slope.
Bergeron, H. P. +5 more
core +1 more source
Summary of all cycle II.5 shear and boundary layer measurements, aerodynamics [PDF]
, 1980 The two measurement systems were used to measure mean velocity and velocity, mass flux, and total temperature fluctuations in the turbulent boundary on the fuselage of a KC-135 aircraft.
Johnson, D. A. +2 more
core +1 more source
HyLPD Digital Twin Control for UAV Stability in High‐Wind Conditions
Optimal Control Applications and Methods, EarlyView.This work introduces a novel HyLPD, a hybrid control framework combining Linear Quadratic Regulator (LQR) for baseline stability and Deep Deterministic Policy Gradient (DDPG) for adaptive compensation, tailored for UAVs under high‐wind conditions.
Cara Rose +2 more
wiley +1 more source
Investigation of Air Transportation Technology at Princeton University, 1989-1990 [PDF]
, 1990 The Air Transportation Technology Program at Princeton University proceeded along six avenues during the past year: microburst hazards to aircraft; machine-intelligent, fault tolerant flight control; computer aided heuristics for piloted flight ...
Stengel, Robert F.
core +1 more source
Impact and Post‐Impact Properties of Carbon Fiber Fabric Laminates Reinforced With Carbon Nanofibres
Polymer Composites, EarlyView.Carbon nanofiber addition on the low‐velocity impact response of carbon fiber laminates. ABSTRACT The use of carbon fiber reinforced polymers (CFRPs) is limited by their susceptibility to low‐velocity impact (LVI) damage. This study investigates the effect of incorporating 0.75 wt.% carbon nanofibres (CNFs) into the epoxy matrix of carbon fiber fabric ...
Paulo Santos +2 more
wiley +1 more source
UAS Concept of Operations and Vehicle Technologies Demonstration [PDF]
In 2017 and 2018, under National Aeronautics and Space Administration (NASA) sponsorship, the New York Unmanned Aircraft Systems (UAS) Test Site and Northeast UAS Airspace Integration Research (NUAIR) Alliance conducted a year-long research project that ...
Hague, Mike +3 more
core +1 more source
Coupled evolution of BrOx-ClOx-HOx-NOx chemistry during bromine-catalyzed ozone depletion events in the arctic boundary layer [PDF]
, 2003 Extensive chemical characterization of ozone (O3) depletion events in the Arctic boundary layer during the TOPSE aircraft mission in March-May 2000 enables analysis of the coupled chemical evolution of bromine (BrOx), chlorine (ClOx), hydrogen oxide (HOx)
Atlas, E +16 more
core +1 more source
Polymer Composites, EarlyView.Influence of consolidation time on interlaminar shear strength and void content after hot press consolidation and vacuum bag only processes. ABSTRACT Processing long fiber reinforced thermoplastic composites such as polyaryletherketones with carbon fibers (CF/PEEK) has found interest in the aerospace industry due to short‐time manufacturing and ...
Adrian Korycki +4 more
wiley +1 more source
Unconventional Mining of End-of-Life Aircrafts: A Systematic Review
RecyclingAdvancements in material science have allowed us to exploit the potential of new era for aircraft production. High-performance composites and alloys have allowed us to improve the performance and durability of aircraft, but they have become more and more
Silvia Zecchi +4 more
doaj +1 more source
Risk Times in Mission‐Oriented Systems
Quality and Reliability Engineering International, EarlyView.ABSTRACT This article assesses risk times in mission‐oriented systems with high safety standards. We examine critical times under two safety policies. The first requires that the system's reliability function, known the first failure of the components, must exceed a reliability level throughout the mission.
Antonio Arriaza +2 more
wiley +1 more source