Results 171 to 180 of about 4,997,471 (331)

Planning fuel-conservative descents in an airline environmental using a small programmable calculator: Algorithm development and flight test results [PDF]

open access: yes
A simple, airborne, flight-management descent algorithm was developed and programmed into a small programmable calculator. The algorithm may be operated in either a time mode or speed mode.
Knox, C. E.   +2 more
core   +1 more source

Feline‐Inspired Robot Enabled by Combustion‐Driven Actuators for Agile Motion and High‐Payload Obstacle Traversal

open access: yesAdvanced Science, EarlyView.
Inspired by nature's competitive maneuvers, this study introduces a combustion‐driven soft actuator that powers a multi‐modal “Jump‐and‐Fly Catbot” (JFC). With millisecond response, high‐force output (over 70 times its weight) and precise control (error within 5%), the robot can jump, fly, hover, and escape from challenging environments, achieving ...
Hongkuan Ma   +4 more
wiley   +1 more source

A knowledge-based expert system for scheduling of airborne astronomical observations [PDF]

open access: yes
The Kuiper Airborne Observatory Scheduler (KAOS) is a knowledge-based expert system developed at NASA Ames Research Center to assist in route planning of a C-141 flying astronomical observatory.
Banda, C. P.   +3 more
core   +1 more source

Gravity‐Tolerant In‐Flight 3D Bioprinting Enabled by Stereolithography for Space Tissue Engineering

open access: yesAdvanced Science, EarlyView.
A flight‐compliant, closed stereolithographic 3D bioprinting system enables robust fabrication of acellular and cell‐laden hydrogel constructs under varying gravitational conditions, including microgravity and hypergravity phases. Printed structures retain dimensional fidelity and high‐resolution features, while cell viability remains high ...
Bianca Lemke   +8 more
wiley   +1 more source

STS-3 medical report [PDF]

open access: yes
The medical operations report for STS-3, which includes a review of the health of the crew before, during, and immediately after the third Shuttle orbital flight is presented.
Johnson, P. C., Jr.   +2 more
core   +1 more source

Integrated Ultrasound Device for Precision Bladder Volume Monitoring via Acoustic Focusing and Machine Learning

open access: yesAdvanced Science, EarlyView.
We present a conformable wearable ultrasound patch for noninvasive bladder volume monitoring. A flexible PZT array combined with a concave acoustic lens concentrates acoustic energy and improves depth selectivity through the anterior pelvic wall.
Long Long Cao   +4 more
wiley   +1 more source

Optimising drone flight planning for measuring horticultural tree crop structure

open access: yes, 2020
Yu-Hsuan Tu   +4 more
semanticscholar   +1 more source

Technology review of flight crucial flight controls [PDF]

open access: yes
The results of a technology survey in flight crucial flight controls conducted as a data base for planning future research and technology programs are provided.
Buckley, E. C., Rediess, H. A.
core   +1 more source

Electron‐Phonon Interactions Facilitating Large Polaron‐Related Charge‐Carrier Dynamics for Efficient Perovskite Nanocrystal Solar Cells

open access: yesAdvanced Science, EarlyView.
We developed a custom‐synthesized ligand, 2‐thiophenepropenammonium iodide, to exchange the native ligands capped on inorganic perovskite nanocrystals (NCs), and identified that the significantly decreased strength of electron‐phonon interaction benefited the charge‐carrier dynamics in their assembled films.
Wei Guo   +12 more
wiley   +1 more source

Simplified Flight Planning [PDF]

open access: yesJournal of Navigation, 1952
openaire   +1 more source

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