Results 71 to 80 of about 223,735 (247)
Progress in Resource Evaluation Using a Handheld Raman Instrument Developed for Astronaut Missions
Journal of Raman Spectroscopy, EarlyView.Analogue studies were undertaken using a prototype, handheld Raman spectrometer (developed for astronaut usage on the moon) to collect data that would indicate the presence of water and help develop the technology to search for valuable trace elements (such as lithium and caesium).
J. G. T. Armstrong +5 more
wiley +1 more source
Aeroassisted-vehicle design studies for a manned Mars mission [PDF]
An aerobrake design that has matured over several years of development accounting for all of the important flow phenomenology which are characteristic of aerobraking vehicles is proposed as the mission baseline.
Menees, Gene P.
core +1 more source
Limnology and Oceanography, EarlyView.Abstract Both local and global climate phenomena shape the hydrologic regimes of watersheds. For aridland rivers in the southwestern United States, peak flows occur during two distinct periods: spring snowmelt and summer monsoons. Although discharge (Q) is a primary driver of variation in the production and consumption of instream organic matter, or ...
Betsy M. Summers +5 more
wiley +1 more source
International Journal of Mechanical System Dynamics, EarlyView.ABSTRACT Modern engineering systems require advanced uncertainty‐aware model updating methods that address parameter correlations beyond conventional interval analysis. This paper proposes a novel framework integrating Riemannian manifold theory with Gaussian Process Regression (GPR) for systems governed by Symmetric Positive‐Definite (SPD) matrix ...
Yanhe Tao +3 more
wiley +1 more source
The Center/TRACON Automation System (CTAS): A video presentation [PDF]
NASA Ames, working with the FAA, has developed a highly effective set of automation tools for aiding the air traffic controller in traffic management within the terminal area.
Freeman, Jeannine, Green, Steven M.
core +1 more source
Guidance and maneuver analyzer Patent [PDF]
, 1970 Guidance analyzer having suspended spacecraft simulating sphere for ...
Davids, L. H., Ribarich, J. J.
core +1 more source
International Journal of Mechanical System Dynamics, EarlyView.ABSTRACT Understanding the dynamic behavior of structural components is crucial for optimizing performance and ensuring structural integrity. This study presents a new method that combines a systematic experimental investigation of four distinct hole geometries (circular, square, compact rectangular, and long rectangular) with varying hole counts, all ...
Amir Hossein Rabiee +3 more
wiley +1 more source
Flight investigation of the VFR and IFR landing approach characteristics and terminal area airspace requirements for a light STOL airplane [PDF]
A flight research program was conducted to determine the terminal area instrument flight capabilities of a light STOL airplane. Simulated (hooded) instrument landing approaches were made using steep single-segment and two-segment glide slopes.
Crane, H. L. +2 more
core +1 more source
Integrated lift/drag controller for aircraft [PDF]
, 1974 A system for altering the lift/drag characteristics of powered aircraft to provide a safe means of glide path control includes a control device integrated for coordination action with the aircraft throttle.
Ellis, D. R., Olcott, J. W., Seckel, E.
core +1 more source
Nordic Journal of Botany, EarlyView.Dispersal units that continuously rotate while falling purely due to aerodynamic forces are called autorotating dispersal units. Single‐ to multi‐winged forms of autorotating dispersal units occur in nature. The dispersal unit of Getonia floribunda Roxb.
V. V. Drisya +3 more
wiley +1 more source