Results 61 to 70 of about 886 (110)

NASA Thesaurus Supplement: A three part cumulative supplement to the 1982 edition of the NASA Thesaurus (supplement 3) [PDF]

open access: yes
The three part cumulative NASA Thesaurus Supplement to the 1982 edition of the NASA Thesaurus includes Part 1, Hierarchical Listing, Part 2, Access Vocabulary, and Part 3, Deletions.

core   +1 more source

Safety Considerations for Operation of Unmanned Aerial Vehicles in the National Airspace System [PDF]

open access: yes, 2006
There is currently a broad effort underway in the United States and internationally by several organizations to craft regulations enabling the safe operation of UAVs in the NAS. Current federal regulations governing unmanned aircraft are limited in scope,
Hansman, R. John, Weibel, Roland E
core  

Norepinephrine regulates calcium signals and fate of oligodendrocyte precursor cells in the mouse cerebral cortex. [PDF]

open access: yesNat Commun, 2023
Fiore F   +6 more
europepmc   +1 more source

A review of variable-pitch propellers and their control strategies in aerospace systems

open access: yes, 2023
The relentless pursuit of aircraft flight efficiency has thrust variable-pitch propeller technology into the forefront of aviation innovation. This technology, rooted in the ancient power unit of propellers, has found renewed significance, particularly ...
Ho, Hann Woei, Jiang, Hanjie, Zhou, Ye
core  

Community rotorcraft air transportation benefits and opportunities [PDF]

open access: yes
Information about rotorcraft that will assist community planners in assessing and planning for the use of rotorcraft transportation in their communities is provided.
Cafarelli, N. J.   +5 more
core   +1 more source

APACHE: Integrated Hybrid Fuel Cell System for 2-Seat All Electric Aircraft Propulsion

open access: yes, 2012
International audienceThe French APACHE project aims at demonstrating the feasibility of using a Hybrid Fuel Cell System (HFCS) as the power generator for all electric 2-seat aircrafts.
Achard, Patrick   +2 more
core   +1 more source

Autogyro C-30 Fuselage Finite Element Model Analysis [PDF]

open access: yes, 2019
The main objective of this paper is to design and analyze the autogyro C-30 fuse- lage structure. The autogyro, considered as a hybrid between an airplane and a helicopter, is one the most important milestone in aircraft aviation.
Labiano Laserna, Enrique
core  

Compound cycle engine for helicopter application [PDF]

open access: yes
The compound cycle engine (CCE) is a highly turbocharged, power-compounded, ultra-high-power-density, lightweight diesel engine. The turbomachinery is similar to a moderate-pressure-ratio, free-power-turbine gas turbine engine and the diesel core is high
Bradley, Curtiss   +2 more
core   +1 more source

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