Results 111 to 120 of about 6,275 (223)

NASA's UAS NAS Access Project [PDF]

, 2012
Contribution by NASA DFRC to this year's edition of the UAS ...
Johnson, Chuck
core   +1 more source

Non-Destructive Evaluation—A Pivotal Technology for Qualification of Composite Aircraft Structures [PDF]

, 2009
Tremendous advances in composite materials and a deeper understanding of their behavior have been responsible for the increased use of composites in the development of advanced, new generation civil and military aircraft.
Madhava, MR, Ramesh Kumar, M, Sanjeev Kumar, S, Srinivasa, V, Sudheendra, HN   +4 more
core  

Research on Quantitative Modeling of Impractical Issues of the Changed Product Rule in the Certification for Civil Aviation Products

Aerospace
In response to the complexity and uncertainty in assessing the safety and economic impacts of the Changed Product Rule (CPR) in civil aviation products’ airworthiness certification, this paper constructs a comprehensive evaluation model based on a cost ...
Honglin Li, Peng Ke, Yukai Zhou
doaj   +1 more source

Structural Analysis and Performance-Based Validation of a Composite Wing Spar [PDF]

Electric-motor powered aircraft possess the ability to operate with efficient energy delivery, but lack the operational range of internal combustion engine powered aircraft. This range limitation requires the use of high aspect ratio, thin-chord wings to
Cutright, Stephen E., Moore, James B.
core   +1 more source

Full-Scale Test and Analysis of a PRSEUS Fuselage Panel to Assess Damage-Containment Features [PDF]

, 2011
Stitched composite technology has the potential to substantially decrease structural weight through enhanced damage containment capabilities. The most recent generation of stitched composite technology, the Pultruded Rod Stitched Efficient Unitized ...
Awerbuch, Jonathan, Bakuckas, John G., Bergan, Andrew, Jegley, Dawn C., Korkosz, Gregory, Linton, Kim A., Lovejoy, Andrew E., Tan, Tein-Min   +7 more
core   +1 more source

The Basic Premises of EU Regulations Regarding the Safety of Unmanned Aircraft in the Context of their Development Process. [PDF]

J Intell Robot Syst, 2022
Kasprzyk P.
europepmc   +1 more source

Assessment of the Feasibility of an Extended Range Helicopter Operational Standard for Offshore Flights [PDF]

, 2018
The accident rate of rotorcraft has improved signi1cantly over the years but at a slow pace, and in any case the number of accidents per 2ight hours is one or two orders of magnitude higher than that of commercial aircraft, a consideration that could ...
Barakos, George, Ezgi, Akel, Fasiello, Simone, Friesen, Daniel, Ghiasvand, Sara, Huercas, Sergio, Masarati, Pierangelo, Morelli, Myles, Nabi, Hafiz Noor, Pavel, Marilena, Quaranta, Giuseppe, Scaramuzzino, Paolo Francesco, Taymourtash, Neda, White, Mark, Ying, Yu   +14 more
core  

Zero/zero rotorcraft certification issues. Volume 1: Executive summary [PDF]

This report analyzes the Zero/Zero Rotorcraft Certification Issues from the perspectives of manufacturers, operators, researchers and the FAA. The basic premise behind this analysis is the zero/zero, or at least extremely low visibility, rotorcraft ...
Adams, Richard J.
core   +1 more source

Certification [PDF]

Objective 1: Provide regulators with a methodology for development of airworthiness requirements for certification of UAS. a) Rationale: a comprehensive methodology does not currently exist to support development of regulation for certification of UAS ...
Hayhurst, Kelly
core   +1 more source

A Review of Current and Prospective Factors for Classification of Civil Unmanned Aircraft Systems [PDF]

While progress is being made on integrating unmanned aircraft systems (UAS) into our national airspace on a broad scale, much work remains to establish appropriate certification standards and operational procedures, particularly with respect to routine ...
Hayhurst, Kelly J., Maddalon, Jeffrey M., Morris, A. Terry, Neogi, Natasha, Verstynen, Harry A.   +4 more
core   +1 more source