ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    facet.materialart.
    Unknown
    Applying Required Navigation Performance Concept for Traffic Management of Small Unmanned Aircraft Systems (2016)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: In anticipation of a rapid increase in the number of civil Unmanned Aircraft System(UAS) operations, NASA is researching prototype technologies for a UAS Traffic Management (UTM) system that will investigate airspace integration requirements for enabling safe, efficient low-altitude operations. One aspect a UTM system must consider is the correlation between UAS operations (such as vehicles, operation areas and durations), UAS performance requirements, and the risk to people and property in the operational area. This paper investigates the potential application of the International Civil Aviation Organizations (ICAO) Required Navigation Performance (RNP) concept to relate operational risk with trajectory conformance requirements. The approach is to first define a method to quantify operational risk and then define the RNP level requirement as a function of the operational risk. Greater operational risk corresponds to more accurate RNP level, or smaller tolerable Total System Error (TSE). Data from 19 small UAS flights are used to develop and validate a formula that defines this relationship. An approach to assessing UAS-RNP conformance capability using vehicle modeling and wind field simulation is developed to investigate how this formula may be applied in a future UTM system. The results indicate the modeled vehicles flight path is robust to the simulated wind variation, and it can meet RNP level requirements calculated by the formula. The results also indicate how vehicle-modeling fidelity may be improved to adequately verify assessed RNP level.
    Keywords: Cybernetics, Artificial Intelligence and Robotics; Computer Programming and Software; Aircraft Communications and Navigation
    Type: ARC-E-DAA-TN34207 , ARC-E-DAA-TN25143 , ICAS 2016 Congress of the International Council of the Aeronautics Sciences; Sep 25, 2016 - Sep 30, 2016; Daejeon; Korea, Republic of
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 2
    facet.materialart.
    Unknown
    Key Lessons from Small UAS Operations and Performance Research and Future Work (2016)
    In:  CASI
    Details
    Publication Date: 2019-07-20
    Description: This presentation examines the UTMs second mantra, a risk-based approach where geographical needs and use cases determine the airspace performance requirements and draws lessons from geofence buffer sizing research and trajectory conformance requirement research.
    Keywords: Air Transportation and Safety
    Type: ARC-E-DAA-TN37145 , Unmanned Aircraft System Traffic Management (UTM) Convention; Nov 08, 2016 - Nov 10, 2016; Syracuse, NY; United States
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 3
    facet.materialart.
    Unknown
    Control and Simulation of a Deployable Entry Vehicle with Aerodynamic Control Surfaces (2019)
    In:  CASI
    Details
    Publication Date: 2019-09-12
    Description: In this paper, we investigate the static stability of a deployable entry vehicle called the Lifting Nano-ADEPT and design a control system to follow bank angle, angle-of-attack, and sideslip guidance commands. The control design, based on linear quadratic regulator optimal techniques, utilizes aerodynamic control surfaces to track angle-of-attack, sideslip angle, and bank angle commands. We demonstrate, using a nonlinear simulation environment, that the controller is able to accurately track step commands that may come from a guidance algorithm.
    Keywords: Spacecraft Design, Testing and Performance
    Type: AAS 19-919 , ARC-E-DAA-TN73019 , AAS/AIAA Astrodynamics Specialist Conference; Aug 11, 2019 - Aug 15, 2019; Portland, ME; United States
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 4
    facet.materialart.
    Unknown
    UTM Constraint Checking with Vehicle Trajectory (2016)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: No abstract available
    Keywords: Air Transportation and Safety
    Type: ARC-E-DAA-TN33796 , Unmanned Aircraft Systems (UAS) Traffic Management (UTM) Weather Workshop; Jul 19, 2016 - Jul 21, 2016; Moffett Field, CA; United States
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...