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Lighting Applications for Unmanned Aircraft Systems (UAS)

A-20B Exterior Lighting Committee
  • Aerospace Standard
  • ARP6336
  • Current
Published 2019-12-05 by SAE International in United States

This SAE Aerospace Recommended Practice (ARP) provides technical recommendations for the lighting applications for Unmanned Aircraft Systems (UAS). The technical content of this ARP discusses the unique trade-offs that are necessary to maintain commonality to the U.S. Federal Aviation Regulations (FARs) for aerospace lighting. The recommendations set forth in this document are to aid in the design of Unmanned Aircraft (UA) lighting for the size of aircraft and operation for which the aircraft is intended. In addition, certain concepts of operation for which UASs are suited will require unique lighting solutions.

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Stall Mitigation and Lift Enhancement of NACA 0012 with Triangle-Shaped Surface Protrusion at a Reynolds Number of 105

SAE International Journal of Aerospace

University of Petroleum and Energy Studies, India-Aslesha Bodavula, Rajesh Yadav, Ugur Guven
  • Journal Article
  • 01-12-02-0007
Published 2019-11-22 by SAE International in United States
Transient numerical simulations are conducted over a NACA 0012 airfoil with triangular protrusions at a Reynolds number (Re) of 100000 using the γ-Reθ transition Shear Stress Transport (SST) turbulence model. Protrusions of heights 0.5%c, 1%c, and 2%c are placed at one of the three locations, viz, the leading edge (LE), 5%c on the suction surface, and 5%c on the pressure surface, while the angle of attack (AOA) is varied between 0° and 20°. Results obtained from the time-averaged solution of the unsteady Navier-Stokes equation indicate that the smaller protrusion placed at 5%c on the suction surface improves the post-stall lift coefficient by up to 59%, without altering the pre-stall characteristics. The improvement in time-averaged lift coefficients comes with enhanced flow unsteadiness due to vigorous vortex shedding. For a given protrusion height, the vortex shedding frequency decreases as the AOA is increased, while the amplitude of fluctuations in lift coefficient increases as the protrusion height is increased or as the AOA is increased. Nevertheless, mitigation of static stall phenomena is observed for most configurations investigated, and…
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Analysis and Aerodynamic Stability on Design of Low cost and Economical Monocopter

UG Scholar-Harshil Bhandari
  • Technical Paper
  • 2019-28-2523
Published 2019-11-21 by SAE International in United States
Most recent or all developments in the field of small UAV’s seem to use Quadcopters. It’s a valued commenting that a quadcopter is a smaller amount stable than a similar regular chopper and is additionally less economical. A Quadcopter UAV’s with four propellers is always a major concern to the society when brings to its stability as its major factor. To design and analyze the use of one propeller monocopter is the main objective of this paper. Wacky Whirler technology used here to demonstrate the passage of the monocopter. It is a single propeller powered with a coreless motor which is a modern enhancement in the UAV. It is based on the All Rotating monocopter theory. In the proposed system, controller based on IOT can be used which will be helpful in monitoring and processing the microdrone status. These forms of style have several potential applications in surveillance and agriculture; there are several eventualities wherever it's tempting for the stable UAV to be able to travel safely to long distances and hover for extended periods of time.
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Information on Brake-By-Wire (BBW) Brake Control Systems

A-5A Wheels, Brakes and Skid Controls Committee
  • Aerospace Standard
  • AIR5372A
  • Current
Published 2019-10-25 by SAE International in United States
This SAE Aerospace Information Report (AIR) describes the design approaches used for current applications of aircraft Brake-by-Wire (BBW) control systems. The document also discusses the experience gained during service, and covers system, ergonomic, hardware, and development aspects. The document includes the lessons that have been learned during application of the technology. Although there are a variety of approaches that have been used in the design of BBW systems, the main focus of this document is on the current state of the art systems.
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Defeating Commercial Drone Threats with Open-Source SDR

  • Magazine Article
  • TBMG-35353
Published 2019-10-01 by Tech Briefs Media Group in United States

It’s nearly impossible to look at technology news without seeing an article about drones. Whether detailing how Amazon wants to use drones to deliver packages or revealing amazing aerial video of drones following Olympic snow-boarders, commercial drones are ubiquitous. Drone emergence has benefited many applications including sports broadcasting and wildlife preservation wilderness surveys. Offering powerful, intelligent software, drones are becoming less expensive and easier to use, with substantial operating range.

Drone Control System

  • Magazine Article
  • TBMG-35357
Published 2019-10-01 by Tech Briefs Media Group in United States

Kongsberg Geospatial Ottawa, Ontario, Canada 1-800-267-7330

Lightweight Sensing and Control System for Unmanned Aerial Vehicle Monitoring

  • Magazine Article
  • TBMG-35273
Published 2019-10-01 by Tech Briefs Media Group in United States

A new sensing and control system for unmanned aerial vehicles (UAVs) allows for semi-autonomous flight. Pilots need not leave the ground to conduct routine monitoring and surveillance quickly and cost-effectively. Such systems are particularly useful during long flight segments or over remote locations, or for scientific applications such as atmospheric monitoring or crop monitoring, which might require long and repeated sampling in a specific pattern. The small, lightweight technology can be quickly adapted to a specific configuration.

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Defeating Commercial Drone Threats with Open-Source SDR

Aerospace & Defense Technology: October 2019

  • Magazine Article
  • 19AERP10_06
Published 2019-10-01 by SAE International in United States

With the emergence of highly capable, low-cost, wirelessly controlled drones, bad actors can easily execute disruptive operations. Such incidents have created a need for drone defense systems that rapidly evolve with ever-increasing threat frequency and sophistication.

It's nearly impossible to look at technology news without seeing an article about drones. Whether detailing how Amazon wants to use drones to deliver packages or revealing amazing aerial video of drones following Olympic snowboarders, commercial drones are ubiquitous. Drone emergence has benefited many applications including sports broadcasting and wildlife preservation wilderness surveys. Offering powerful, intelligent software, drones are becoming less expensive and easier to use, with substantial operating range.

Annotation ability available

Aircraft Vertical Takeoff and Landing

  • Magazine Article
  • TBMG-35284
Published 2019-10-01 by Tech Briefs Media Group in United States

NASA’s Langley Research Center developed an inexpensive, long-endurance, vertical takeoff and landing (VTOL) unmanned aerial vehicle (UAV). It is capable of flying for 24 hours, landing in a 50 × 50 zone, and can be loaded into the back of a cargo van for easy transport. In addition, it can land in either a horizontal or vertical flight configuration.

Neural Lander Uses AI to Land Drones Smoothly

  • Magazine Article
  • TBMG-35288
Published 2019-10-01 by Tech Briefs Media Group in United States

Landing multi-rotor drones smoothly is difficult. Complex turbulence is created by the airflow from each rotor bouncing off the ground during a descent. This turbulence is not well understood nor is it easy to compensate for, particularly for autonomous drones. That is why takeoff and landing are often the two most difficult parts of a drone flight. Drones typically wobble and inch slowly toward a landing until power is finally cut and they drop the remaining distance to the ground.