Tag: Drones

How Hoyle, Tanner is Saving Time and Money with Drone Flights

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Clearing the air! This is what our small Unmanned Aircraft Systems (sUAS – commonly referred to as drones), operators Evan McDougal, CM and Patrick Sharrow, AAE are incorporating into airspace analysis. Evan and Patrick are just two of Hoyle, Tanner’s professional Part 107 remote pilots who are utilizing photogrammetry and advanced autonomous sUAS technology to analyze and access airspace obstructions. With recent media highlighting the challenges of integrating sUAS operations into the National Airspace System, it is an exciting time to focus on the safer, less expensive, and expedient capabilities that these vehicles make possible.

Many organizations, both private and government, are interested in what these small flying sensor system platforms can do. For instance, many state aeronautics agencies that oversee the safety and operation of multiple airports can spend weeks with multiple survey teams and inspectors traveling from airport to airport assessing tree canopy and surrounding buildings – all in an effort to determine if there are obstructions to FAA approach and departure surfaces and pilots utilizing the runway.

In contrast, a drone can be flown by a trained and qualified pilot to collect accurate obstruction data. The three-dimensional results can show the entire area in many formats in a fraction of the time and cost it would take a ground survey crew or aerial survey.

Hoyle, Tanner is passionate about increasing safety and efficiency in aviation. During the September 2018 National Association of State Aviation Officials (NASAO) Annual conference in Oklahoma, Evan McDougal demonstrated his enthusiasm for the emerging technology and the airspace analysis applications we have developed.

Evan showed interested State Aeronautics Department Representatives how they could benefit using sUAS systems for obstruction analysis. Bryan Budds, Transport and Safety Section Manager at the Michigan Department of Transportation (MDOT), was quick to recognize the benefits of this capability and the opportunity to advance the MDOT existing drone program. He arranged for Hoyle, Tanner to spend three days training DOT employees on how to collect accurate obstruction data using drones as well as process it into meaningful deliverables.

The information gathered in the sUAS flights is used to create detailed 3D models of the airport including trees, pavement condition, ground contour elevations, and surrounding land development. Once collected, the data can be used to graphically depict airspace approach corridors that are not able to be seen with the naked eye. Obstructions are clearly shown protruding into protected airspace making it much easier for the airport and responsible landowners to agree on obstruction removal alternatives.

With the proper coordination of sUAS data collection and software processing systems, “clearing the air” can be done economically, accurately, and efficiently. The exciting reality of the sUAS market is that the sky is the limit! Hoyle, Tanner is committed to continually evolving and developing new opportunities to increase safety and efficiency in aviation moving into the future.

Curious about how you could use drones on your next project? Contact our experts Patrick Sharrow, AAE, psharrow@hoyletanner.com or Evan McDougal, CM emcdougal@hoyletanner.com

Drones: Enhancing Safety & Expanding the Aviation Community

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Small Unmanned Aerial Systems (sUAS), or as they are more commonly known as, drones, are changing inspection and construction methods and expanding the aviation community. Drones are the fastest growing segment of aviation. Currently, they are being used by public safety officials, realtors, farmers, engineers and of course by aviation hobbyists across the country. Depending on your perspective, drones are an emerging aerial solution or an impending aerial disaster just waiting to happen.

A major concern of the FAA regulators are the hazards of drones and manned aircraft in the same airspace. On December 12, 2017, Barrie Barber from Cox Newspapers published “FAA: Drones more deadly than birds.” In the article, Barber writes the “FAA has guidelines for building aircraft to withstand bird strikes of a certain weight, but tougher requirements do not exist specifically for drone collisions.” While it might seem obvious that a drone could do some damage, the impact damage of a bird and drone of similar weight are significantly different.

“The research found heavier, stiffer components, such as a drone motor, battery or a camera, could cause more structural damage to an aircraft than birds of the same weight and size,” said Kiran D’Souza, an Ohio State University assistant professor of mechanical and aerospace engineering.

While pilots have reported many drone sightings to the FAA, the FAA reports only one incident in the United States of a drone striking a Military Black Hawk helicopter in October 2017. In fact, the Unmanned Aircraft Safety Team (UAST) Drone Sightings Working Group released a new report on the Federal Aviation Administration’s (FAA) 3,714 drone sightings reports collected by flight crews, air traffic controllers and citizens from November 2015 to March 2017. The report found that only a small percentage of drone reports pose a safety risk, while the vast majority are simply sightings.

Despite growing pains employing drones, many industries and public agencies are adding them as tools and developing workflows to effectively employ them. Stamford Connecticut police Sgt. Andrew Gallagher did an interview for the Fairfield Citizen and explained how his police department has used drones to document and analyze accident scenes, conduct searches and track suspects. Fire Departments are now using drones with infrared cameras to quickly view fire scenes from different angles to best direct the crew response.

“I have stood on more fire trucks than most firemen looking for an overhead shot. We are always looking for something to stand on,” Gallagher says in the article. Drones provide different aerial shots that can give intelligence about where a person or accident could be – in real time, without putting lives in danger.

In addition to first responder use and Amazon’s idea to deliver packages via the airways, drones have provided opportunities in the professional planning and engineering field.

Evan McDougal, Airport Planning Manager with Hoyle, Tanner & Associates, Inc., is an FAA-certified manned aircraft pilot as well as an FAA Section 107 Remote Pilot. McDougal says that drones are an inexpensive data collection solution when airports have tree obstructions that have grown into the runway approach surfaces. These obstructions can limit the ability of pilots to use instrument approaches at night and in some cases the obstructions cause the FAA to increase the cloud ceiling or visibility requirements or limit how low a pilot can descend on approach to a runway. Many runway ends in Maine are not available at night due to known tree obstructions.

McDougal believes drones could be part of the solution.

Drones can quickly capture highly accurate aerial imagery that can be analyzed using photogrammetry software to identify the boundaries of tree canopy penetrating the imaginary (but very real) instrument or visual approach surface. An example of the typical results can be seen in this effort. https://www.dropbox.com/s/iw4vabrcszm5w1s/B21_17%20End%20P4D%20Ani.mp4?dl=0

How it works: while following an autonomous flight plan the drone takes hundreds of georeferenced high definition photos. Photogrammetry software accurately stitches these photos together by matching thousands of key points within adjacent photos. This creates a full orthomosaic of the entire surveyed area and produces a very accurate three-dimensional model or point cloud that can be measured and examined thereby allowing engineers and airport owners to see exactly where runway obstructions exist.

This is but one use for a drone at airports. The technology is evolving very quickly and is limited only by our imagination.