development and testing of an unmanned aircraft safety ......between low flying aircraft and uas!...
TRANSCRIPT
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Development and Testing of an Unmanned Aircraft Safety Beacon for
Aerial Application Safety
Wayne Woldt, Ph.D., P.E., and Jacob Smith Biological Systems Engineering
and School of Natural Resources
University of Nebraska-Lincoln
2016 NAAA Convention December 4-7, 2016 – Longbeach, CA ASABE Special Session
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∗ Unmanned Aircraft ∗ Emerging technology ∗ Disruptive innovation
∗ Example Agricultural Applications ∗ Crop scouting ∗ Irrigation management ∗ Livestock stress detection ∗ Drainage systems
Overview
Acknowledgments: Nebraska Aviation Trades Association University of Nebraska - Extension
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∗ Unmanned aircraft are legal for commercial flight ∗ Agriculture projected to be 70% of UAS market ∗ New sUAS rules were finalized on August 29, 2016 ∗ Aerial view offers a strategic advantage
∗ Over the next 10 years, worldwide UAS production will rise
from $4 billion annually to $14 billion annually.1
Motivation
1 Congressional Research Service, 7-5700, www.crs.gov, September 2015
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Single Engine – Fixed Wing
Types of (small) unmanned aircraft
Fixed wing
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Multi-rotor
Types of (small) unmanned aircraft
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Airframe
Flaps
Ailerons Rudder
Elevator
2.3 horsepower motor
Tempest by UASUSA - 11 foot wingspan - 10 to 15 pound payload - 40 mph cruise - 1.5 hour flight duration
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Ground Station and Autopilot
Blackswift Technologies - 3 axis IMU - GPS with WAAS - Static pressure - Indicated Air Speed
Blackswift Technologies - Altitude (msl) - In-flight limits - Orbiting capable - Dynamic waypoints
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∗ FLIR Tau 2 thermal sensor ∗ Mica-sense multi-spectral ∗ 3-D printed sensor mount
The Aircraft / Sensors
* Mention of any product or trade name does not constitute endorsement
- Early detection - Crop stress - Pest management
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∗ Define the mission ∗ Purpose, Area, Strategy, Preflight
Overview of UAS Flight Operations
180 feet
390 feet agl
180 feet
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Onboard Mission Sensor -> Image
Mosaic to field level NDVI 8 cm resolution 22 GB per 160 acres
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∗ Recreation/Hobby ∗ Non-commercial ∗ Registration is required ∗ Community standards (AMA)
∗ Commercial / Civil ∗ Part 107 ∗ Remote Pilot with small UAS rating
∗ Public Aircraft Statues ∗ Certificate of Authorization
Unmanned Aircraft: Regulatory
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∗ Agriculture projected to be 70% of UAS market ∗ If true - there will be a large number of UAS deployed across the
agricultural landscape ∗ Operating in low altitude airspace
∗ Aerial application industry ∗ High velocity / high value aircraft ∗ With human(s) on board!
∗ Operating in the same airspace
Aviation “Perfect Storm”
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Background
∗ Need to understand more about the risk of collision between low flying aircraft and UAS!
∗ But UAS have been illegal to fly ∗ Lack of data to understand risk
∗ Use collisions with birds as analog ∗ Based on report for period 1990 to 2014
* Dolbeer, R.A., Wright, S.E., Weller. J.R., Anderson. A.L., and M.J. Begier. (2015). Wildlife strikes to civil aircraft in the United States, 1990-2014. U.S. Department of Transportation, Federal Aviation Administration, Office of Airport Safety and Standards, Serial Report No. 21. Washington, D.C., USA. 120 pages.
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Background
∗ Need to understand more about the risk of collision between aircraft and UAS!
∗ 11 bird strikes resulting in 25 fatalities ∗ 198 bird strikes resulting in 353 injuries ∗ 23,000 bird strikes with reported damage ∗ 72% of bird strikes occur below 122 m. ∗ $193 million dollars in damage per year ∗ $163,883 per bird strike
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Background
∗ Need to understand more about the risk of collision between low flying aircraft and UAS!
∗ General agreement (*NAAA): ∗ Collision with an unmanned aircraft system will be
worse than collision with a bird ∗ Carbon fiber, LiPo batteries, and metal parts ∗ Up to 25 kg! *NAAA. (2015). Study Shows Toy Drone Collisions
Riskier to Aircraft than Bird Strikes. National Agricultural Aviation Association, eNewsletter, November 25, http://news.agaviation.org/naaa/issues/2015-11-24/2.html.
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∗ Aircraft separation
∗ 91.111 - prohibits operation so close to another aircraft so as to create a collision hazard
∗ 91.113 – lays out structure of right-of-way priorities in the air
∗ 91.113(b) – vigilance shall be maintained by each person operating an aircraft so as to see and avoid other aircraft
Federal Aviation Regulations
* paraphrased
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∗ Freeman, J., and S. Wiggins. 2015. “Think Before You Launch executes Drone visibility testing at the CoAAA Operation S.A.F.E. Fly-In”, AgAir Update, November.
∗ “The results of the test show that UAS are indeed difficult to see. What I heard from a majority of the pilots was that we knew UAVs would be difficult to see, but it turns out they’re more difficult to see than we thought. It’s clear that it will take a cultural change on both our parts [ag aviators and UAS operators] if we’re going to work cooperatively in the airspace… operating line-of-sight isn’t enough to mitigate safety issues.” [Sam Rogge, CoAAA Board President]
Visibility of Unmanned Aircraft
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Need a Safety Solution
∗ Deploy at ground control station ∗ Place beacon on top of field operations vehicle
Whelen M-9 Red White Green
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∗ Extremely bright ∗ Strobe provide directional cues ∗ Beacon elevated on vehicle or tripod for visibility ∗ Relatively low cost for commercial operators ∗ Easy to set up and store ∗ Or permanent mount
Safety Beacon
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Video of Beacon
Safety Beacon
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Flight Test
∗ Methodology ∗ Five flights ∗ Cessna 172 at 120 kts ∗ Pilot and student volunteer ∗ Both with tablet computers
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Flight Test
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Flight Test
Tap tablet upon visual acquisition of beacon
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Visual Acquisition plot
Safety Beacon: Performance
Minimum = 0.45 mile Average = 1.4 miles Maximum = 3.1 miles
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Summary
∗ Established motivation for safety beacon ∗ Introduced NU-AIRE Safety Beacon ∗ Initial flight test results look promising ∗ Part of a “layered” approach to safety ∗ TBYL, mapping, aircraft, electronic, etc.
∗ Unmanned Aircraft Systems in Agriculture ∗ www.learnUASag.org
Acknowledgments: Nebraska Aviation Trades Association University of Nebraska - Extension
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Thoughts? Ideas? Questions?
Thank you!