Www.mtri.org Richard J. Dobson (rjdobson@mtu.edu), Colin Brooks, Chris Roussi,rjdobson@mtu.edu Ben...
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- Slide 1
- www.mtri.org Richard J. Dobson (rjdobson@mtu.edu), Colin
Brooks, Chris Roussi,rjdobson@mtu.edu Ben Hart, Dave Dean - MTRI
Unpaved Roads Data Collections
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- Remote Controlled Helicopter Bergen Tazer 800 Weight: 5.22kg,
12.75kg loaded Max flight time: 18 minutes Max Payload: 10kg GPS
IMU: Full autopilot system with the capability of flying
preprogrammed waypoints
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- Remote Controlled Helicopter
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- Ground Station Set waypoints for helicopter collect Google
Earth interface Ability to set the altitude and speed
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- Ground Station
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- Slide 7
- Uploading Waypoints to the Helicopter
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- Data Collects Total flight time: 16 minutes (not including a 2
minute reserve) Flight time for a 200 m section: 4 minutes During
collects helicopter is flown at 2 m/s and at an altitude of 25 m
and 30 m (below 100), rural areas only Camera Used: Nikon D800 36.3
MP resolution 55 mm prime lens 8
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- Unpaved Road Characteristics Unpaved roads have common
characteristics Cross Section (Loss of Crown) Facilitates drainage,
typically 2% - 4% (up to 6%) vertical change Sloping away from the
centerline to the edge Measure the profile every 10' along the road
direction Able to detect a 1% change across a 9'-wide lane Potholes
3 width bins 4 depth bins Ruts Detect features >5, >10' in
length, precision +/-2 Corrugations (washboarding) Classify by
depth to a precision of +/-1 3 Report total area of the reporting
segment affected Roadside Drainage System should be able to measure
ditch bottom Relative to road surface within +/-2, if >6 Detect
the presence of water, elevation +/-2, width +/-4 Float aggregate
(berms) Surface type Surface width Collected every 10', with a
precision of +/- 4
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- Site Preparation Road divided into 50 m sections (for test
flights) Road was blocked during flights
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- Distress Measurements Measurements are taken of all distresses
within the segment Potholes Rutting Washboarding Loose
aggregate
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- Remote Controlled Helicopter Demonstration
http://www.youtube.com/watch?v=KBNQzM7xGQo
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- Piotter Rd. and Garno Collect November 8, 2012
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- Helicopter Collect Piotter Rd.
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- Helicopter Data Piotter Rd. 25 m Altitude
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- Helicopter Collect Garno Rd.
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- Helicopter Data Garno Rd. 25m Altitude
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- Resolution from 25m at Garno Rd.
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- Aerial Collect Aircraft: Cessna 172 Average air speed: 65 Knots
(~75 mph) Altitudes flown: 500 and 1000 feet Nikon D800 with 105 mm
prime lens
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- Aerial Collect Piotter
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- Aerial Data Piotter Rd. 500 ft Altitude
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- Aerial Collect Garno Rd.
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- Aerial Data Garno Rd. 500 ft Altitude
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- 2013 Collects Planned addition of Bergen Hexacopter Compare
& contrast capabilities of single-rotor helicopter vs.
multi-rotor helicopter Fly rural unpaved roads with variety of
distresses New aerial collect with 200 mm lens Camera will be
mounted to the door of a Cessna 152 - nadir Working with John
Sullivan of Aerial Associates Photography, Inc., as recommended by
President of Professional Aerial Photographers Association Chuck
Boyle 2013 collection details will be documented in Deliverable 7-A
Field Deployment Plans report, due 5/30/2013