We were recently approached by an engineering company with an interesting problem. The needed a gallon of water from the bottom of a mine pit for testing. Complicating matters, was the fact that no one had been to the bottom of the pit in over 30 years. The haul roads that would have provided access were all severely washed out and degraded making travel to the bottom of the pit unsafe. Initially, we thought it would be quite simple to send a drone to the bottom of the pit and retrieve some water using a standard bailer. We did a few tests at our test range which has a small lake, ensuring that the bailer would work without being in a pipe. After a few modifications, the drone was set. Another problem is that drones use an enormous amount of energy while climbing. On a typical mapping mission, this is usually done that the beginning of the flight, when batteries are fresh and full of power. Add additional weight, and you have a recipe for disaster. We did some additional tests to determine the maximum weight, and energy required for the trip. Additionally, just seeing the drone – a 1000′ feet down, and determining how high it is above the water surface was also a challenge. We opted to use two drones, one large one for the water sample and a smaller drone, with a high definition camera to give the pilot of the first drone clear visibility of bailer over the water. It took four trips, each lasting about 10 minutes to collect a full gallon of bright green highly alkaline mine pit water. The big bonus – the incredible video that we collected from the bottom of the pit – untouched in over 30 years.
2125 E 5th St. Suite 101
Tempe, AZ 85281
Syn Geo Office
- Drone joins HM Coastguard air, land and sea rescue teamsHM Coastguard’s first operational drone flight will join manned helicopters, planes, boats and cliff rescue teams on lifesaving missions at sea and over land in North Wales for the first time, this summer. The drone, initially trialled a year ago during the first easing of pandemic restrictions, will fly from the HM Coastguard helicopter base […]Press
- Archer Wins; Defeats Wisk’s Motion for Preliminary InjunctionJudge denies Wisk’s motion for preliminary injunction against Archer Judge finds Wisk’s evidence too uncertain and equivocal PALO ALTO, Calif, July, 2021 – A federal judge in San Francisco today denied Wisk’s request for a preliminary injunction against rival Archer. The court determined that Wisk failed to make its case -“Wisk has not shown a likelihood […]Press
- Sentera Introduces Real-Time Mapping to Enhance the Delivery of Timely and Actionable Decision SupportSentera is excited to announce the expanded beta availability of the Real-Time Mapping (RTM) feature for the FieldAgent Aerial Scouting iOS app. In just seconds, RTM provides high-quality map products, at the field edge, with no internet connection required, further supporting Sentera’s commitment to deliver the best set of tools for identifying issues in the field. Real-Time […]Press