Author - Pamela

Multi-Rotor or Single-Rotor: Which choice for your next project?

Although multi-rotor drones get most of the attention in the UAV world today, they’re not the only option for a flight project. But why would someone choose a multi-rotor over a single-rotor...or vice versa? Read on to learn the differences between the two, as well as their strengths and weaknesses. A key difference between the two, not surprisingly, is the number of rotors each offers. A multi-rotor aerial vehicle has several rotors that keep it airborne. In contrast, a single-rotor vehicle has one rotor plus a tail rotor to control its heading.  

Multi-Rotor

A multi-rotor is a good choice for operators who need to get a camera in the air for a short period of time. Multi-rotor drones are best for aerial photography and aerial cinematography. One of the advantages a multi-rotor is its high-degree of control over position and framing for aerial shots. However, a downside is speed and endurance limitations. Multi-rotor's high-level of stabilization comes with a constant need for fast and high-precision throttle changes. As such, Rules of aerodynamics dictate that the larger a rotor blade, the slower it spins, resulting in more efficiency. As such, a quad-copter is more efficient than an octo-copter but less efficient than a single-rotor. Flight time isn’t due to battery, but rather weight. There are options to help increase flight duration and payload capacity. A brushless motor for a heavy-lift electric multi-rotor is the best option for longer flight time and zero-vibration operations. If an operators wants the drone to stay airborne longer with a more substantial camera attached, a brushless motor for heavy-lift electric multi-rotor is your best option for longer flight time and zero-vibration operation.  

Single-Rotor

A single-rotor helicopter or other airborne tech project offers greater efficiency than a multi-rotor. Currently, single-rotor vehicles fill a small niche in the drone world. Single-rotors offer certain advantages. Remember the rules of aerodynamics? A single-rotor helicopter allows for longer blades to enable slower spinning and therefore expend less energy. Some applications require extended hovering, heavy payloads and/or long endurance. In these instances, a single-rotor may be the right option. However, single-rotor helis also have disadvantages. One knock is that they have significantly more vibration than a multi-rotor UAV. The larger blades also pose more danger. If a single-rotor UAV loses its overhead blade, the aircraft doesn't feature the fail safe of additional propellers. Whether flying a multi-rotor or a single-rotor, quality parts and components are vital for safety and performance.  

KDE Direct offerings

From pocket quad-copters for public safety to scanning depths of the ocean floor, KDE Direct constructs durable and efficient brushless motors and propeller blades for various applications. KDE Direct designs large motors, such as the KDE8218XF-120, for heavy lift down to miniature motors. KDE Direct UAS Multi-Rotor Brushless Motor Series is designed for UAS applications. These high-quality engineered motors provide zero-vibration operation for hours of maintenance-free usage and market-leading performance. The motors are tuned and optimized for the KDE Direct UAS Multi-Rotor Electronic Speed Controller Series.   KDE Direct is a worldwide leader in single-rotor brushless motors. The Generation 3 series uses top-tier materials and manufacturing processes to take the limits of efficiency, flight performance, and maintenance-free durability to new heights. The "G3" series provides state-of-the-art technology and performance-enhancements for the single-rotor marketplace and UAS applications.  

Reforestation at Industrial Scale Possible Via Drone?

A former NASA engineer is harnessing the potential of drone technology for a very ambitious project. The project? Ecosystem restoration. More precisely, scaling reforestation projects to a size previously unimaginable. The goal? Plant 1 billion trees every year...via drone. Lauren Fletcher spent 20 years at NASA as an engineer before founding BioCarbon Engineering. The startup's entire focus is reforestation. More precisely, reforestation via the use of drones. BioCarbon Engineering plans to combat deforestation and restore global forests with a unique solution. Their platform takes the best data available and enables local specialists to restore their landscapes both quickly and affordably.  

Industrial-scale Combating Clear-Cutting, 1 Billion Trees at a Time

Advancements in technology facilitated the large-scale harvesting of forests. Now, in a process known as clear cutting, acres of forests are harvested in a single day. Each year, it is estimated that clear-cutting is responsible for the disappearance of 26 billion trees around the world. Reforesting such vast areas is a challenge. The end result? Trees are cut down much quicker than they are replaced. Industrial-scale deforestation around the world is threatening to upset the ecosystem’s balance. To combat the danger, reforestation projects continue to gain prominence. Through various initiatives, many countries are actively working to replace trees. Traditionally, reforestation is done by hand. On average, a single individual can plant 3000 seeds or saplings in a day. This method is labor intensive and time consuming which makes closing the gap on deforestation frustratingly slow. BioCarbon Engineering believes technology holds the answer. Drone technology can speed up and improve the process of replanting trees. They hope to improve the replanting rate to a projected 36,000 plants per day...or 1 billion trees in a year. Because terrains can vary, using drones to plant trees and regenerate forests is not meant to replace the human element, but complement it.  

Reforestation via Drone?

BioCarbon's plan? Modify consumer drones so they can plant seeds and tree saplings. But that's just the start. What follows is a simple, yet clever way of using the drones to improve the speed and efficiency of replanting efforts. First, drones fly over a potential site, take photographs and conduct an aerial surveys. The team then creates a 3D aerial map and a "seeding" plan suitable for the terrain. The team developed specialized pods which contain germinated seeds packed in a nutrient-rich substance. These bio-degradable pods sustain and protect the young plant until it can take root. The pods load into a pressurized canister aboard the drone and fire into the ground. Drones fly a path that is roughly 3-6 feet above the ground. The number of drones in operation depends on the size of the site. BioCarbon estimates that just two drone pilots operating multiple UAVs can plant up to 36,000 saplings a day. If successful, the company’s approach would significantly improve global reforestation efforts.  

Replacing Tree Losses on a Massive Scale

Today, some of the highest rates of deforestation occur in Latin America, Brazil, Malaysia, and the Philippines. Additionally, parts of Africa face the same issue. This may explain why Fletcher and BioCarbon are targeting projects in South Africa and the Amazon jungle first. In addition to improving reforestation efforts, drones can also access areas that are inaccessible to humans. Plus, BioCarbon believes this technology can help improve the overall health of local ecosystems. For example, pods can help spread various fungi and micro-organisms that improve soil quality as well as diversify the species of trees replanted in the forest. The efforts of BioCarbon is another example of drone use for humanitarian purposes. The company’s goals align with the UN’s plan to restore up to 300 billion trees by the year 2030. And, tree planting drones may just bring that goal within reach.  

MicroPilot Autopilot Successfully Interfaces Landing Assist Functionality

MicroPilot recently announced the successful interface of SightLine Applications’ landing assist functionality with MicroPilot’s autopilots. This new functionality gives integrators the option of a robust landing assist feature. As such, it helps reduce operator workload and training requirements. This feature rolls out in version 3.7.1016 of MicroPilot’s HORIZONmp software.  

Landing Aid features

SightLine Applications’ Landing Aid is a video based landing assist. It enables safe operations, even in GPS degraded (urban canyon, indoors, etc.) or GPS denied environments. Landing Aid uses a down-facing camera mounted on the UAV to track on a specified “landing pattern”. It provides accurate relative-position data to the autopilot. This enables the UAV to land with more precision than conventional GPS. The 8gm video processor enables low SWAP landing assist implementations.  

Need for greater precision

As the use of UAVs expands into a variety of civil and commercial applications, autonomous precision landings become more vital. SightLine’s Landing Aid taps into this need. Its functionality, along with reduced operator workload, and its landing area safety checks, sets Landing Aid apart. Previously, MicroPilot demonstrated compatibility with SightLine video processors, which are in a wide range of ISR gimbaled camera systems. Integrating SightLine Applications’ landing assist functionality with the autopilot was a logical next step. This provides a convenient package encompassing both a professional grade UAV autopilot and video landing assist for the ever-advancing UAV market.  

About MicroPilot

Started in 1994, with 1000 clients in over 85 countries, MicroPilot is the world leader in professional autopilots for UAVs and MAVs. An ISO 9001 autopilot manufacturer, MicroPilot brings to market an ISO 9001 sub 30 gram autopilot, triple redundant autopilot, and full-function general purpose autopilot. It offers a family of lightweight UAV autopilots that can fly fixed-wing, transitional, helicopter, and Multirotor UAVs. MicroPilot also provides complementary products such as the XTENDERmp SDK, and trueHWIL2.   Shop MicroPilot's line of autopilots at Unmanned Systems Source.

VectorNav Earns AS9100 Designation for Dallas Facility

VectorNav Technologies announced it received accreditation for the AS9100 Rev. D international aerospace standard for its Dallas, Texas headquarters. AS9100 is a set of quality requirements established by the aerospace industry to satisfy DOD, NASA and FAA quality requirements. These quality requirements are based on ISO 9001 standards. “Earning the AS9100 designation for our Dallas facility demonstrates we are a highly capable supplier to the aerospace industry. Operating to the highest standards of quality is a core principle for us," said Scott MacDonald, Process and Quality Engineer at VectorNav. "This certification reflects our continued commitment to ensure our processes and systems deliver products and services that exceed our customers’ quality, cost, and speed expectations.”  

About VectorNav

Founded in 2008, VectorNav is a market innovator of miniature, high-performance MEMS- and GPS/GNSS-based inertial navigation systems. The releases of VectorNav’s surface mount VN-100 IMU/AHRS, VN-200 GPS/INS and VN-300 dual antenna GNSS/INS were each market firsts. Recently, the company released a line of tactical-grade inertial navigation systems that delivers an excellent price/performance ratio. The AS9100 accreditation marks VectorNav’s achievement in demonstrating the highest level of manufacturing, quality and customer service standards. The certification represents VectorNav’s ability and commitment to deliver the highest quality miniature inertial navigation systems -- from rapid procurement during testing and development to high-volume capacity for integration and production.   Shop VectorNav's entire line of sensors, industrial and tactical, at Unmanned Systems Source.

SPH Engineering Releases Updates for UgCS v2.12 and UgCS for DJI v2.8

SPH Engineering released updates for both UgCS and the mobile companion, UgCS for DJI. The update enhances the overall end-user experience as well as features for professional UAV survey mission planning.  

Enhanced features

In order to acquire more precise aerial data, a double grid option is now available for Area scan and Photogrammetry tool. When a new Photogrammetry area is added to the survey mission, the action Camera by time (with auto flag) is added by default. Many mission planning features now offer a more friendly end-user experience. Enhancements include: the option to move and rotate route, manage common actions for selected segments and display calculated path leg length on cursor-hover. Additionally, polygon side length and calculated area size are now displayed. “Data import, flight planning and control are features that characterize UgCS. Adding the desktop geo-referenced image processing software, UgCS Mapper, to our portfolio provides a nearly complete ground control and mapping platform for UAV professionals," said Janis Kuze, Sales Director at SPH Engineering. "For our customers UgCS Mapper provides significant insight to acquired data quality on site. This will save time and ensure better result. It's truly a PRO solution for PRO’s.”  

Added upgrades

Furthermore, SPH Engineering announced the release of the UgCS Mapper (beta). UgCS Mapper is a geo-referenced image processing software for the desktop. It creates preliminary ortho-photo map in-field, requiring no internet connection. While in beta UgCS Mapper is available for all users, after official release it will be a part of the UgCS PRO and UgCS ENTERPRISE packages. Additional Ardupilot features include: the option to connect over UDP, an added command and action SET_SERVO and REPEAT_SERVO. Plus, the ability to set constant heading (disable yaw to next waypoint). Some of the new UgCS for DJI features, include: drones with multiple video feed option to select video source added, zoom control widget improved and a notification is displayed when a waypoint is reached and left.  

Update links

Download the latest version of UgCS v2.12 and UgCS for DJI v2.8 below. Shop UgCS line of software packages at Unmanned Systems Source.

MicroPilot Integrates Autonomous Sense & Avoid System for UAV Operations

MicroPilot announced the successful integration of FLARM’s Sense and Avoid system with its autopilot. This integration grants clients a reliable autonomous collision avoidance option for fully autonomous UAV operations. With any form of autonomous vehicle, a primary concern is safely avoiding collisions with other craft...without the need for human intervention. A sense and avoid system allows a UAV to do exactly that. Thus, it dramatically reduces operational risks and the need for human monitoring.  

What is FLARM?

FLARM is a traffic awareness and collision avoidance technology used by light aircraft and UAVs. When integrated with MicroPilot’s autopilot, the system alerts the autopilot of nearby aircraft, along with its velocity and altitude. The autopilot uses the information to avoid the aircraft. Thus, it autonomously prevents a collision without a single input from the human operator. With increasingly crowded airspace and the popularity of UAVs, a reliable sense and avoid system is quickly becoming a necessity. This is especially true for beyond visual line of sight (BVLOS) and other autonomous operations. This new system should give operators the confidence to use their UAVs to the full extent of their abilities. “FLARM has been in use for over a decade helping manned aircraft avoid midair collisions,” says FLARM. “We are very happy to see that UAVs are the next type of vehicle that benefit from FLARM, and that UAVs are becoming visible to manned aircraft.”  

Sense and Avoid technology

This integration may give UAV manufacturers the confidence to market larger and longer-range UAVs. Consequently, it also gives operators the confidence to conduct long-range BVLOS operation. Combined, this technology furthers the utility and viability of UAVs.  

About MicroPilot

Started in 1994, with 1000 clients in over 85 countries, MicroPilot is the world leader in professional autopilots for UAVs and MAVs. MicroPilot offers a family of lightweight UAV autopilots that can fly fixed-wing, transitional, helicopter, and Multirotor UAVs. MicroPilot also provides complementary products such as the XTENDERmp SDK, and trueHWIL2.   Shop MicroPilot's line of autopilots at Unmanned Systems Source.