Michael S. Selig
YOU?
Author Swipe
View article: Parked aeroelastic field rotor response for a 20% scaled demonstrator of a 13‐MW downwind turbine
Parked aeroelastic field rotor response for a 20% scaled demonstrator of a 13‐MW downwind turbine Open
Aeroelastic parked testing of a unique downwind two‐bladed subscale rotor was completed to characterize the response of an extreme‐scale 13‐MW turbine in high‐wind parked conditions. A 20% geometric scaling was used resulting in scaled 20‐…
View article: Performance Testing of APC Electric Fixed-Blade UAV Propellers
Performance Testing of APC Electric Fixed-Blade UAV Propellers Open
The increase in popularity of unmanned aerial vehicles (UAVs) has been driven by their use in civilian, education, government, and military applications. However, limited on-board energy storage significantly limits flight time and ultimat…
View article: Field tests of a highly flexible downwind ultralight rotor to mimic a 13-MW turbine rotor
Field tests of a highly flexible downwind ultralight rotor to mimic a 13-MW turbine rotor Open
Offshore extreme-scale turbines of 20–25 MW in size may offer reduced energy costs. The technical barriers at these extreme scales include escalating blade masses with increased flexibility as well as high gravity loads and tower-strike is…
View article: Active rotor coning for a 25 MW downwind offshore wind turbine
Active rotor coning for a 25 MW downwind offshore wind turbine Open
A two-bladed downwind turbine system was upscaled from 13.2 MW to 25 MW by redesigning aerodynamics, structures, and controls. In particular, three 25-MW rotors were developed, and the final version is a fully redesigned model of the origi…
View article: Aero-structural design and optimization of 50 MW wind turbine with over 250-m blades
Aero-structural design and optimization of 50 MW wind turbine with over 250-m blades Open
The quest for reduced levelized cost of energy has driven significant growth in wind turbine size; however, larger rotors face significant technical and logistical challenges. The largest published rotor design is 25 MW, and here we consid…
View article: Servo-aero-gravo-elastic (SAGE) scaling and its application to a 13-MW downwind turbine
Servo-aero-gravo-elastic (SAGE) scaling and its application to a 13-MW downwind turbine Open
Reduced scale wind turbines can be extremely cost-effective to test new rotor concepts since prototype costs are heavily dependent on the rotor diameter. Ideally, the scaled model would have the same non-dimensional deflections, dynamics, …
View article: Performance Testing of Aero-Naut CAM Folding Propellers
Performance Testing of Aero-Naut CAM Folding Propellers Open
The increase in popularity of unmanned aerial vehicles (UAVs) has been driven by their use in civilian, education, government, and military applications. However, limited on-board energy storage significantly limits flight time and ultimat…
View article: System-level design studies for large rotors
System-level design studies for large rotors Open
We examine the effect of rotor design choices on the power capture and structural loading of each major wind turbine component. A harmonic model for structural loading is derived from simulations using the National Renewable Energy Laborat…
View article: System-level design studies for large rotors
System-level design studies for large rotors Open
We examine the effect of rotor design choices on the power capture and structural loading of each major wind turbine component. A steady-state, harmonic model derived from simulations using the NREL aeroelastic code FAST is developed to re…
View article: Design and Testing of a Scaled Demonstrator Turbine at the National Wind Technology Center
Design and Testing of a Scaled Demonstrator Turbine at the National Wind Technology Center Open
This paper discusses the design, manufacturing, and planned testing of a scaled demonstrator turbine as part of the Segmented Ultralight Morphing Rotor (SUMR) project funded by the Advanced Project Research Agency - Energy (ARPA-E). The sc…
View article: Experiments of Propeller-Induced Flow Effects on a Low-Reynolds-Number Wing
Experiments of Propeller-Induced Flow Effects on a Low-Reynolds-Number Wing Open
Novel findings are discussed in this paper that will be especially beneficial to designers and modelers of small-scale unmanned air vehicles and high-altitude long-endurance vehicles that both operate at low Reynolds numbers (Re = 50,000-3…
View article: Static Performance Results of Propellers Used on Nano, Micro, and Mini Quadrotors
Static Performance Results of Propellers Used on Nano, Micro, and Mini Quadrotors Open
An increase in the number of small quadrotors has created the interest in having performance data on the propellers used by these aircraft. With an aircraft size less than 5 in and propellers diameters less than 3 in, these quadrotors are …
View article: Cover Image
Cover Image Open
The cover image, by Eric Loth et al., is based on the Research Article Downwind pre-aligned rotors for extreme-scale wind turbines, DOI 10.1002/we.2092. Photo Credit: Chao Qin.
View article: Static Testing of Propulsion Elements for Small Multirotor Unmanned Aerial Vehicles
Static Testing of Propulsion Elements for Small Multirotor Unmanned Aerial Vehicles Open
The growing use of small multirotor aircraft has increased the interest in having better performance results especially with the propulsion system. The size of the propellers used on these aircraft operate at low Reynolds numbers that are …
View article: Downwind pre‐aligned rotors for extreme‐scale wind turbines
Downwind pre‐aligned rotors for extreme‐scale wind turbines Open
Downwind force angles are small for current turbines systems (1–5 MW) such that they may be readily accommodated by conventional upwind configurations. However, analysis indicates that extreme‐scale systems (10–20 MW) will have larger angl…
View article: Slipstream Measurements of Small-Scale Propellers at Low Reynolds Numbers
Slipstream Measurements of Small-Scale Propellers at Low Reynolds Numbers Open
The continuing growth in the use of small UAVs has required the need to more fully understand the propellers that power them. Part of this understanding is the behavior of the propeller slipstream. Using a 7-hole probe, the slipstreams of …
View article: A morphing downwind-aligned rotor concept based on a 13-MW wind turbine
A morphing downwind-aligned rotor concept based on a 13-MW wind turbine Open
To alleviate the mass-scaling issues associated with conventional upwind rotors of extreme-scale wind turbines (>/=10 MW), a morphing downwind-aligned rotor (MoDaR) concept is proposed herein. The concept employs a downwind rotor with blad…
View article: Molten Salt as a Heat Transfer Fluid in a Linear Fresnel Collector – Commercial Application Backed by Demonstration
Molten Salt as a Heat Transfer Fluid in a Linear Fresnel Collector – Commercial Application Backed by Demonstration Open
Motivated by the need of thermal storage, Novatec decided in 2012 to put the major product development focus on the development of the direct molten salt technology, applying molten salt directly as a heat transfer fluid (HTF)in Fresnel co…
View article: Systematic Analysis of Fresnel CSP Plants with Energy Storage
Systematic Analysis of Fresnel CSP Plants with Energy Storage Open
S.1201-1210