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Multiple Sensors Aid in Development of an Electrical Vertical Takeoff and Landing Aircraft

  • Magazine Article
  • TBMG-36157
Published 2020-03-01 by Tech Briefs Media Group in United States

Beta Technologies (South Burlington, VT) has built a prototype Electrical Vertical Takeoff and Landing aircraft (eVTOL) and is putting it through the wringer. They are using wireless sensor systems from Parker LORD, MicroStrain® Sensing Systems (Williston, VT) to monitor the structures and functions of the prototype, both on a test stand and in flight.

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Hyundai, Uber show electric VTOL air-taxi concept

Automotive Engineering: March 2020

Bill Visnic
  • Magazine Article
  • 20AUTP03_11
Published 2020-03-01 by SAE International in United States

Hyundai at CES 2020 revealed a fullsize electric vertical-takeoff-and-landing (eVTOL) “air taxi” concept and confirmed it has joined Uber's aerial ride-share initiative known as Elevate. Hyundai said the S-A1 concept, in addition to its VTOL configuration, is designed for cruising speeds up to 180 mph (290 km/h) for trips of up to 60 miles (97 km). Operating altitudes are targeted at between 1,000 to 2,000 ft. (300 to 600 m) for the four-passenger vehicle. The S-A1's performance is within Uber Elevate's broad guidance for urban aero-rideshare designs.

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Aircraft Vertical Takeoff and Landing

  • Magazine Article
  • TBMG-35284
Published 2019-10-01 by Tech Briefs Media Group in United States

NASA’s Langley Research Center developed an inexpensive, long-endurance, vertical takeoff and landing (VTOL) unmanned aerial vehicle (UAV). It is capable of flying for 24 hours, landing in a 50 × 50 zone, and can be loaded into the back of a cargo van for easy transport. In addition, it can land in either a horizontal or vertical flight configuration.

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Is the Future of Aerial Autonomy Up in the Air?

Autonomous Vehicle Engineering: March 2019

Jennifer Dukarski
  • Magazine Article
  • 19AVEP03_13
Published 2019-03-01 by SAE International in United States

As autonomous-drone and air-taxi concepts debut, legal hurdles will need to be cleared before the skies are automated.

Autonomous vehicle technology literally has nowhere to go but up. At CES '19, more than 170 exhibitors showed aerial drones of various shapes and sizes. Potential use cases for these devices appear to be limitless, but technical, legal and regulatory hurdles must first be overcome.

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Aircraft Parachute Recovery Systems

  • Magazine Article
  • TBMG-33761
Published 2019-02-01 by Tech Briefs Media Group in United States

BRS Aerospace South St. Paul, MN 651-457-7491

Vertical Take Off and Landing (VTOL) Aircraft with Vectored Thrust for Control and Continuously Variable Pitch Attitude in Hover

  • Magazine Article
  • TBMG-33584
Published 2019-01-01 by Tech Briefs Media Group in United States

Most fixed-wing VTOL unmanned aerial vehicles (UAVs) take off vertically, then transition to horizontal flight. This is a new type of UAV that has unique capability. It can vary its hover position from “nose up” (tailsitter) to “nose forward” (non-tailsitter) incrementally and continuously, and even hold a position at any angle in between.

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Numerical and Experimental Second Law Analysis of a Low Thickness High Chamber Wing Profile

Henri Coanda Labs LLC-Shivesh Sharma
Sheffield Hallam University-Michele Trancossi
Published 2018-10-30 by SAE International in United States
This paper presents a coupled numerical and experimental study of an unconventional wing profile such as cp-180-050-gn (Cambered plate C = 18% T = 5% R = 0.78). This wing profile deals with low speeds. It is not currently used on any aircraft model. Otherwise, it presents interesting performances that can be exploited for the design of low-speed STOL or VTOL aircraft by mean of the very high lift that it can generate and can fit with different uses such as VAWT, cyclorotors drones, which are designed explicitly for low-speed operations. After a preliminary CFD assessment of the wing a complete experimental characterisation also at high angles of attack has been performed. The excellent agreement between CFD and experiments has allowed producing a complete analysis of the behaviour of the wing profile both before and after stall conditions. This study has the objective of analysing the viability of such an unconventional wing in traditional or over-stalling conditions. A complete modelling of the specific wing is produced with the definition of its potential deployment into unconventional…
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Modeling of Ducted-Fan and Motor in an Electric Aircraft and a Preliminary Integrated Design

SAE International Journal of Aerospace

Tsinghua University, China-Yuzhi Jin, Yuping Qian, Yangjun Zhang, Weilin Zhuge
  • Journal Article
  • 01-11-02-0007
Published 2018-10-04 by SAE International in United States
Electric ducted-fans with high power density are widely used in hybrid aircraft, electric aircraft, and VTOL vehicles. For the state-of-the-art electric ducted-fan, motor cooling restricts the power density increase. A motor design model based on the fan hub-to-tip ratio proposed in this article reveals that the thermal coupling effect between fan aerodynamic design and motor cooling design has great potential to increase the power density of the motor in an electric propulsion system. A smaller hub-to-tip ratio is preferred as long as the power balance and cooling balance are satisfied. Parametric study on a current 6 kW electric ducted-fan system shows that the highest motor power density could be increased by 246% based on the current technology. Finally, a preliminary design was obtained and experiments were conducted to prove the feasibility of the model.
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VTOL UAV with the Cruise Efficiency of a Conventional Fixed-Wing UAV

  • Magazine Article
  • TBMG-29044
Published 2018-06-01 by Tech Briefs Media Group in United States

NASA Langley Research Center has developed Greased Lightning, the first unmanned aerial vehicle (UAV) that combines vertical take-off and landing (VTOL) capability with long-endurance flight. Previously, these two capabilities were considered mutually exclusive; for example, helicopters offer VTOL capability, yet are inefficient for long-endurance travel.

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A New VTOL Propelled Wing for Flying Cars: Critical Bibliographic Analysis

Sheffield Hallam Univ.-Michele Trancossi, Mohammad Hussain, Sharma Shivesh
Universidade Da Beira Interior-Jose Pascoa
Published 2017-09-19 by SAE International in United States
This paper is a preliminary step in the direction of the definition of a radically new wing concept that has been conceived to maximize the lift even at low speeds. It is expected to equip new aerial vehicle concepts that aim to compete against helicopters and tilt rotors. They aim achieving very good performance at very low speed (5 to 30 m/s) by mean of an innovative concept of morphing ducted-fan propelled wing that has been designed to maximize the lift force. This paper presents an effective bibliographic analysis of the problem that is a preliminary necessary step in the direction of the preliminary design of the wing. A preliminary CFD evaluation allows demonstrating that the claimed results are in line with the initial expectations. According to the CFD, results it has been produced a preliminary energetic evaluation of the vehicle in a flying car configuration by EMIPS method. Even if the results are still preliminary, they allow evidencing a good energy efficiency of the vehicle against helicopters.
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