Measurement of Torque Moment of Aircraft Electric Drive Unit

2013 ◽  
Vol 486 ◽  
pp. 173-180
Author(s):  
Jindřich Rosa ◽  
Jan Cagáň
Keyword(s):  
Electric Drive ◽  
Test Stand ◽  
Strain Gages ◽  
Testing Laboratory ◽  
Drive Unit ◽  
Design Modification ◽  
Torque Moment ◽  
Ground Test ◽  
Power Testing ◽  
Small Airplanes

Aircraft Propeller Testing Laboratory of VZLÚ Praha-Letňany has taken part in a project called EPOS the development of an electric drive unit for small airplanes, with power up to 60 kW. The article describes preliminary phases of power testing of the complete propulsive unit in its first design modification on a ground test stand. The torque moment was measured using a special shaft element equipped with strain-gages.

Effect of Metal Coating on FRP Blade Lightning Failure for Wind Power Generators

2005 ◽  
Author(s):  
H. Sakamoto ◽  
A. Takebayashi ◽  
M. Hanai
Keyword(s):  
Wind Power ◽  
Experimental Situation ◽  
Metal Coating ◽  
Testing Laboratory ◽  
Power Generators ◽  
Full Size ◽  
Wind Power Generator ◽  
Power Testing ◽  
Blade Failure ◽  
Wind Power Generators

In Japan, with the recent increase in wind power generator installations, the incidence of lightning damage to FRP blades is increasing. Lightning damage is a significant issue in Japan since lightning in Japan seems severer than that in Europe or the US. In Kochi, Japan, six 600-750 kW grade generators have been installed, and some have been damaged by lightning several times. To resolve this problem, the Kochi University of Technology received a request in 2002 from the Kochi prefectural government for research into lightning protection. After surveying the literature and questioning related organizations such as NREL and Toray USA, experiments to protect against lightning damage to FRP blades of wind power generators were planned. Half size models and two 1/4 parts of a full size 250kW blade were prepared as specimens for this research. The method investigated to protect against lightning damage was metal coating. The aim being to protect against blade failure by using metal coating in actual field situations; by using a 1/2 size model and the full size blade specimens in an experimental situation. As in previous experiments, these ones were mainly conducted in the Toshiba Hamakawasaki High Voltage High Power Testing Laboratory. This Testing Laboratory is one of the biggest test laboratories for experiments involving high voltages and large currents.

scholarly journals Drive unit characteristics of a completely electrical passenger aircraft

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Jean-Marc Fąfara
Keyword(s):  
Electric Drive ◽  
Power Supply System ◽  
Human Life ◽  
Good Alternative ◽  
Supply System ◽  
Drive Unit ◽  
Electric Aircraft ◽  
The Many ◽  
Passenger Aircraft ◽  
Near Future

AbstractAviation has, over the years, become an inseparable element of human life. Airplanes are very commonly used for various tasks, such as transport of passengers and goods, military attack and defence, rescue, recreation and so on. In spite of the many advantages of aviation, one cannot ignore its disadvantages. The most important disadvantages of aviation are the emissions that cause atmospheric pollution and noise. Additionally, one should remember about the decreasing stocks of non-renewable fuels. These drawbacks affect human health and the natural environment. Therefore, a good alternative to conventional drive units in aircraft may turn out to be electric drive units in the near future. The aim of this article is to check the extent to which today’s knowledge and technology allow the use of electric drive units instead of conventional aircraft drive units. This article presents the concept of electric aircraft, from the electric drive unit to its power supply system. The feasibility of designing an electric jet drive unit for a passenger aircraft was analysed based on the performances of PZL 104 Wilga 35 and Boeing B787 Dreamliner.

Highly Integrated Electric Drive Unit for Passenger Cars

MTZ worldwide ◽  
2019 ◽  
Vol 80 (4) ◽  
pp. 62-66
Author(s):  
Peter Janssen ◽  
Gereon Hellenbroich ◽  
Hans-Peter Lahey
Keyword(s):  
Electric Drive ◽  
Passenger Cars ◽  
Drive Unit

Highly Integrative and flexible Electric Drive Unit for Electric Vehicles

ATZ worldwide ◽  
2011 ◽  
Vol 113 (5) ◽  
pp. 10-15
Author(s):  
Erik Schneider ◽  
Frank Fickel ◽  
Bernd Cebulski ◽  
Jens Liebold
Keyword(s):  
Electric Vehicles ◽  
Electric Drive ◽  
Drive Unit

Scalable Electric Drive Unit for Multifunctional Vehicles

2020 ◽  
Vol 13 (4) ◽  
pp. 48-53
Author(s):  
Markus Merkel ◽  
Friedrich Mäckle ◽  
Norbert Schmidt ◽  
Sebastian Reusch
Keyword(s):  
Electric Drive ◽  
Drive Unit

An Innovative Solution for Type Testing of Power Transformers

2019 ◽  
Vol 20 (1) ◽  
Author(s):  
Manohar Singh ◽  
Vishnuvarddhan Telukanta ◽  
K S Meera
Keyword(s):  
Power Transformer ◽  
Short Circuit ◽  
Operating Conditions ◽  
Power Transformers ◽  
Test Facility ◽  
Online Testing ◽  
Testing Laboratory ◽  
Power Testing ◽  
Grid Operation ◽  
The Impact

Abstract Type tests are essential to assess the short circuit withstand capabilities of transformer windings. The mechanical durability of power equipment are checked against the mechanical forces developed during making/breaking short circuit operations. These type tests are generally carried out in indoor transformer test laboratories. Testing of Power Transformer for size more than 200 MVA in 765/400 kV voltage class in an indoor laboratory is not economically feasible. Now a days, power transformer manufacturers are fabricating single phase auto- power transformers of size up to 630 megawatt volt ampere (MVA) rating. Type testing of these transformers in indoor laboratories is not feasible. In view of this, strong short circuit fault feeding capabilities of the national grids can be utilized for type testing of these power transformers in an online manner. However, this may affect the grid operation/control during weak grid operating conditions. Recently, National High Power Testing Laboratory is established for testing of power transformer upto of 630 MVA. This is a unique online transformer test facility for testing of 765/400/220/132 kV class power transformers. An offline simulation has been carried out in this article, to assess the impact of online type testing on the Indian National grid. In this article, an online testing scheme has been presented which enables the national grid operator to analysis the prevailing grid condition & subsequently to decide the safe rating of the power transformer for online testing. The simulated results are cross checked with field results and it is found that simulated results are close to actual field results. The concurrence of simulated and field results helped in successfully commissioning of the testing laboratory.

Switckgear and Control Features of Enlarged High-Power Testing Laboratory

1963 ◽  
Vol 82 (67) ◽  
pp. 521-527 ◽  
Author(s):  
W. Batten ◽  
R. Baumgartner ◽  
G. Champney ◽  
W. Fish ◽  
J. Walker
Keyword(s):  
High Power ◽  
Testing Laboratory ◽  
Power Testing ◽  
And Control
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