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Unitsky String Technologies Inc.
220089, Republic of Belarus, Minsk,
st. Zheleznodorozhnaya, 33
Phone +375 (17) 388 20 20
Fax +375 (17) 388 06 06
e-mail: info@unitsky.com
222838, Republic of Belarus,
Minsk region, Pukhovichi district,
35 Novosyolki Rural Council,
Zorny Shlyakh St. area,
Maryina Gorka
The minimum traffic interval is based on the applicable requirements that ensure a necessary level of safety. On the one hand, by the on-line traffic speed, and on the other hand, by the length of the station platform and the time of embarkation and disembarkation of passengers. For single uPods this interval is 25-30 seconds. uPods that are electronically coupled in a train can leave the station one after another with a minimum interval of 2-3 seconds (this is, for example, the interval of cars on the autobahn).
uST Transport & Infrastructure Complex can operate 24/7 on intercity lines (as on railroad) and 20/7 on city lines (as in subway).
Yes, they are GoA4 in the grade of automation (IEC 62290‐1) — unmanned, with central control.
uPods can be located both in special holding stations (“parking lots”) and on the spare lines of stations and depots (depending on the performance of uST Transport & Infrastructure Complex). During off-peak hours, electric rail cars, if necessary, are removed from the line with the help of appropriate infrastructure components and placed in special holding stations or in service and repair areas.
There are no structural limitation, and the only one is the vertical curvature radius of the track over the support, which determines centrifugal accelerations (no more than 1 m/s2), and thus the comfort for passengers when passing a support. For instance, for a speed of 500 km/h, both horizontal and vertical track curvature radii (including on supports) must be at least 20,000 meters. The combination of structural solutions in uST string rail overpass and rolling stock includes the support saddle, high bending stiffness of the track structure, highly tensioned holding rope, and pneumatic suspension of the wheels, which ensures any required traveling smoothness of uPods, including when passing a support. If necessary, the support section can have reverse curvature of the track (concave curve with bending in the middle of a span), that is the passenger not only will not feel overloads, but on the contrary, his weight will decrease to some extent when passing a support.
Unfortunately, you cannot be 100% sure to guarantee that any component will not fail. However, so far, we have not yet recorded a single malfunction in power supply. The onboard traction electric drive is equipped with a mature cooling system that has independent loops, the products are tested in climatic chamber, the tropical uCar has been successfully operated in the UAE for more than three years already.
We should also highlight that a failure of the traction power supply (e.g., electric substation) will not stop the traffic on the line. Even a failed part of the electric drive system won’t stop the complex, as each system in it is duplicated. Besides, if there are any power supply problems on rails, the onboard emergency battery of uPod will produce enough power for at least 100 km of journey.
Yes, uPod can move at the same speed in reverse direction as a shuttle. The movement direction of the rolling stock is determined by the design of the undercarriage, suspension systems, traction electric drive control systems and the external contours of the body. The main types of uPods will be operated without any reference to directionality, as this solution is universal, which also allows reducing the operating costs. At the same time, of course, there are also solutions with unidirectional movement, which is a priority in a number of projects, especially with large passenger and cargo flows.
uST Transport & Infrastructure Complex can be designed both for operation in freezing climate (down to -60 °C) and for in tropical conditions (+50 °C with extension of operating temperature up to +55 °C).
Today, string transport is operated both in temperate climate (the bottom temperature limit is -40 °C in Belarus) and in the tropics (up to +55 °C in the UAE).
As for rainfall, uPods are undergo sprinkling tests with rainfall intensity of at least 2-3 mm per minute, which corresponds to a heavy tropical downpour.
Humidity is up to 100% inclusive under appropriate conditions of the climatic region.
Wind stability for the complex to operate in a standard version is 90 km/h (25 m/s). Anything higher — up to 250 km/h (70 m/s) — is possible in a special version based on customer requirements.
Probably. Our uPods are prepared and already operated in harsh conditions, including sandstorms, in Sharjah (UAE). The possibility of operation is ensured by a number of structural solutions in the infrastructure components of the string rail overpass, rolling stock, including a mature filtration system and installation of various cleaning systems. Such systems include, for example, a device to clean the rolling surface of the rail from stuck sand or the traction module blowing system.
