AUTONOMOUS HEAT SUPPORT SYSTEM OF ELECTRONIC BLOCKS OF SPACE APPLIANCES

2018 ◽  
pp. 72-78
Author(s):  
A. V. Gorbunov ◽  
Yu. A. Zhukov ◽  
E. V. Korotkov ◽  
A. V. Lekanov ◽  
V. G. Porpylev ◽  
...  
Keyword(s):  
Thermal Regime ◽  
Autonomous System ◽  
Supply Voltage ◽  
Operating Temperature ◽  
Electronic Devices ◽  
Space Technology ◽  
Structural Scheme ◽  
Spacecraft Design ◽  
Temperature Controlled ◽  
Operating Temperature Range

The vast majority of electronic devices on-Board Russian spacecraft is placed on a temperature-controlled mounting surface is ON, however, in some tasks there is a necessity to place a separate electronic units out thermostated panels on remote spacecraft design. The article presents an autonomous system of providing thermal regime of electronic blocks of spacecraft and objects of space technology that require maintaining the operating temperature and are unable to be installed on the thermostatic landing surfaces of spacecraft. The proposed autonomous system of providing thermal regime can operate autonomously in the extended operating temperature range of the installation surface from -80 to +80 °C when the supply voltage changes in the range from 75 to 550% of the nominal value. The review of the existing solutions is presented, the substantiation of the proposed decision is given, the structural scheme of autonomous system of providing thermal regime is given and its description and an example of application is given.

MAR-M Alloy 246

Alloy Digest ◽  
1968 ◽  
Vol 17 (6) ◽  
Keyword(s):  
Precipitation Hardening ◽  
Operating Temperature ◽  
Rupture Strength ◽  
Base Alloy ◽  
Heat Treating ◽  
Solid Solution Strengthening ◽  
Temperature Performance ◽  
Solution Strengthening ◽  
Nickel Base ◽  
Operating Temperature Range

Abstract MAR-M alloy 246 is a vacuum-cast nickel-base alloy combining precipitation hardening and solid solution strengthening. It has high rupture strength and adequate ductility in the recommended operating temperature range of 1200-1900 F. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness and creep. It also includes information on high temperature performance and corrosion resistance as well as casting, heat treating, machining, joining, and surface treatment. Filing Code: Ni-134. Producer or source: Martin Metals Division.

High performance shape memory effect in nitinol wire for actuators with increased operating temperature range

2014 ◽  
Vol 07 (05) ◽  
pp. 1450063 ◽  
Author(s):  
Riccardo Casati ◽  
Carlo Alberto Biffi ◽  
Maurizio Vedani ◽  
Ausonio Tuissi
Keyword(s):  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
High Performance ◽  
Room Temperature ◽  
Operating Temperature ◽  
Niti Wire ◽  
Shape Memory Actuators ◽  
Nitinol Wire ◽  
Operating Temperature Range

In this research, the high performance shape memory effect (HP-SME) is experimented on a shape memory NiTi wire, with austenite finish temperature higher than room temperature. The HP-SME consists in the thermal cycling of stress induced martensite and it allows achieving mechanical work higher than that produced by conventional shape memory actuators based on the heating/cooling of detwinned martensite. The Nitinol wire was able to recover about 5.5% of deformation under a stress of 600 MPa and to withstand about 5000 cycles before failure. HP-SME path increased the operating temperature of the shape memory actuator wire. Functioning temperatures higher than 100°C was reached.

Design and operational considerations of educational satellite systems

1975 ◽  
Vol 345 (1643) ◽  
pp. 477-491
Keyword(s):  
Educational System ◽  
Space Technology ◽  
Critical Aspect ◽  
System Operation ◽  
Spacecraft Design ◽  
Satellite Systems ◽  
Educational Programmes ◽  
Effective System ◽  
Video Systems ◽  
Relationship Of

This paper considers those aspects of space technology which must be brought together into a system to carry educational programmes. The required levels of technology are achievable, but in such systems the space sector cost is much less than that of the ground sector, and an economic and effective system must optimize the spacecraft design in conjunction with the ground transmitters and particularly the large number of receiving stations. The implications of hybrid video systems are examined, incorporating fixed picture presentations, thus economizing on band-width demands, as alternatives to the use of normal television. A critical aspect of the educational system operation is likely to be the production of the software comprising the programmes. The implications of, and requirements for, these are discussed. Finally, the technical and logistic operational problems of a typical system are explored, emphasizing the critical relationship of design and serviceability of all elements of the system, and indicating the importance of planning adequate servicing and operational facilities.

scholarly journals Reference Voltage Supply Source with Expanded Operating Temperature Range

2018 ◽  
Vol 3 (6) ◽  
pp. 213
Author(s):  
A V Popova ◽  
V M Kisel ◽  
A Yu Malyavina ◽  
A S Bakerenkov ◽  
Yu R Shaltaeva
Keyword(s):  
Operating Temperature ◽  
Reference Voltage ◽  
Supply Source ◽  
Voltage Supply ◽  
Temperature Range ◽  
Operating Temperature Range

.

Preparation and Thermal Properties of High-Purified Molten Nitrate Salt Materials with Heat Transfer and Storage

2015 ◽  
Vol 34 (8) ◽  
Author(s):  
Hongtao Zhang ◽  
Youjing Zhao ◽  
Jingli Li ◽  
Lijie Shi ◽  
Min Wang
Keyword(s):  
Heat Transfer ◽  
Thermal Stability ◽  
Thermal Properties ◽  
Molten Salts ◽  
Operating Temperature ◽  
Nitrate Salt ◽  
Solar Salt ◽  
And Storage ◽  
Thermal Stability Of ◽  
Operating Temperature Range

AbstractThis paper focuses on thermal stability of molten salts, operating temperature range and latent heat of molten salts at a high temperature. In this experiment, multi-component molten salts (purified Solar Salt) composed of purified NaNO

Optimal Design of Energy-Saving Induction Cooker Power Controller Based on Fuzzy Technology

2014 ◽  
Vol 678 ◽  
pp. 423-428
Author(s):  
Pin Qi Zheng ◽  
Qing Sheng Yu
Keyword(s):  
Fuzzy Control ◽  
Output Power ◽  
Power Supply ◽  
Supply Voltage ◽  
Operating Temperature ◽  
Voltage Regulation ◽  
Soft Switching ◽  
Switch Mode ◽  
Output Efficiency ◽  
Switch Voltage

Application of Soft-switching technique and fuzzy control is discussed to optimize traditional induction cooker controller. Soft-switching technique is used to improve output efficiency of induction cooker. Switch voltage regulation by fuzzy control are used to adjust output power of induction cooker. Soft-switching inverter consists of resonant DC link and LC resonant network. Resonant DC link is used to realize ZVS, and resonant network is used to eliminate harmonics. Fuzzy control based on look-up table is adopted to adjust duty cycle of switch mode regulated power supply, which changes the DC supply voltage, so that amplitude of AC signal inverted by induction cooker is changed to adjust output power of induction cooker according to the requirement, , ensuring the operating temperature aligned with the target temperature.

Research on Nozzle Array Structure Fluidic Gyroscope Zero Temperature Compensation

2012 ◽  
Vol 542-543 ◽  
pp. 631-634
Author(s):  
Xing Wang ◽  
Lin Hua Piao ◽  
Quan Gang Yu
Keyword(s):  
Temperature Compensation ◽  
Operating Temperature ◽  
Temperature Characteristic ◽  
Zero Drift ◽  
Zero Temperature ◽  
Single Chip ◽  
Temperature Range ◽  
Compensation Methods ◽  
Array Structure ◽  
Operating Temperature Range

The nozzle array structure fluidic gyroscope’s zero temperature compensation was researched. The fluidic gyroscope’s temperature characteristic was analyzed in the sensitive element and two zero temperature compensation methods were compared. Then, the software compensation method was used, which based on the Single chip microcomputer technology and realized temperature compensation for the gyroscope output signal. The results show that after the compensation, the gyroscope’s zero drift decreases from ≤1.3mV/°C to ≤0.1mV/°C and operating temperature range increases from normal temperature to -40°C~+60°C. Therefore, the fluidic gyroscope has the advantage of low zero drift and width operating temperature range after the zero temperature compensation, which provides the convenience for the production and application.

A Flexible and Safe Aqueous Zinc–Air Battery with a Wide Operating Temperature Range from −20 to 70 °C

2020 ◽  
Vol 8 (31) ◽  
pp. 11501-11511 ◽  
Author(s):  
Rui Chen ◽  
Xiubin Xu ◽  
Siyu Peng ◽  
Junmin Chen ◽  
Danfeng Yu ◽  
...  
Keyword(s):  
Operating Temperature ◽  
Temperature Range ◽  
Air Battery ◽  
Wide Operating ◽  
Operating Temperature Range

Excellent performance of highly conductive porous Na-embedded carbon nanowalls for electric double-layer capacitors with a wide operating temperature range

2017 ◽  
Vol 5 (19) ◽  
pp. 9090-9096 ◽  
Author(s):  
Liang Chang ◽  
Wei Wei ◽  
Kai Sun ◽  
Yun Hang Hu
Keyword(s):  
Double Layer ◽  
Electric Double Layer ◽  
Operating Temperature ◽  
Excellent Performance ◽  
Temperature Range ◽  
Areal Capacitance ◽  
Carbon Nanowalls ◽  
Double Layer Capacitors ◽  
Wide Operating ◽  
Operating Temperature Range

Na@C electrodes can operate from −10 to 55 °C and exhibit an ultrahigh areal capacitance up to 1.14 F cm−2.

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