Successful Development of the Long-Test-Duration Hypervelocity Detonation-Driven Shock Tunnel

2015 ◽  
pp. 51-58
Author(s):  
Z. L. Jiang ◽  
H. R. Yu
Keyword(s):  
Shock Tunnel ◽  
Test Duration ◽  
Successful Development

Aerodynamic Drag Measurement in a High-Enthalpy Shock Tunnel

2018 ◽  
Author(s):  
Yunpeng Wang ◽  
Zonglin Jiang ◽  
Honghui Teng
Keyword(s):  
Natural Frequencies ◽  
Aerodynamic Drag ◽  
Aerodynamic Force ◽  
Mechanical Vibration ◽  
Low Frequency ◽  
Shock Tunnel ◽  
Test Time ◽  
Test Duration ◽  
Flow State ◽  
High Enthalpy

Shock tunnels create very high temperature and pressure in the nozzle plenum and flight velocities up to Mach 20 can be simulated for aerodynamic testing of chemically reacting flows. However, this application is limited due to milliseconds of its test duration (generally 500 μs–20 ms). For the force test in the conventional hypersonic shock tunnel, because of the instantaneous flowfield and the short test time [1–4], the mechanical vibration of the model-balance-support (MBS) system occurs and cannot be damped during a shock tunnel run. The inertial forces lead to low frequency vibrations of the model and its motion cannot be addressed through digital filtering. This implies restriction on the model’s size and mass as its natural frequencies are inversely proportional the length scale of the model. As to the MBS system, sometimes, the lowest natural frequency of 1 kHz is required for the test time of typically 5 ms in order to get better measurement results [2]. The higher the natural frequencies, the better the justification for the neglected acceleration compensation. However, that is very harsh conditions to design a high-stiffness MBS structure, particularly a drag balance. Therefore, it is very hard to carried out the aerodynamic force test using traditional wind tunnel balances in the shock tunnel, though its test flow state with the high-enthalpy is closer to the real flight condition.

scholarly journals Force measurement using strain-gauge balance in a shock tunnel with long test duration

2016 ◽  
Vol 87 (5) ◽  
pp. 055108 ◽  
Author(s):  
Yunpeng Wang ◽  
Yunfeng Liu ◽  
Changtong Luo ◽  
Zonglin Jiang
Keyword(s):  
Strain Gauge ◽  
Force Measurement ◽  
Shock Tunnel ◽  
Test Duration

Formation of financial literacy in training of informatics teachers on the basis of the 1С:Enterprise system

2020 ◽  
Vol 1 (1) ◽  
pp. 11-18
Author(s):  
M. A. Rodionov ◽  
I. V. Akimova
Keyword(s):  
Financial Literacy ◽  
Basic Knowledge ◽  
State University ◽  
Science And Literature ◽  
Successful Development ◽  
Mathematics History ◽  
School Subjects ◽  
Personal Finances ◽  
The Right

In the submitted study the problem of the formation of financial literacy of students at informatics lessons and relevant training of future informatics teachers is considered. Financial literacy is understood as a set of basic knowledge in the field of finance, banking, insurance, as well as budgeting for personal finances that allow a person to choose the right financial product or service, soberly assess and take risks that may arise during the use of these products, correctly accumulate savings and identify doubtful (fraudulent) investment schemes. The authors conclude that successful development of meaningful lines of the course of financial literacy requires integration of a few school subjects, such as mathematics, history, informatics, social science and literature. The role of modern informatics teacher in the formation of financial literacy of students is great. Therefore, in the training of a future informatics teacher, it should be paid the attention to issues related to the study of elements of financial literacy in informatics lessons. In order to solve the problem, the authors propose to use the special course “Basics of work in 1С:Enterprise”, which is implemented at Penza State University. The article contains a program of the course and the methodological recommendations for its implementation.

Critical Success Factors in Russian R&D Projects in the Real Economy

2010 ◽  
pp. 41-61
Author(s):  
V. Andreev
Keyword(s):  
Empirical Research ◽  
Critical Success Factors ◽  
Success Factors ◽  
Innovation Process ◽  
Real Economy ◽  
Key Factors ◽  
Industrial Products ◽  
Successful Development ◽  
The Real ◽  
Critical Success

The article discusses the concept of "success" in relation to innovative business and its performance. The quantity of innovative projects that can consistently overcome the stages of the innovation process to achieve the desired result is defined. The author presents the results of empirical research of successful and unsuccessful projects of leading Russian innovative companies in various industries, identifies key factors of successful development of new industrial products.

ENRICHING MEDIA MERCHANDISE SARANA PENUNJANG PROMOSI STUDI KASUS PADA BOOKSTORE

CCIT Journal ◽  
2014 ◽  
Vol 7 (3) ◽  
pp. 420-436
Author(s):  
Dewi Immaniar ◽  
Sudaryono Sudaryono ◽  
Ayu Ningrum
Keyword(s):  
Visual Media ◽  
Test Duration ◽  
Media Campaign ◽  
Business World ◽  
Retail Business ◽  
The Media ◽  
Media Types ◽  
The Times ◽  
A Company

Talk about retail business can not be separated from the importance of service to consumers and good quality goods . But at the present time due to intense competition in the business world , the service and quality of goods is not enough to be able to increase revenue and attract customers loyal . This makes companies think hard to survive and stable in the business . One of them is by using a media campaign in this regard more toward print or visual media is indirectly felt the value of their effectiveness in communicating product marketing programs . PT . Times Prima Indonesia is a company engaged in the retail book with the name of the Times bookstores . Based on the analysis of the company’s problems requires additional media types supporting more varied and creatif promotion of existing ones, which will be used as a complement and a media campaign as well as to enrich the data renewal campaign design to capture the interest of consumers in which one form of the media campaign is shaped merchandise . Therefore , do Enriching ( enrich ) media campaign merchandise before it is less varied and has not formed a company image . The methodology used is the analysis, observation and design . Besides the new design has been tested with the implemented test duration for 6 months, and greatly increases the perceived contribution , this is evidenced by the chart sales increasing each month.

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