Lift is a mechanical aerodynamic force produced by the motion of an object through the air. Because lift is a force, it is a vector quantity, having both a magnitude and a direction associated with ...it. Drag is a mechanical aerodynamic force produced by the motion of an object through the air. Because drag is a force, it is a vector quantity, having both a magnitude and a direction associated with it. ...we need to address airflow separation, and airflow attachment. The effect is something similar to a spinning propeller rotor of a helicopter. Since for one half of the rotation the blade produce more lift because they spin in with the direction of flight, they have more air and a higher speed delta, thus producing more lift. ...there will be discrepancies even when using the measuring methodology and replicating the results exactly.
...the reason why the scooter is benefiting from this feature is the fact that according to Newton's fourth law, there is basically no difference between a system that is stationary to one that is ...moving at a constant speed. ...if the scooter only needs to keep a constant speed, rather than accelerating, the impact of the electric motors over the battery will be minimal, increasing therefore the range. The scooter presented here makes no such compromises, by relying on a simple yet robust design, mated to the latest technologies. ...the scooter will be able to be folded and put in a backpack, to be used anywhere from the floor of an airport to a forest track (fig. 22 - 28). ...the same web space will be able to house the ability to purchase various parts required to make the scooter (fig. 29). ...even if very little money is paid at first, the experience does not need to stay the same, by being able to change any aspect of the scooter according to your preference. ...modularity will make the scooter very desirable for mass use due to the modular design, which based on the partners willing to work with the manufacturer of the scooter will allow to almost limitless configurations and in turn increase the amount the users of the system (college students, urban commuters, factory and airport employees) will adopt it.
...during concept development, an evaluation of these concept variants is proposed, based on technical and economic criteria. According to the use- value analysis method, objective values are scored ...from 0 to 10 points. 4.3 Determining overall value The following overall value is used to evaluate solutions: a) the unweighted overall value for all objective sizes: ... The optimal solution is considered to have the maximum overall values, in our case variant 3. Because the evaluation was made for variants of which three are in the concept phase (Hyundai Ioniq scooter is still a prototype not introduced in serial production - launched in 2017), the price was not entered as a differentiating element in the evaluation matrix. ...the concept proposed by the authors is a new one due to the use of several multifunctional components and folding capacity in a compact volume of small size, the use of space being done in a very efficient manner.
PICTOGRAM LANGUAGE Pascu, Nicoleta-Elisabeta; Adir, Victor; Adir, George ...
Journal of Industrial Design and Engineering Graphics,
10/2018, Volume:
13, Issue:
1
Journal Article
Open access
A pictogram is a special graphic element which is in charge to solve the problem of a good communication between people all over the world 1. CASE STUDY 5.1 Pictograms for the Engineering Graphics ...and Industrial Design Department It was an exercise for us to design pictograms for the building where is our Engineering Graphics and Industrial Design Department. In our research study we have realized a signage system (it is about a signage map which is not included in this paper) for the hospital using a colour code too.
The golf ball is a very interesting aerodynamic device. As a sphere, the coefficient of drag should be about 0.48. However, because of the surface of the golf ball, the drag coefficient can be much ...lower, up to 12%. This paper explores the multitude of ways, designs and concepts that create such a lower drag coefficient, through computational fluid dynamics analysis, and using those findings how to use them when designing new parts to increase the efficiency and reliability of the device that uses said parts while increasing the quality of life of the user of the devices.
The golf ball is a very interesting aerodynamic device. As a sphere, the coefficient of drag should be about 0.48. However, because of the surface of the golf ball, the drag coefficient can be much ...lower, up to 12%. This paper explores the multitude of ways, designs and concepts that create such a lower drag coefficient, through computational fluid dynamics analysis, and using those findings how to use them when designing new parts to increase the efficiency and reliability of the device that uses said parts while increasing the quality of life of the user of the devices.
It can be observed that today we live in a hectic environment, filled with lots of strict deadlines which we are obliged to meet by society standards. Today we have to be in a place at ten a.m. and ...one kilometer away at 10:05. Transportation is probably one of the most essential instruments of our success in modern society, and fits in the same category as skill. In this idea, the paper develops the design of an electric scooter having mechanisms used to improve the transportation and storage characteristics, and in the end the best solution will be proposed. There will also be presented some design ideas of three constructive solutions iteratively refined.
The paper develops the conceptual design of a lightweight electric scooter with high pliability and portability characteristics. Primarily, the paper focuses on the development and virtual ...representation of the scooter concept through iterative improvements and the elimination of the weaknesses of design of the previous solution. After three successive iterations a final version is obtained that fully meets the requirements list. Secondly, during concept development, an evaluation of these concept variants is proposed, based on technical and economic criteria. Finally, a positioning matrix of the proposed product is obtained in relation to existing products on the market. A discussion of solutions based on the requirements list is offered also. Several conclusions distinguish the main points and results of the paper.
The paper develops the conceptual design of a lightweight electric scooter with high pliability and portability characteristics. Primarily, the paper focuses on the development and virtual ...representation of the scooter concept through iterative improvements and the elimination of the weaknesses of design of the previous solution. After three successive iterations a final version is obtained that fully meets the requirements list. Secondly, during concept development, an evaluation of these concept variants is proposed, based on technical and economic criteria. Finally, a positioning matrix of the proposed product is obtained in relation to existing products on the market. A discussion of solutions based on the requirements list is offered also. Several conclusions distinguish the main points and results of the paper.
It can be observed that today we live in a hectic environment, filled with lots of strict deadlines which we are obliged to meet by society standards. Today we have to be in a place at ten a.m. and ...one kilometer away at 10:05. Transportation is probably one of the most essential instruments of our success in modern society, and fits in the same category as skill. In this idea, the paper develops the design of an electric scooter having mechanisms used to improve the transportation and storage characteristics, and in the end the best solution will be proposed. There will also be presented some design ideas of three constructive solutions iteratively refined.
