Rocket engine design and development methodology

1985 ◽  
Author(s):  
H. GIBSON
1981 ◽  
Author(s):  
J. F. Macura ◽  
J. C. Gagliardi ◽  
J. G. Quick ◽  
J. A. Howard ◽  
W. Hirsch

2013 ◽  
Author(s):  
Yi-Hsin Chen ◽  
William Resh ◽  
Hong Geng ◽  
Simon Shi ◽  
Jaspal Sandhu ◽  
...  

2019 ◽  
Vol 16 (2(SI)) ◽  
pp. 0462 ◽  
Author(s):  
Katuk Et al.

Research in consumer science has proven that grocery shopping is a complex and distressing process. Further, the task of generating the grocery lists for the grocery shopping is always undervalued as the effort and time took to create and manage the grocery lists are unseen and unrecognized. Even though grocery lists represent consumers’ purchase intention, research pertaining the grocery lists does not get much attention from researchers; therefore, limited studies about the topic are found in the literature. Hence, this study aims at bridging the gap by designing and developing a mobile app (application) for creating and managing grocery lists using modern smartphones. Smartphones are pervasive and become a necessity for everyone today. Hence, a smartphone app that can facilitate the process of creating and managing grocery lists for busy and working people is beneficial. The design and development of the app followed the rapid application development methodology. First, the functional requirements were gathered through interviews and content analysis. Then, a prototype named SMART LIST has been developed based on the gathered requirements, and a field study was carried out to evaluate the usability of the prototype. The results of the evaluation suggested that SMART LIST is useful and easy to use. The respondents also satisfied with the functions for managing grocery lists offered by SMART LIST. The study contributes towards an understanding the system requirements and user interface of a mobile app for managing grocery list. It can be a reference model for developers and researchers in the area to develop similar apps or enhancing the capabilities in creating and managing grocery lists.


1939 ◽  
Vol 43 (347) ◽  
pp. 837-874
Author(s):  
J. E. Ellor ◽  
F. M. Owner

The subject of the carburettor as opposed t o fuel injection is one which has created much controversy in aero engine design and development. Current opinions both in this country and abroad are many and varied and it would be presumptuous to forecast which will eventually predominate. The object of this paper is to present an unbiased review in the hope of provoking a useful interchange of opinions and experiences.It might be argued that claims for one system can be countered by claims for the other and to be impartial it is necessary, therefore, to be familiar with as many facts and as much published information as possible. Owing to the meagre amount of information available on fuel injection, the paper is not as complete a review as the authors would wish, but it is hoped that sufficient material has been presented to be helpful to those who are interested in the subject.


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