Results 161 to 170 of about 66,597 (309)
Advanced Earth-to-orbit propulsion technology program overview: Impact of civil space technology initiative [PDF]
The NASA Earth-to-Orbit (ETO) Propulsion Technology Program is dedicated to advancing rocket engine technologies for the development of fully reusable engine systems that will enable space transportation systems to achieve low cost, routine access to ...
Stephenson, Frank W., Jr.
core +1 more source
Alloparenting the investment child: A reply to responses
The British Journal of Sociology, EarlyView.
Nina Bandelj
wiley +1 more source
Integrated STEM conceptualizations among teachers following a professional development program
School Science and Mathematics, EarlyView.Abstract Because teachers are now more often expected to develop integrated STEM lessons, it is essential to understand their conceptualizations to be able to support them effectively. This qualitative study explored teachers' integrated STEM conceptualizations upon participation in an engineering‐focused professional development program of 4 days ...
Canan Mesutoglu, Devrim Akgündüz
wiley +1 more source
The Applications Technology Satellite apogee rocket motor - A summary report [PDF]
Design, testing, and development of solid propellant rocket engine for orbital transfer of Applications Technology ...
Anderson, R. G.
core +1 more source
School Science and Mathematics, EarlyView.ABSTRACT Engineering has emerged as a promising context for STEM integration in K‐12 schools. In the previous decade, the field has seen an increase in curricular resources and pedagogical approaches that invite students to utilize mathematics and science as they engage in engineering practices.
Jessica Gale +6 more
wiley +1 more source
Historical problem areas lessons learned [PDF]
Historical problem areas in space transportation propulsion technology are identified in viewgraph form. Problem areas discussed include materials compatibility, contamination, pneumatic/feed system flow instabilities, instabilities in rocket engine ...
Fester, Dale A., Sackheim, Bob
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School Science and Mathematics, EarlyView.ABSTRACT The Girls Excelling in Math and Science (GEMS) club is a long‐standing afterschool STEM program (1994–present). The study investigates the features of GEMS by exploring retrospective experiences of a group of original GEMS girls (OGGs) who attended GEMS in 1994–1995. Survey data were collected from 14 OGGs and in‐depth interview data from nine
Lili Zhou
wiley +1 more source
Second 260-Inch Solid Motor Set for Test Firing [PDF]
Second 260-inch diameter solid propellant rocket engine set for test ...
core +1 more source
Liquid rocket performance computer model with distributed energy release Interim final report, 15 Aug. 1969 - 15 Aug. 1970 [PDF]
Liquid propellant rocket engine performance computer program with distributed energy ...
Campell, D. T. +2 more
core +1 more source