Results 121 to 130 of about 38,137 (264)

A survey of structural dynamics of solid propellant rocket motors [PDF]

open access: yes
Structural dynamics survey for solid propellant rocket ...
Baltrukonis, J. H.
core   +1 more source

Past and Present Large Solid Rocket Motor Test Capabilities [PDF]

open access: yes, 2011
A study was performed to identify the current and historical trends in the capability of solid rocket motor testing in the United States. The study focused on test positions capable of testing solid rocket motors of at least 10,000 lbf thrust.
Kowalski, Robert R., Owen, David B., II
core   +1 more source

Wartime Leadership as a Bridge Over Troubled Waters: A Representative Bureaucracy Perspective on Ethnically Homogeneous and Heterogeneous Schools

open access: yesPublic Administration, EarlyView.
ABSTRACT The representative bureaucracy literature asserts that minority personnel in public organizations can promote their social group either through their own behavior or by influencing other staff members or focal citizens. However, these phenomena have not been examined in wartime settings in ethnically homogeneous and heterogeneous organizations.
Maayan Davidovitz, Chen Schechter
wiley   +1 more source

Performance of a UTC FW-4S solid propellant rocket motor under the command effects of simulated altitude and rotational spin [PDF]

open access: yes
One United Technology Center FW-4S solid-propellant rocket motor was fired at an average simulated altitude of 103,000 ft while spinning about its axial centerline at 180 rpm. The objectives of the test program were to determine motor altitude ballistic
Merryman, H. L., Smith, L. R.
core   +1 more source

Noisy Politics, Quiet Technocrats: Strategic Silence by Central Banks

open access: yesRegulation &Governance, EarlyView.
ABSTRACT In contrast to the “quiet” politics of the pre‐2008 period, macroeconomic policy has become “noisy”. This break raises a question: How do independent agencies designed for quiet politics react when a contentious public turns the volume up on them?
Benjamin Braun, Maximilian Düsterhöft
wiley   +1 more source

SRB Environment Evaluation and Analysis. Volume 3: ASRB Plume Induced Environments [PDF]

open access: yes
Contract NAS8-37891 was expanded in late 1989 to initiate analysis of Shuttle plume induced environments as a result of the substitution of the Advanced Solid Rocket Booster (ASRB) for the Redesigned Solid Rocket Booster (RSRB). To support this analysis,
Bender, R. L.   +6 more
core   +1 more source

Measurement and Characterization of Space Shuttle Solid Rocket Motor Plume Acoustics [PDF]

open access: yes, 2009
Lift-off acoustic environments generated by the future Ares I launch vehicle are assessed by the NASA Marshall Space Flight Center (MSFC) acoustics team using several prediction tools.
Hobbs, Chris   +3 more
core   +1 more source

Unveiling Lasting Impact: A Cultural‐Historical Activity Theory Perspective on Original Participants in an Afterschool STEM Club

open access: yesSchool 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

Bond Assembly FOD Zones - A Procedure for Assuring Acceptable Adhesion [PDF]

open access: yes, 2009
Rocket motor components are primarily assembled by adhesion. a) For example, the RSRM (Reusable Solid Rocket Motor - part of the Space Shuttle Boosters) system contains 10,000 sq ft of bondline area.
Evans, Kurt   +2 more
core   +1 more source

Drawing Animals in the Paleolithic: The Effect of Perspective and Abbreviation on Animal Recognition and Aesthetic Appreciation

open access: yesTopics in Cognitive Science, EarlyView.
Abstract The majority of Pleistocene figurative cave art in Western Europe consists of line drawings depicting large herbivores from the side view, and outlines were sometimes abbreviated to the head‐neck‐dorsal line. It is often assumed that the side view was used because it facilitates animal recognition compared to other views, and that abbreviated ...
Murillo Pagnotta   +4 more
wiley   +1 more source

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