Results 111 to 120 of about 38,135 (277)

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

Determining impact angle from the spatial distribution of shock metamorphism: A case study of the Gosses Bluff (Tnorala) impact structure, Australia

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract The majority of planetary impacts occur at oblique angles. Impact structures on Earth are commonly eroded or buried, rendering the identification of the direction and angle of impact—using methods such as asymmetries in ejecta distribution, surface topographic expression, central uplift structure, and geophysical anomalies—challenging. In this
Eloise E. Matthews   +5 more
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

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

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

The Downward Spiral of Legitimacy Erosion: Lessons on Network Governance Failure During the German “Refugee Crisis”

open access: yesPublic Administration Review, EarlyView.
ABSTRACT Organizational legitimacy is essential for effective crisis governance. This study analyzes the rapid erosion of legitimacy faced by the German State Office for Health and Social Affairs (LAGeSo) during the 2015 refugee crisis, triggering cascading failures in public service delivery.
Iris Seidemann   +2 more
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

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

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