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“At Some Point, You Just Run Out of Road”: Farmers' Concerns About the Future of Agriculture
Community Science, Volume 4, Issue 3, September 2025.Abstract While research exploring factors related to farmers' mental health has been conducted more extensively in the past decade, much of the published literature in this domain focuses on acute stress and mental health challenges, rather than long term worries of agricultural producers.
Noah Hopkins +3 more
wiley +1 more source
The needs of the designer of a solid core nuclear rocket engine are discussed. Some of the topics covered include: (1) a flight thrust module/feed system module assembly; (2) a nuclear thermal rocket (NTR), expander cycle, dual T/P; (3) turbopump ...
Gunn, Stanley
core +1 more source
Heterogeneous fuel for hybrid rocket [PDF]
, 1996 Heterogeneous fuel compositions suitable for use in hybrid rocket engines and solid-fuel ramjet engines, The compositions include mixtures of a continuous phase, which forms a solid matrix, and a dispersed phase permanently distributed therein.
Stickler, David B.
core +1 more source
Aerospace, 2019 The computational fluid dynamics of hybrid rocket internal ballistics is becoming a key tool for reducing the engine operation uncertainties and development cost as well as for improving experimental data analysis.
Giuseppe Daniele Di Martino +3 more
doaj +1 more source
Chemistry: Space resources for teachers including suggestions for classroom activities and laboratory experiments [PDF]
, 1971 Curriculum supplement to assist general chemistry teachers in updating instruction materials with aerospace ...
Bowman, W. H., Lawrence, R. M.
core +1 more source
Hybrid Rocket Engine Ignition and Control [PDF]
, 2020 Control of a hybrid rocket engine is dependent upon a robust system capable of executing commands at precise times. In order to accomplish this, hardware systems must be in place to control the flow of a pressurized gas and provide feedback to launch ...
Blampied, Trevor +3 more
core +1 more source
Diversity of design knowledge for launch vehicle in view of fuels on hybrid rocket engine
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2014 A single-stage launch vehicle with hybrid rocket engine, which uses solid fuel and liquid oxidizer, has been studied and developed as a next-generation rocket for scientific observation due to the advantages as low cost, safety, re-ignition, and reduced ...
Kazuhisa CHIBA +4 more
doaj +1 more source
Overview of Combustion Instabilities in Liquid-Propellant Rocket Engines [PDF]
, 1995 N/
Culick, Fred E. C., Yang, Vigor
core
Vibration characteristics of 1/8-scale dynamic models of the space-shuttle solid-rocket boosters [PDF]
Vibration tests and analyses of six 1/8 scale models of the space shuttle solid rocket boosters are reported. Natural vibration frequencies and mode shapes were obtained for these aluminum shell models having internal solid fuel configurations ...
Barret, J. R. +4 more
core +1 more source
, 1964 Space program - high thrust boosters with greater payload capabilities, superior guidance and control, and astronaut ...
Dean, J. +4 more
core +1 more source