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Articles 121 - 150 of 1867
Full-Text Articles in Space Vehicles
Earth To Orbit: Three Models For Strengthening Space Deterrence, Anton Dahm
Earth To Orbit: Three Models For Strengthening Space Deterrence, Anton Dahm
Space and Defense
Nuclear, cyber, and integrated deterrence models hold lessons for space deterrence strategy, including declared thresholds, resilient space architecture, and the embrace of international competition in technological innovation.
The United States depends heavily on space capabilities, significantly more than any other country. Not only does space enable navigation, communications, environmental monitoring, and other vital capabilities, but space has also been described as the most essential warfighting domain. However, the U.S. space architecture mirrors its early days: relying on important, expensive payloads on a limited number of satellites. While providing important capabilities to U.S. decision-makers, kinetic and non-kinetic weapons can easily target …
The German Zeitenwende: Turning Point Or Blind Alley?, Savannah Hollen
The German Zeitenwende: Turning Point Or Blind Alley?, Savannah Hollen
Space and Defense
The Zeitenwende, or turning point, announced by Chancellor Olaf Scholz after Russia’s invasion of Ukraine in February 2022, may end up leaving Germany with few good defense policy options.
After Russia’s invasion of Ukraine in 2022, Germany vowed to change course, to expand and modernize its military, which for decades has been weak relative to the size of Europe’s leading economy. As bold as Germany’s declarations have been, German leaders may well have walked into a blind alley, unsure of exactly how Zeitenwende will happen, what the final results will be, or the consequences if they never come close to …
Strategic Space Cooperation: U.S. Space Command And The National Guard’S State Partnership Program, David Moore, Jesse Morehouse, Patrick Mitchell
Strategic Space Cooperation: U.S. Space Command And The National Guard’S State Partnership Program, David Moore, Jesse Morehouse, Patrick Mitchell
Space and Defense
In 2022, the U.S. Space Command (USSPACECOM) and the National Guard's State Partnership Program (SPP) began pursuing security cooperation objectives while integrating the space domain into greater deterrence efforts. As the newest combatant command (CCMD) with space as its Area of Responsibility (AOR), USSPACECOM has global strategic partnership interests and recognizes the value of the enduring relationships inherent in SPP. This cooperation allows the National Guard to offer its strong relationships, space expertise, and industry knowledge to USSPACECOM. This provides a foundation for USSPACECOM's security cooperation efforts. This article discusses the SPP's role in supporting USSPACECOM's engagement strategy and the …
Arms Control Optimism And Great Power Competition, Damon Coletta
Arms Control Optimism And Great Power Competition, Damon Coletta
Space and Defense
In its unjust war, Russia rakes at Ukrainian civilian targets using dual-capable missiles. China meanwhile tightens the screws on Taiwan as it cements its friendship with Russia and continues its buildup of strategic nuclear warheads.1 Conventional wisdom and U.S. policy under such tense conditions unduly discount expectations for arms control.2 Arms control, in the popular mind, centers on bans in testing or deployment, and is therefore terminally associated with disarmament. Trepidation about disarmament fuels assumptions in polarized democracy, and the United States in particular, about the narrow political conditions under which arms control can succeed during great power competition. Conventional …
Drone-Based, Boost-Phase Intercept Of North Korean Icbms, James D. Wells, William Priedhorsky, Frederick Lamb, Laura Grego
Drone-Based, Boost-Phase Intercept Of North Korean Icbms, James D. Wells, William Priedhorsky, Frederick Lamb, Laura Grego
Space and Defense
North Korea currently has an adversarial relationship with the United States and has successfully tested both nuclear weapons and intercontinental-range ballistic missiles (ICBMs) capable of striking the continental United States.1 There are several ways the United States could attempt to address the threat posed by North Korea’s nuclear-armed ICBMs. Historically, the United States has relied on a policy of projecting military strength, fostering strong alliances, and maintaining a credible threat of retaliation to deter adversaries, including those with nuclear weapons, from initiating hostilities. Some have argued that this approach has been instrumental in preventing conflict between nuclear-armed nations, including North …
A Premature Obituary For Conventional Deterrence, Jeffery S. Lehmkuhl
A Premature Obituary For Conventional Deterrence, Jeffery S. Lehmkuhl
Space and Defense
As the United States (US) continues to shift its weight of effort towards great power competition, some scholars and practitioners have questioned the relevance of conventional forces and their ability to deter. Chief among them is Sean McFate, who asserts that “conventional war is unicorn hunting” and that “no one fights that way anymore.”1 Jim Sciutto echoes McFate’s claims in his book The Shadow War and states that the US is losing to Russia and China in a new way of warfare that is conducted below the threshold of conventional warfare.2 Leading Russian General Valery Gerasimov furthered this claim when …
Nuclear Regimes In The 21st Century, Stephen J. Cimbala, Adam Lowther
Nuclear Regimes In The 21st Century, Stephen J. Cimbala, Adam Lowther
Space and Defense
The modern nuclear operations practitioner is facing a more complex future than at any point since the height of the Cold War. Understanding the past, present, and possible future of nuclear force structure and doctrine offers the policy maker a useful way to make sense of unfolding events and place them within a broader context. With China, Russia, and North Korea all posing a growing nuclear risk to the United States, a strong grasp on the available options for countering these threats is certainly important.
Editor's Note, Damon Coletta
Table Of Contents Vol. 15 No. 2
Space And Defense Vol. 15 No. 2 Fall 2024 (Whole Issue)
Space And Defense Vol. 15 No. 2 Fall 2024 (Whole Issue)
Space and Defense
No abstract provided.
Assessing General Propulsion Architectures For Fast Transit Times To Mars For Crewed Missions, Vivek Bhatt
Assessing General Propulsion Architectures For Fast Transit Times To Mars For Crewed Missions, Vivek Bhatt
Doctoral Dissertations and Master's Theses
As NASA and commercial contractors, such as SpaceX, continue to develop their programs with Artemis and Starship, respectively, it is becoming more and more apparent that the program developments are ultimately for finding a way to put humans onto Mars. However, when we approach the current timeline of going to Mars, it usually involves a 6-9 month one way trip. Due to this, human spaceflight to Mars becomes more dangerous as exposure to affects such as solar radiation, long exposure to low gravity fields, and isolation. These are some of the many hazards that come with interplanetary space travel for …
Notes For Contributors To Space & Defense
Front Matter, Damon Coletta
Understanding Orbits: Orbit Facts, Robert J. Twiggs
Understanding Orbits: Orbit Facts, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Professor Bob Twiggs titled "Understanding Orbits: Orbit Facts" from October 22, 2024.
Understanding Orbits: Just Enough To Make You Dangerous, Robert J. Twiggs
Understanding Orbits: Just Enough To Make You Dangerous, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Professor Bob Twiggs titled "Understanding Orbits: Just enough to make you dangerous" from October 22, 2024.
Ridds: Removal Of Irregular Debris Using Double Nets, Kayann Coote
Ridds: Removal Of Irregular Debris Using Double Nets, Kayann Coote
Doctoral Dissertations and Master's Theses
The quantity of debris in Earth’s orbit is increasing at an alarming rate, and without a sustainable solution, this will detriment the space environment, impacting the future of space travel and space traffic management. While numerous debris removal concepts and designs have been proposed, very few have made it to actual flight tests, and none can remove debris at a fast enough rate to stop debris growth. For debris currently in orbit, most proposed systems are costly on a large scale and cannot adapt to the wide variety of debris shape and geometry and tumbling. The purpose of the proposed …
Kinetic Modeling Of Dust Grain Dynamics In Electrostatic Sieving, Aaron Berkhoff, Easton Ingram, Fateme Rezaei, Jeffrey Smith, David Bayless, William Schonberg, Daoru Han
Kinetic Modeling Of Dust Grain Dynamics In Electrostatic Sieving, Aaron Berkhoff, Easton Ingram, Fateme Rezaei, Jeffrey Smith, David Bayless, William Schonberg, Daoru Han
Chemical and Biochemical Engineering Faculty Research & Creative Works
A new kinetic particle modeling framework was developed to investigate electrostatic transport of lunar regolith dust particles with applications to the concept of electrostatic sieving. the new approach is based on kinetic particle dynamics and includes major modules of sampling the particle size distribution, solving electric fields, and tracking motion of charged dust grains. a case study for a concept of electrostatic sieving was chosen to validate the new model. the simulation achieved similar performance of particle size classification as reported in the literature. the new model is computationally efficient (takes a few minutes on a PC-type laptop computer) so …
Error Detection & Correction, Robert J. Twiggs
Error Detection & Correction, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Professor Bob Twiggs on "Error Detection & Correction" from August 2, 2024.
Re-Architecting Space Systems: Infrastructure Changes Everything, Rick Fleeter
Re-Architecting Space Systems: Infrastructure Changes Everything, Rick Fleeter
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Professor Rick Fleeter on "Re-Architecting Space Systems: Infrastructure Changes Everything" from
Comm-Modulation & Data Transmission Errors, Robert J. Twiggs
Comm-Modulation & Data Transmission Errors, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Professor Bob Twiggs on "Comm-Modulation & Data Transmission Errors" from August 2, 2024.
Ultrashort Pulsed Laser Treatment Is Effective At Sterilizing Metal Surfaces For Planetary Protection, Kaleb Mcquillan
Ultrashort Pulsed Laser Treatment Is Effective At Sterilizing Metal Surfaces For Planetary Protection, Kaleb Mcquillan
Department of Electrical and Computer Engineering: Dissertations, Theses, and Student Research
To prevent forward contamination from microbes aboard spacecraft intended for exploration of solar system bodies there is a need for effective sterilization methods. However, current techniques are both time-consuming and expensive. For example, dry heat sterilization requires removal from the assembly site and several days of treatment. Furthermore, some components such as optics and electronics are not compatible with current sterilization techniques. In this thesis, a novel femtosecond laser surface processing technique for the rapid sterilization of spacecraft hardware is reported. Femtosecond lasers produce extremely high photon fluxes (1029 photons/s*cm2, ~0.03 J/cm2) in extremely short …
Space Program: Center For Space Research - Austin, Texas #3, Robert J. Twiggs
Space Program: Center For Space Research - Austin, Texas #3, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Professor Bob Twiggs titled "Space Program: Center for Space Research - Austin, Texas #3" from July 29, 2024.
Space Program: Center For Space Research - Austin, Texas #2, Robert J. Twiggs
Space Program: Center For Space Research - Austin, Texas #2, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Professor Bob Twiggs titled "Space Program: Center for Space Research - Austin, Texas #2" from July 29, 2024.
Notes For Contributors, Space And Defense
Waging Peace On The Final Frontier 64th Academy Assembly Proceedings, Space And Defense, Madison Walker
Waging Peace On The Final Frontier 64th Academy Assembly Proceedings, Space And Defense, Madison Walker
Space and Defense
In October 2022, the 64th annual Academy Assembly at the U.S. Air Force Academy took up the theme of “Waging Peace on the Final Frontier.” The following are proceedings of roundtables held by select undergraduates from around the country on questions of space policy & strategy.
Revitalizing America's Low-Yield Deterrent, Alex Kleitz
Revitalizing America's Low-Yield Deterrent, Alex Kleitz
Space and Defense
An array of low-yield weapons will play a vital role in integrated deterrence. *The following essay, submitted in June 2022, earned the Junior Division USSTRATCOM General Larry D. Welch Deterrence Writing Award.
Annual Truman Lecture Usafa 64th Academy Assembly, John Shaw
Annual Truman Lecture Usafa 64th Academy Assembly, John Shaw
Space and Defense
In October 2022, on the occasion of the 64th annual Academy Assembly, focused on “Waging Peace on the Final Frontier,” the deputy commander of USSPACEOM Lieutenant General John Shaw spoke at the Air Force Academy’s endowed Truman Lecture, which itself was created to inspire cadets toward careers in National Security leadership.
Usafa 64th Academy Assembly Banquet Keynote On Nasa Transformation, Madison Walker, Lori Garver
Usafa 64th Academy Assembly Banquet Keynote On Nasa Transformation, Madison Walker, Lori Garver
Space and Defense
In October 2022, at the 64th annual Academy Assembly, focused on “Waging Peace on the Final Frontier,” the former deputy administrator of NASA the Honorable Lori Garver spoke at the Air Force Academy’s 64th Academy Assembly banquet keynote on the implications of NASA transformation for international security. She was introduced in a pre-recorded video by Susan Eisenhower, honorary founder of USAFA’s Eisenhower Center, and interviewed by USAFA Institute for Future Conflict Fellow Madison Walker.
The Unified Command Plan For A New Cold War, David Stilwell
The Unified Command Plan For A New Cold War, David Stilwell
Space and Defense
No abstract provided.
Protecting The Cosmos: Defining Celestial Bodies In The Outer Space Treaty, David Epstein
Protecting The Cosmos: Defining Celestial Bodies In The Outer Space Treaty, David Epstein
Space and Defense
Lack of a clear definition of the term “celestial bodies” as used in the 1967 Outer Space Treaty risks exporting legal and political conflict into the cosmos. *This essay is updated from a previously published version and appears here by permission of the Journal of Space Law at Ole Miss.