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151. Detailed Velocity and Heat Transfer Measurements in an Advanced Gas Turbine Vane Insert Using Magnetic Resonance Velocimetry and Infrared Thermometry

Author:
Michael Benson, David Bindon, Mattias Cooper, F. Todd Davidson, . David Helmer, Robert Woodings, Benjamin Duhaime, Bret P. Van Poppel, Christopher Elkins, and John P. Clark
Publication Date:
02-2022
Content Type:
Research Paper
Institution:
Department of Social Sciences at West Point, United States Military Academy
Abstract:
This work reports the results of paired experiments for a complex internal cooling flow within a gas turbine vane using magnetic resonance velocimetry (MRV) and steady-state infrared (IR) thermometry. A scaled model of the leading edge insert for a gas turbine vane with multi-pass impingement was designed, built using stereolithography fabrication methods, and tested using MRV techniques to collect a three-dimensional, three-component velocity field data set for a fully turbulent test case. Stagnation and recirculation zones were identified and assessed in terms of impact on potential cooling performance. A paired experiment employed an IR camera to measure the temperature profile data of a thin, heated stainless steel impingement surface modeling the inside turbine blade wall cooled by the impingement from the vane cooling insert, providing complementary data sets. The temperature data allow for the calculation of wall heat transfer (HT) characteristics, including the Nusselt number distribution for cooling performance analysis to inform design and validate computational models. Quantitative and qualitative comparisons of the paired results show that the flow velocity and cooling performance are highly coupled. Module-to-module variation in the surface Nusselt number distributions is evident, attributable to the complex interaction between transverse and impinging flows within the apparatus. Finally, a comparison with internal HT correlations is conducted using the data from Florschuetz et al. [1981, “Streamwiseflow and Heat Transfer Distributions for Jet Array Impingement With Crossflow,” ASME 1981 International Gas Turbine Conference and Products Show, American Society of Mechanical Engineers. doi:10.1115/1.3244463]. Measurement uncertainty was assessed and estimated to be approximately ±7% for velocity and ranging from ±3% to ±10% for Nusselt number.
Topic:
Science and Technology, Military Strategy, and Innovation
Political Geography:
Global Focus

152. Sharing Cyber Capabilities within the Alliance - Interoperability Through Structured Pre-Authorization Cyber

Author:
Jan Kalberg, Todd Arnold, and Stephen S. Hamilton
Publication Date:
07-2022
Content Type:
Research Paper
Institution:
Department of Social Sciences at West Point, United States Military Academy
Abstract:
Sharing cyber weapon/cyber capabilities requires trust between the member states, becoming a high-end policy decision due to the concerns of proliferation and the investment in designing a cyber-weapon that has a limited ’shelf-life’. The digital nature of cyber weapons creates a challenge. A cyber weapon can spread quickly, either self-propagating such as worms or via disclosure (and subsequent reuse) by malware researchers or malicious actors, raising proliferation concerns. Additionally, a cyber-weapon can be copied by the adversary or reverse engineered. Once the weapon is released, the adversary will eventually address the vulnerability, and the opportunity is gone. These factors raise the threshold between member states to share cyber weapons and cyber capabilities. Alliances, like NATO, prepare for a unified multinational, multi-domain fight; meanwhile, the national cyber forces are still operating as solitaires with limited interoperability and sharing. There is a need in the collective defence posture to integrate the multinational cyber force to achieve interoperability.
Topic:
Security, NATO, Military Strategy, Cybersecurity, and Alliance
Political Geography:
Europe and North America

153. European Security Management at the National Level. A Comparative Analysis of Strategies for the Development of Defence Capability in the United Kingdom and Poland

Author:
Joanna Iwancz and Bartłomiej H. Toszek
Publication Date:
03-2022
Content Type:
Journal Article
Journal:
Polish Political Science Yearbook
Institution:
Polish Political Science Association (PPSA)
Abstract:
The article presents the positions of the UK and Polish governments on the importance of European security management as a factor influencing and shaping the defence doctrine in both states. Building on the systemic nature of European security, security management concepts, as defined in UK and Poland’s strategies for developing defence capabilities, have been examined using a system analysis. The assessment of the issue from the perspective of the UK and Polish governments is based on a decision-making analysis, while differences in the approach to European security are demonstrated through a comparative method. The authors have shown that the actual perception of European security as part of the global order is a factor determining the current involvement of the UK Government in the process of security management. However, the Polish government has shown interest in similar actions only to the extent these are convergent with national security.
Topic:
Security, Defense Policy, Military Strategy, and Governance
Political Geography:
United Kingdom, Europe, and Poland

154. COVID-19 as a Green Light for the Regeneration of ISIS’ Forces in North-East Syria

Author:
Oskar Schaefer
Publication Date:
07-2022
Content Type:
Journal Article
Journal:
Polish Political Science Yearbook
Institution:
Polish Political Science Association (PPSA)
Abstract:
Following the fall of the so-called Islamic State in March 2019, tens of thousands of its fighters, along with their wives and children, were captured and detained in facilities controlled by Syrian Democratic Forces in northeast Syria. Many of which were European. Based on the information provided by scientific institutes and journalists, the outbreak of the Covid-19 pandemic had had a significant impact on the functioning of those facilities. Not only did it aggravate an already severe humanitarian crisis, pushing the detainees to reinforce their attempts of escaping and rioting against the guards, but it also lowered the security level in the controlled facilities, allowing a flourishing of criminal activities. Furthermore, the detainment of ISIS followers turned into a political game between the Kurdish coalition and the United States. The global health crisis put to the test the strategy of many Western governments of keeping European ISIS fighters in the Middle East while pressuring the international community to rethink its approach towards this crescent problem.
Topic:
Military Strategy, ISIS, Pandemic, and COVID-19
Political Geography:
Middle East and Syria

155. Exploratory Study upon Military Leadership in the 21st Century. What Are Skills and Knowledge Required for Leadership Success?

Author:
Fabian Boettcher
Publication Date:
07-2022
Content Type:
Journal Article
Journal:
Polish Political Science Yearbook
Institution:
Polish Political Science Association (PPSA)
Abstract:
Within the context of increasingly digital work, it appeared interesting to look at how military leaders and their leadership style will have to adapt to remain “up-to-speed” with current challenges. It is qualitative research based on interviews with military and civilian experts. Four interviews have been conducted, but there would be the potential to interview many more experts and look deeper into the matter. Within the context of digitalised military leadership, the importance of communication and mutual trust has been underscored by the experts. They agreed that leaders nowadays must embrace digital developments and include them in their leadership styles. The civilian world can learn from the military when it comes to leadership approaches, which is happening at the time of publication of this article with practical examples (senior military leaders assigned to lead the pandemic task force in some countries). Overall, the outcome of the research is that a relevant and resilient military leadership style in the 21st century resembles the elements of the situational leadership style developed by Hersey-Blanchard.
Topic:
Military Strategy, Leadership, Civil-Military Relations, and Digitalization
Political Geography:
Global Focus

156. The Russian Federation Dominance in the International Security Environment

Author:
Miroslaw Banasik
Publication Date:
09-2022
Content Type:
Journal Article
Journal:
Polish Political Science Yearbook
Institution:
Polish Political Science Association (PPSA)
Abstract:
This article presents the research results, which set out to explain the mechanisms leading to the achievement of dominance by the Russian Federation in the international security environment. In the research process, the systemic approach was applied. Analysis and criticism of the literature, non-participatory observation and case study elements were used to solve the research problems. As a result, it was determined that the theoretical basis for the Russian Federation's achievement of international dominance is the concept of new generation war. The model of the strategic influence of the Russian Federation is directed at the shaping of the security environment and includes the synchronisation of kinetic and non-kinetic measures, indirect and direct effects, the blurring of the boundaries between war and peace and the application of pressure and aggression. The Russian Federation achieves strategic dominance through asymmetry, chaos, reflexive control, and strategic deterrence. Armed forces provide a key role in asserting dominance, focused on conducting offensive activities and inflicting losses with conventional and nuclear weapons.
Topic:
Security, Military Strategy, Hegemony, Influence, and Foreign Assistance
Political Geography:
Russia and Europe

157. Export Control and Emerging Technology Control in an Era of Strategic Competition

Author:
Ian Stewart
Publication Date:
03-2022
Content Type:
Special Report
Institution:
James Martin Center for Nonproliferation Studies
Abstract:
CNS has been focused both on the question of emerging technology controls and on the question of export controls in an area of strategic competition. CNS has been undertaking detailed sectoral mapping in relation to several emerging technologies, including artificial intelligence, aerospace and avionics, high-performance computing, biotechnology, cybertechnology, telecommunications, and semiconductor technologies. CNS will soon be launching resources intended to help governments and the private sector to manage these technologies in this new security environment. CNS is also working to benchmark and develop good practices in relation to the cybersecurity of export-controlled information. This article is intended to provide a broader framing to the work CNS is undertaking concerning export controls in an era of strategic competition. CNS staff would be happy to brief officials from governments or the private sector on these topics.
Topic:
Science and Technology, Military Strategy, Nonproliferation, Strategic Competition, and Competition
Political Geography:
Global Focus

158. Everything Counts: Building a Control Regime for Nonstrategic Nuclear Warheads in Europe

Author:
Miles A. Pomper, William Alberque, Marshall L. Brown Jr., William M. Moon, and Nikolai Sokov
Publication Date:
05-2022
Content Type:
Working Paper
Institution:
James Martin Center for Nonproliferation Studies
Abstract:
Before the Russian invasion of Ukraine, the Biden administration insisted in arms control talks with Russia that a follow-on agreement to the New Strategic Arms Reduction Treaty (New START) should cover all nuclear weapons and that such an agreement should focus on the nuclear warheads themselves. This would represent a significant change from previous agreements, which focused on delivery vehicles, such as missiles. The United States has been particularly interested in potential limits on nonstrategic nuclear warheads (NSNW). Such weapons have never been subject to an arms control agreement. Because Russia possesses an advantage in the number of such weapons, the US Senate has insisted that negotiators include them in a future agreement, making their inclusion necessary if such an accord is to win Senate approval and ultimately be ratified by Washington. In the wake of Russian nuclear threats in the Ukraine conflict, such demands can only be expected to grow if and when US and Russian negotiators return to the negotiating table.
Topic:
Arms Control and Proliferation, Diplomacy, Treaties and Agreements, Military Strategy, and Nonproliferation
Political Geography:
Russia, Europe, North America, and United States of America

159. Reframing U.S. Military Strategy Toward Africa

Author:
John Griswold
Publication Date:
12-2022
Content Type:
Journal Article
Journal:
Fletcher Security Review
Institution:
The Fletcher School, Tufts University
Abstract:
How can the U.S. military best support the achievement of national strategic objectives in Africa? While much of the foreign policy discourse since President Biden’s inauguration has focused on China’s growing military capabilities in the Indo-Pacific, curbing the effects of climate change, and the implications of the U.S. withdrawal from Afghanistan, scant attention has been paid to U.S. engagement in Africa. It is noteworthy that the Biden administration’s Interim National Security Strategic Guidance (INSSG) mentions a continent of more than 1.3 billion people — whose population is expected to double by 2050 — in one paragraph out of 23 substantive pages...
Topic:
Security, Foreign Policy, Military Strategy, and Strategic Engagement
Political Geography:
Africa and United States of America

160. China’s Antarctic Ambitions – and Their Implications for Australia

Author:
Yun Jiang
Publication Date:
08-2022
Content Type:
Special Report
Institution:
Australian Institute of International Affairs
Abstract:
In a new special report AIIA China Matters Fellow Yun Jiang argues that popular Australian concerns around the Antarctic ambitions of the People’s Republic of China (PRC), including possible territorial claims, militarisation, and mining, are overstated.
Topic:
Military Strategy, Territorial Disputes, Hegemony, Conflict, Mining, and Strategic Interests
Political Geography:
China, Asia, and Australia