Results 111 to 120 of about 7,742 (253)
The effect of muzzle blast wave on light screen in external ballistic measurement
Frontiers in PhysicsIntroductionIn measuring initial velocity, light screen detectors (LSD) are positioned closer to the muzzle. The light screen of the LSD can be affected by the muzzle blast wave (MBW), resulting in an inaccurate initial velocity.MethodsA method for analyzing the effect of the MBW as it passes through the light screen is proposed in this article. First,
Chenxi Duan +4 more
openaire +2 more sources
Iran's Forward Defense in Sub‐Saharan Africa
Middle East Policy, EarlyView.Abstract This article examines Iran's security and defense initiatives in sub‐Saharan Africa between 1990 and 2024 and how they reflect the extraterritorial application of the regime's forward defense doctrine. In response to the long‐term erosion of its homeland defense capabilities since the Iran‐Iraq War of the 1980s—driven by infrastructure ...
Ariel Limanya Limbu, Ronen A. Cohen
wiley +1 more source
Signals, Red Lines, and Collision: The Israel‐Iran Spiral and US Intervention
Middle East Policy, EarlyView.Abstract The Iran War erupted in February 2026 without UN authorization, and Washington's rationales—Iranian nuclear ambitions, missile capacity, and proxy threats—map more closely onto Israeli than US security interests. Why have we seen two major conflicts between these belligerents in less than one year?
Buğra Sari
wiley +1 more source
Development of an external ballistics simulation software
, 2013 C++ programlama dilinde, dış balistik uygulamaları için tamamen otomatik Hesaplamalı Akışkanlar Dinamiği (HAD) yazılımı geliştirilmiştir. Yazılımda, istenilen konik kuyruklu veya düz arkalı mermilerin serbest uçuş şartlarında basınç odaklı sürüklenme katsayılarının hesaplanması amaçlanmıştır.
openaire +2 more sources
External ballistics of Pleistocene hand-thrown spears: experimental performance data and implications for human evolution. [PDF]
Sci Rep, 2019 Milks A, Parker D, Pope M.
europepmc +1 more source
Trump's Transactional Diplomacy: Breakthrough or Breakdown?
Middle East Policy, EarlyView.Abstract The US‐Israeli war on Iran appears to demonstrate the perils of a transactional diplomacy that dismisses the rules‐based, liberal international order in pursuit of American dominance. Much of the growing literature assumes transactional diplomacy will be a temporary, Trump‐driven departure from traditional, values‐based statecraft. By contrast,
Guilain Denoeux, Robert Springborg
wiley +1 more source
Pacific Focus, EarlyView.ABSTRACT South Korean President Park Geun‐hye's 2016 decision to authorize the deployment of the U.S. Forces Korea THAAD system—and Beijing's subsequent economic and diplomatic coercion—marked a decisive inflection point in Seoul's China policy.
Joel Atkinson
wiley +1 more source
Naukovyi Visnyk Natsionalnoho Hirnychoho UniversytetuPurpose. Development of an approximate nonlinear model for the solution of the external ballistics problem with determination of the nonlinear system parameters and development of a methodology for calculating the aerodynamic characteristics of the cargo, located on the external suspension of unmanned aerial vehicle (UAV) in order to increase the ...
O. O Aziukovskyi +5 more
openaire +1 more source
Block 2 SRM conceptual design studies. Volume 1, Book 1: Conceptual design package [PDF]
The conceptual design studies of a Block 2 Solid Rocket Motor (SRM) require the elimination of asbestos-filled insulation and was open to alternate designs, such as case changes, different propellants, modified burn rate - to improve reliability and ...
Doll, Dan +8 more
core +1 more source
Experimental Physiology, EarlyView.Abstract Manned space exploration to distant destinations, including Mars, continues to be an aspiration of humankind. Space travel does, however, present many challenges to the body, amongst which adaptation to microgravity is perhaps the largest. For instance, both short and long manned spaceflight missions have shown substantial deleterious effects ...
Gerard McMahon +2 more
wiley +1 more source