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A conceptual design of a launch vehicle involves the optimization of trajectory and stages considering its launch operations. This process encompasses various disciplines, such as structural design, aerodynamics, propulsion systems, flight…

Optimization and Control · Mathematics 2024-08-02 Jaeyoul Ko , Jaewoo Kim , Jimin Choi , Jaemyung Ahn

Future high-power (10 - 20 MW) hadron accelerators offer many unique opportunities for fundamental science and nuclear applications. With the completion of Proton Power Upgrade (PPU) at 2.8 MW [1] and European Spallation Source (ESS) at 5…

Accelerator Physics · Physics 2022-03-17 Abdurahim Rakhman

Identifying the optimal design of a new launch vehicle is most important since design decisions made in the early development phase limit the vehicles' later performance and determines the associated costs. Reusing the first stage via…

Neural and Evolutionary Computing · Computer Science 2021-02-17 Kai Dresia , Simon Jentzsch , Günther Waxenegger-Wilfing , Robson Hahn , Jan Deeken , Michael Oschwald , Fabio Mota

It is widely accepted that the next lepton collider beyond a Higgs factory would require center-of-mass energy of the order of up to 15 TeV. Since, given reasonable space and cost restrictions, conventional accelerator technology reaches…

This paper presents a dataset, called Reeds, for research on robot perception algorithms. The dataset aims to provide demanding benchmark opportunities for algorithms, rather than providing an environment for testing application-specific…

Computer Vision and Pattern Recognition · Computer Science 2021-09-20 Ola Benderius , Christian Berger , Krister Blanch

Linear acceleration in free space is a topic that has been studied for over 20 years, and its ability to eventually produce high-quality, high energy multi-particle bunches has remained a subject of great interest. Arguments can certainly…

In this paper we look at the ultimate limits of a photon propulsion rocket. The maximum velocity for a photon propulsion rocket is just below the speed of light and is a function of the reduced Compton wavelength of the heaviest subatomic…

General Physics · Physics 2018-07-30 Espen Gaarder Haug

Transporting a heavy payload using multiple aerial robots (MARs) is an efficient manner to extend the load capacity of a single aerial robot. However, existing schemes for the multiple aerial robots transportation system (MARTS) still lack…

Robotics · Computer Science 2025-01-28 Yongchao Wang , Junjie Wang , Xiaobin Zhou , Tiankai Yang , Chao Xu , Fei Gao

A vacuum-powered device that shoots ping pong balls at high subsonic speeds has been used for physics demonstrations for more than a decade. It uses physics that are easily understood by students, even though its operation is not…

Physics Education · Physics 2018-02-16 Mark French , Rajarshi Choudhuri , Jim Stratton , Craig Zehrung , Davin Huston

A novel gas target for interactions between high power lasers and gaseous medium, especially for laser wakefield accelerators, has been designed, manufactured and characterized. The gas target has been designed to provide a uniform density…

Instrumentation and Detectors · Physics 2019-10-18 Constantin Aniculaesei , Hyung Taek Kim , Byeong Ju Yoo , Kyung Hwan Oh , Chang Hee Nam

The use of compressed air cannons in an undergraduate lab provides a way to illustrate the cooperation of diverse physics concepts, such as conservation of momentum, the work-kinetic energy theorem, expansion of gas, air drag, and…

Popular Physics · Physics 2015-05-28 Z. J. Rohrbach , T. R. Buresh , M. J. Madsen

At the far reaches of the outer Solar System, the ice giants remain the last class of planets yet to be studied using orbiters. The 2023-2032 Planetary Science Decadal Survey has underscored the importance of the ice giants in understanding…

Earth and Planetary Astrophysics · Physics 2023-10-24 Athul Pradeepkumar Girija

We study the dynamics and the optimization of the shock deceleration supported by a payload when its airborne carrier impacts the ground. We build a nonlinear elastic model for a container prototype and an elastic suspension system for the…

Soft Condensed Matter · Physics 2014-08-20 T. Lyons , M. Ginther , P. Mascarenas , E. Rickard , J. Robinson , J. Braeger , H. Liu , A. Ludu

The primary challenge of rocket propulsion is the burden of needing to accelerate the spacecraft's own fuel, resulting in only a logarithmic gain in maximum speed as propellant is added to the spacecraft. Light sails offer an attractive…

Instrumentation and Methods for Astrophysics · Physics 2015-09-30 James Guillochon , Abraham Loeb

In this article we revisit the projectile motion assuming a retarding force proportional to the velocity, $\vec{F_r} = -mk\vec{V}$. We obtain an analytical expression for the set of maxima of the trajectories, in Cartesian coordinates,…

Physics Education · Physics 2023-10-04 C. A. Morales , J. H. Muñoz , C. E. Vera

We show efficient laser driven proton acceleration up to 14MeV from a 50 $\mu$m thick cryogenic hydrogen ribbon. Pulses of the short pulse laser ELFIE at LULI with a pulse length of $\approx$ 350 fs at an energy of 8 J per pulse are…

A classic problem of the motion of a point mass (projectile) thrown at an angle to the horizon is reviewed. The air drag force is taken into account with the drag factor assumed to be constant. Analytic approach is used for investigation.…

Classical Physics · Physics 2007-05-23 Peter Chudinov

We have investigated numerically the coupling between a 10 \si{MeV} electron bunch of high charge (\SI{> 100}{pc}) with a laser generated accelerating plasma wave. Our results show that a high efficiency coupling can be achieved using a…

Guiding relativistically intense laser pulses in low-density plasmas enables extended acceleration lengths in laser-plasma accelerators (LPAs), allowing for the production of multi-GeV electron beams. Quantitative interpretation of such…

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