Results 91 to 100 of about 9,609 (252)

SRB-3D Solid Rocket Booster performance prediction program. Volume 1: Engineering description/users information manual [PDF]

open access: yes
The modified Solid Rocket Booster Performance Evaluation Model (SRB-3D) was developed as an extension to the internal ballistics module of the SRB-2 performance program.
Winkler, J. C.
core   +1 more source

Sampling, Mobility, and Anchoring in Small‐Body Sampling Robots: A Comprehensive Review

open access: yesSmartBot, EarlyView.
Small‐body sampling robots are exploration systems that perform contact, sampling, and stable operations on microgravity bodies such as asteroids and comets. The authors review representative robot architectures and key technologies, focusing on the mechanisms, evolution, and coupling of sampling, mobility, and anchoring.
Yurui Shen   +7 more
wiley   +1 more source

Dynamics of pyroclastic density currents : : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Earth Sciences at Massey University, Palmerston North, New Zealand [PDF]

open access: yes, 2016
Listed in 2016 Dean's List of Exceptional ThesesPyroclastic density currents (PDCs) are the most dangerous mass flows on Earth. Yet they remain poorly understood because internal measurements and observations are hitherto non-existent.
Breard, Eric Christophe Pascal
core  

When does category spanning hurt or help producers?

open access: yesStrategic Management Journal, EarlyView.
Abstract Research Summary Scholars have theorized many factors shaping whether category spanning helps or hurts producers. We first synthesize evidence by meta‐analyzing 25 years of empirical research, which reveals a null effect of spanning on average, yet with significant subsample heterogeneity. To unpack it, we theorize and find that spanning hurts
Jungsoo Ahn   +2 more
wiley   +1 more source

What is ‘mental action’? [PDF]

open access: yes, 2019
There has been a resurgence of interest lately within philosophy of mind and action in the category of mental action. Against this background, the present paper aims to question the very possibility, or at least the theoretical ...
Levy, Yair
core  

Computer aided design and analysis of a tunable muzzle brake

open access: yesDefence Technology, 2019
This research work deals with the design of a tunable muzzle brake [10] for a rifle chambered in 5.56 × 45 NATO ammunition. It proposes to solve the problem of handling differences from shooter to shooter by incorporating the feature of tunability ...
Ekansh Chaturvedi, Ravi K. Dwivedi
doaj   +1 more source

The Unintended Consequences of German Deterrence

open access: yesGlobal Policy, EarlyView.
ABSTRACT Germany's evolving deterrence posture boils down to continued participation in NATO nuclear sharing and an ambitious conventional rearmament program. Due to its non‐nuclear status and a result of decades of underinvestment, Germany prioritizes modern conventional weapons.
Ulrich Kühn
wiley   +1 more source

Solid propellant rocket motor internal ballistics performance variation analysis, phase 3 [PDF]

open access: yes
Results of research aimed at improving the predictability of off nominal internal ballistics performance of solid propellant rocket motors (SRMs) including thrust imbalance between two SRMs firing in parallel are reported. The potential effects of nozzle
Adams, G. W., Jr.   +3 more
core   +1 more source

A remotely operated blood sampling and sedative administration device in freely moving pinnipeds

open access: yesMethods in Ecology and Evolution, EarlyView.
Abstract A remotely operated device for use with freely moving pinnipeds was designed and successfully developed for the collection of blood samples and the administration of sedatives via an indwelling, venous catheter. The performance of the sampler, called the ‘Mossquito’, was demonstrated on six wild caught, young‐of‐the‐year grey seals ...
Joanna L. Kershaw   +10 more
wiley   +1 more source

Steady state aerothermochemistry for liquid bipropellant rocket motors [PDF]

open access: yes
Model and theoretical equations describing liquid propellant droplet ballistics and combustion gas behavior in bipropellant rocket motors ...
Agosta, V. D., Burstein, S. Z.
core   +1 more source

Home - About - Disclaimer - Privacy