Results 121 to 130 of about 61,069 (314)
Propellants, Explosives, Pyrotechnics, EarlyView.Ammonium dinitramide (ADN) and 3,4‐Diaminofurazan (DAF) form a 1:1 energetic cocrystal. We report its crystal structure and spectroscopic signature and evaluate thermal stability, decomposition behavior, hygroscopicity, and combustion properties. Propellant performance calculations benchmark the material against guanylurea dinitramide (GuDN) and ...
Peter Schultz +2 more
wiley +1 more source
Characterization of Ultrafast Decomposition Dynamics in Nitrate Esters
Propellants, Explosives, Pyrotechnics, EarlyView.ABSTRACT Ignition of energetic materials initiates chemical reactions on atomic length scales within femtoseconds, making these reactions difficult to investigate experimentally. The technique of femtosecond time‐resolved mass spectrometry (FTRMS) can capture molecular rearrangement and bond‐breaking events in isolated molecules with sub‐50 femtosecond
Madison K. Minvielle +3 more
wiley +1 more source
The Three-Dimensional Transient Simulation of Cross-Shaped Grains in Hybrid Rocket Motors
AerospaceThe process of spacecraft entry, deceleration, landing, and ascent requires high specific impulse, high reliability, and high-precision thrust adjustments for the power system.
Xiangyu Meng +5 more
doaj +1 more source
physica status solidi (b), EarlyView.The response of graphene and MoS2 monolayers to highly‐charged impinging ions is investigated using nonequilibrium Green functions theory. Electronic correlations are found to have a significantly stronger influence on the ultrafast ion‐induced electron dynamics in MoS2 than in graphene.
Giorgio Lovato +4 more
wiley +1 more source
Performance of a UTC FW-4S solid propellant rocket motor under the command effects of simulated altitude and rotational spin [PDF]
One United Technology Center FW-4S solid-propellant rocket motor was fired at an average simulated altitude of 103,000 ft while spinning about its axial centerline at 180 rpm. The objectives of the test program were to determine motor altitude ballistic
Merryman, H. L., Smith, L. R.
core +1 more source
Cold solid propellant motor has stop-restart capability [PDF]
, 1966 Solid propellant rocket is kept and fired at low temperatures in launch vehicles or spacecraft. The motor is capable of developing a specific impulse comparable to that of liquid propellant motors, is started, stopped, and restarted, and is stored in ...
Hendel, F. J.
core +1 more source
Survey on AI‐Enabled Computer Vision Technologies and Applications for Space Robotic Missions
Journal of Field Robotics, EarlyView.ABSTRACT This survey provides a comprehensive overview of recent advancements and challenges in Artificial Intelligence (AI)‐enabled computer vision (CV) techniques for space robotic missions, spanning critical phases such as Entry, Descent, and Landing (EDL), orbital operations, and planetary surface exploration.
Maciej Quoos +6 more
wiley +1 more source
Journal of Aerospace Technology and Management, 2013 http://dx.doi.org/10.5028/jatm.v5i3.228 Experimental investigation was conducted to determine the relative propulsive and combustion behavior of several polyurethane-based solid-fuel formulations containing 30% w/w of paraffin or 10% of aluminum powder.
Susane Ribeiro Gomes +3 more
doaj
Transformation of Combustion Nanocatalysts inside Solid Rocket Motor under Various Pressures. [PDF]
Nanomaterials (Basel), 2019 Li JQ +6 more
europepmc +1 more source
Studies of the exhaust products from solid propellant rocket motors [PDF]
This study was undertaken to determine the feasibility of conducting environmental chamber tests on the physical processes which occur when a solid rocket motor exhaust mixes with the ambient atmosphere. Of particular interest was the interaction between
Dawbarn, R., Kinslow, M.
core +1 more source