Saturated hydrocarbon polymeric binder for advanced solid propellant and hybrid solid grains Quarterly report no. 3, 1 May - 31 Jul. 1966 [PDF]
Saturated hydrocarbon polymeric binder for advanced solid propellant and hybrid solid ...
Ashcraft, A. C., Jr. +3 more
core +1 more source
Bioinspired Adaptive Leg‐Claw Enables Robust Perching and Grasping for UAVs
Advanced Science, EarlyView.Inspired by owl limb morphology and bat roosting behavior, this study presents a bioinspired adaptive leg‐claw mechanism that enables UAVs to perform robust and versatile perching and grasping. The design integrates a four‐link tibial structure, tension‐driven deformable feet, and active control, enabling stable perching on various branches and ...
Tianyu Cheng +6 more
wiley +1 more source
Three-dimensional finite element analysis of acoustic instability of solid propellant rocket motors [PDF]
A three dimensional finite element solution of the acoustic vibration problem in a solid propellant rocket motor is presented. The solution yields the natural circular frequencies of vibration and the corresponding acoustic pressure mode shapes ...
Hackett, R. M., Juruf, R. S.
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
Analysis of quasi-hybrid solid rocket booster concepts for advanced earth-to-orbit vehicles [PDF]
A study was conducted to assess the feasibility of quasi-hybrid solid rocket boosters for advanced Earth-to-orbit vehicles. Thermochemical calculations were conducted to determine the effect of liquid hydrogen addition, solids composition change plus ...
Andreev T. +7 more
core +2 more sources
Harnessing Phase Separation for the Development of High‐Performance Hydrogels
Advanced Science, EarlyView.ABSTRACT Hydrogels are indispensable for the development of next‐generation bioelectronics, soft robotics, and biomedical devices, where their mechanical properties determine performance and reliability. Among strategies to enhance hydrogel mechanics, phase separation enables controlled heterogeneity resulting in gel networks that are reinforced by ...
Yue Shao +3 more
wiley +1 more source
Energy and Propulsion Optimization of Solid-Propellant Grain of a Hybrid Power Device
EPJ Web of Conferences, 2016 A method of distribution of an additional solid-phase component (oxidizer) providing uniformity of grain burning for the purpose of evaluation and optimization of energy and propulsion parameters of hybrid solid-propellant motor is proposed in the paper.
Bondarchuk Sergey S. +3 more
doaj +1 more source
Advanced Science, EarlyView.Precipitation‐modulated recrystallization enables a programmable bimodal harmonic architecture in a high‐entropy alloy, delivering 1–2 GPa yield strength with >10% ductility from −196 °C to 700 °C. The resulting broad‐temperature robustness arises from the synergy of dual‐mode nanoprecipitation, harmonic core–shell topology, and temperature‐adaptive ...
Wei Li +5 more
wiley +1 more source
Using Light-Gas Guns in Testing the Strength of Solid Gun Propellant Grains [PDF]
Problemy MechatronikiNATO Standardisation Agreements (STANAGs) 4241 and 4496 outline destructive testing procedures to determine how gun propellants in artillery munitions behave when struck by a 12.7 × 99 mm anti-tank projectile travelling at approximately 850 m/s, or by a ...
Paweł SZLĘZAK (paulus.szlezak@gmail.com) +1 more
doaj +1 more source
Flexible case analysis for compressible solid propellant grain motors Status report [PDF]
Stiffness version of finite element method used for numerical analysis of small elementary regions of solid propellant ...
Key, S. W.
core +1 more source