Results 81 to 90 of about 30,929 (280)
ChemPhotoChem, Volume 10, Issue 1, January 2026.Development of efficient photocatalytic systems toward hydrogen peroxide evolution was achieved by preparing ternary CdS@ZnIn2S4@carbon heterostructures. Physicochemical characterization demonstrated that the relative population of sp2‐hybridized domains was strongly correlated with photocatalytic performance.
Nikolaos Karamoschos +3 more
wiley +1 more source
Mars Ascent Vehicle Hybrid Propulsion Configuration [PDF]
As part of a Mars Sample Return (MSR) campaign, two Mars Ascent Vehicle (MAV) configurations have been designed in parallel. Each ascent vehicle configuration has a different propulsion system which ultimately leads to two unique vehicle designs. As part
Schnell, Andrew, Yaghoubi, Darius
core +1 more source
Propellants, Explosives, Pyrotechnics, Volume 51, Issue 1, Page 97-107, January 2026.ABSTRACT Conventional hypergolic propellants cause technical problems due to their toxicity and carcinogenic properties, which increase development costs and lead to significant environmental issues. These challenges can be addressed by incorporating additives with low‐toxicity fuels to render them hypergolic.
Kyounghwan Lee +4 more
wiley +1 more source
Space Transportation Materials and Structures Technology Workshop [PDF]
The Space Transportation Materials and Structures Technology Workshop was held on September 23-26, 1991, in Newport News, Virginia. The workshop, sponsored by the NASA Office of Space Flight and the NASA Office of Aeronautics and Space Technology, was ...
Cazier, Frank W., Jr., Gardner, James E.
core +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
Hybrid propulsion technology program: Phase 1. Volume 3: Thiokol Corporation Space Operations [PDF]
Three candidate hybrid propulsion (HP) concepts were identified, optimized, evaluated, and refined through an iterative process that continually forced improvement to the systems with respect to safety, reliability, cost, and performance criteria. A full
Schuler, A. L., Wiley, D. R.
core +1 more source
Performance Comparison Between Two Different Injector Configurations in a Hybrid Rocket [PDF]
, 2007 Mass flux and pressure are usually considered the main parameters affecting the fuel regression rate in hybrid rockets, whereas the influence of the oxidiser injector is often neglected. Nevertheless, in some specific configurations, even in conventional
CARMICINO, CARMINE, RUSSO, ANNAMARIA
core +1 more source
Next generation earth-to-orbit space transportation systems: Unmanned vehicles and liquid/hybrid boosters [PDF]
The United States civil space effort when viewed from a launch vehicle perspective tends to categorize into pre-Shuttle and Shuttle eras. The pre-Shuttle era consisted of expendable launch vehicles where a broad set of capabilities were matured in a ...
Hueter, Uwe
core +1 more source
Ascent trajectory optimisation for a single-stage-to-orbit vehicle with hybrid propulsion [PDF]
, 2012 This paper addresses the design of ascent trajectories for a hybrid-engine, high performance, unmanned, single-stage-to-orbit vehicle for payload deployment into low Earth orbit. A hybrid optimisation technique that couples a population-based, stochastic
Brown, Richard +4 more
core +1 more source
Defence Technology3D printing technology enhances the combustion characteristics of hybrid rocket fuels by enabling complex geometries. However, improvements in regression rates and energy properties of monotonous 3D printed fuels have been limited.
Qihang Chen +8 more
doaj +1 more source