Results 81 to 90 of about 129,630 (391)
Casting propellant in rocket engine [PDF]
, 1976 A method is described for casting a solid propellant in the casing of a rocket engine having a continuous wall with a single opening which is formed by leaves of a material which melt at a temperature of the propellant and with curved edges concentric to
Froehling, S. C., Roach, J. E.
core +1 more source
Displaced geostationary orbit design using hybrid sail propulsion [PDF]
, 2011 Because of an increase in the number of geostationary spacecraft and the limits imposed by east–west spacing requirements, the geostationary orbit is becoming congested. To increase its capacity, this paper proposes to create new geostationary slots by
Becerra V. M. +14 more
core +1 more source
Perancangan Propeler Self-Propelled Barge
Jurnal Teknik ITS, 2013 Makalah ini menyampaikan suatu penelitian tentang perancangan propeler yang optimal beserta pemilihan daya mesin yang efisien pada self-propelled barge dengan memperhitungkan besarnya nilai tahanan dari barge tersebut. Dengan penambahan sistem propulsi, diharapkan barge dapat beroperasi dengan lebih efisien dibandingkan saat barge beroperasi ...
Billy Teguh kurniawan, Eko Budi Djatmiko
openaire +1 more source
Speedboat Propeller Injuries [PDF]
BMJ, 1974 Six patients are reported who were severely injured by high-speed boat propellers. With reasonable precautions such accidents need never occur, and people should be more aware of these and ensure that safety measures are enforced.
openaire +2 more sources
Reconfigurable Magnetic Soft Microrobot for Acoustically Triggered Targeted Bacterial Sterilization
Advanced Functional Materials, EarlyView.Reconfigurable magnetic soft microrobots integrate in situ‐grown piezoelectric zinc oxide nanorods that produce reactive oxygen species upon acoustic excitation. Combining magnetically guided transport with thermally induced planar reconfiguration, the microrobots achieve targeted delivery and enhanced bacterial sterilization through efficient on ...
Quan Gao +12 more
wiley +1 more source
Needs assessment of gossamer structures in communications platform end-of-life disposal [PDF]
, 2013 The use of a gossamer structure is considered in application to end-of-life disposal of communications platforms. A wide-ranging survey of end-of-life disposal techniques and strategies is presented for comparison against a gossamer structure prior to a ...
Bewick, Charlotte +2 more
core +1 more source
Treatment of deterred propellants in interior ballistic calculations [PDF]
FME Transactions, 2010 In the paper the procedure for determination of deterred propellant characteristics that are necessary as input parameters in interior ballistic calculations is given.
Micković Dejan
doaj
Advanced Functional Materials, EarlyView.This work presents a continuous linear gradient catalyst layer design, a general strategy for improving membrane electrode assemblies across electrochemical devices. Fabricated via a dual‐nozzle spray coating method, the architecture controls the Pt/carbon ratio, ionomer content and ionomer type across the catalyst layer, enhancing proton conduction ...
Shangwei Zhou +15 more
wiley +1 more source
Radiation environment for rendezvous and docking with nuclear rockets [PDF]
, 1972 Radiation environment data for the NERVA engine are provided which may be utilized in estimating radiation exposures associated with various space maneuvers.
Lindsey, B. A. +2 more
core +2 more sources
Advanced Functional Materials, EarlyView.Sulfosalicylic acid (SSA) is introduced as a bifunctional additive for Aqueous zinc‐ion batteries. SSA reconstructs the solvation structure of Zn2+ through the synergistic effects of its multiple functional groups, suppressing side reactions while selectively promoting Zn (002) deposition to prevent dendrite formation.
Le Gao +8 more
wiley +1 more source