Results 101 to 110 of about 39,483 (253)
Multi-objective Bayesian Optimization With Mixed-categorical Design Variables for Expensive-to-evaluate Aeronautical Applications [PDF]
AEROBEST 2023. Vol. 1. No. 1. 2023This work aims at developing new methodologies to optimize computational costly complex systems (e.g., aeronautical engineering systems). The proposed surrogate-based method (often called Bayesian optimization) uses adaptive sampling to promote a trade-off between exploration and exploitation. Our in-house implementation, called SEGOMOE, handles a high
arxiv
Large-scale wind-tunnel tests of descent performance of an airplane model with a tilt wing and differential propeller thrust [PDF]
Wind tunnel tests of wing stall, performance, and longitudinal stability & control of large model v/stol tilt wing transport ...
Deckert, W. H. +2 more
core +1 more source
Propellants, Explosives, Pyrotechnics, EarlyView.ABSTRACT Nitramine propellants have attracted considerable attention in the domain of solid rockets and gun propulsion because of their energetic and smokeless features. Ammonium perchlorate (AP) is the widely used oxidizer in propellants owing to the excellent burning characteristics.
Makoto Kohga +2 more
wiley +1 more source
Metals from spacecraft reentry in stratospheric aerosol particles. [PDF]
Proc Natl Acad Sci U S A, 2023 Murphy DM +10 more
europepmc +1 more source
Apollo experience report: The role of flight mission rules in mission preparation and conduct [PDF]
The development of flight mission rules from the mission development phase through the detailed mission-planning phase and through the testing and training phase is analyzed.
Keyser, L. W.
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Propellants, Explosives, Pyrotechnics, EarlyView.ABSTRACT Combustion velocity is an important parameter for the formulation of pyrotechnic compositions. It is affected by several parameters that are studied in this work. Pyrotechnic compositions studied are ternary compositions composed of an oxidiser, a metallic reducer and a binder. This binder is also an energetic molecule.
Charles Rosères +3 more
wiley +1 more source
Propellants, Explosives, Pyrotechnics, EarlyView.ABSTRACT This study is devoted to the investigation of combustion characteristics of aluminized solid propellants (SPs) with ammonium nitrate (SP4, 44 wt.% and SP5, 66 wt.%), ammonium perchlorate (5 wt.%), and inert (butyl rubber) and active (polyvinyl tetrazole) binders.
Alexander Gromov +3 more
wiley +1 more source
Apollo experience report: Battery subsystem [PDF]
Experience with the Apollo command service module and lunar module batteries is discussed. Significant hardware development concepts and hardware test results are summarized, and the operational performance of batteries on the Apollo 7 to 13 missions is ...
Trout, J. B.
core +1 more source
A Comparison Between Allied Ordnance Procedure‐48 and Various Machine Learning Models
Propellants, Explosives, Pyrotechnics, EarlyView.The graphcial abstract shows the influence of data set size, algorithm and composition information on the prediction of stabilizer consumption. ABSTRACT This study examines the stabilizer depletion data of seven distinct gun propellants (single base and double base, stabilized with DPA or Arkadite II) using the allied ordnance procedure (AOP)‐48 ...
Moritz Heil +2 more
wiley +1 more source
Terminal-area flight procedures and route design for supersonic transport New York-transatlantic operations [PDF]
The results of an analytical investigation of two departure and arrival transition procedures between John F. Kennedy International Airport and projected North Atlantic track systems for supersonic transport (SST) operations are presented. The procedures
Mclaughlin, M. D., Sawyer, R. H.
core +1 more source