[PDF] Top 20 J. Aerosp. Technol. Manag. vol.8 número2

... Since most readers of this item will be rather well versed in documents concerning systems engineering, I have elected to share some of the points made on this subject in a document d[r] ... See full document

... he present investigation intends to report some experiences for computing aeroelastic damping trends as a function of light speed, based on an output-only modal parameter extraction t[r] ... See full document

... he evaluation of antioxidant performance during thermal ageing was achieved by submitting withdrawn samples to sol/gel extraction, swelling and mechanical testing, dynamical mechanica[r] ... See full document

... As show in Fig. 17, the MCC operations low begins with the execution of satellite trajectory simulations in the STK (1). he data provided by the STK must be saved in text iles in a speciic location on the server ile ... See full document

... A model transformation is made to analyze the close-loop control performance of the multi-UAV system. herefore, the concept of formation center is introduced, which is a formation centroid of the multi-UAV system. A ... See full document

... to close the RANS for the turbulence low. Also, no-slip and Riemann invariant conditions are applied on the solid surface and the far ields for the boundary conditions, respectively. An ideal gas equation is employed to ... See full document

... he present study resulted in four individual cognitive maps and a congregated map that allowed identifying the diiculties in requirements elicitation process for building complex syst[r] ... See full document

... The Assessment and Teaching of 21 st Century Skills Project is used as a baseline for the deinition of the future “critical” skill set, which is considered well aligned with the futu[r] ... See full document

... To verify the previous analysis, the distribution characteristics of ISAR image of the spatial cone target under different micro-motion forms are simulated. The same structure parameters are used in the simulation of ... See full document

... where: x k , F[M k ], z k and H[M k ] are, respectively, the state vector, state transition matrix, measurement vector and observation matrix at time k. M k represents the light model in efect at time k and can be any ... See full document

... The measurement was not performed in an anechoic chamber for availability issues. h e FSS array was placed in a wood frame, positioned at approximately 1.5 m height. Two broadband horn antennas were placed aiming at the ... See full document

... 6.3 J with average of ...7.5 J for RDX, but they did not specify the grain size of the explosive, which has an inluence on the sensitivity of the ... See full document

... high frequency components, the blur artifact identification is based on the comparison of the image against itself, but after filtering the high frequencies; the similarity degree of the images is directly proportional ... See full document

... For lying qualities requirements compliance purposes, the pilot controls inputs are obtained in the frequency range from values lower than the frequency bandwidth ( ω BW ), usually ha[r] ... See full document

... Fig. 8, as a result of forebody vortices evolvement lagged the rolling motion and the response of perturbation did not immediately waken, the pattern of forebody vortices remains the same as RVF when the model ... See full document

... In the improved method, the classic TLC method is complementary by an adaptive compensation control law, and this is designed according to the estimated unknown parameters and state v[r] ... See full document

... When the vehicle is in the launch pad, many activities are performed, such as testing the DC communication with the actuators and sensors, testing the pyrotechnic valves, checking of the destruction system, and loading ... See full document

... As mentioned before, the image analysis for porosity identification was done by using optical microscopy and Image J software. The analysis is shown in Fig. 16. Given a gray scale ranging from 0 (completely black) ... See full document

... ABSTRACT: The experimental results of speciic heat capacity of 2 plastic bonded explosives formulations based on 1,3,5-trinitroperhydro-1,3,5-triazine, using differential scanning ca[r] ... See full document

... Duplex stainless steels (DSS) are characterized ideally by equal amounts of ferrite and austenite, which provides increased mechanical resistance (680 to 880 MPa ultimate tensile strength) due to the ine grain size, ... See full document