Fixed Wing
A novel hovering type of fixed wing aircraft with stealth capability
... sweep wing – it should be noted that the angle of sweep is not entirely dictated by the fan flow reversed direction, as this can be varied trough the pivoting guide ...
7
Control of fixed wing unmanned aerial vehicles in autonomous variable shape formation flight
... a fixed formation shape [11], a linear distributed control [26] used to maintain a fleet of UAVs flying together in a loose shape formation, but contained inside a pre-determined 3D shape in space, a linear ...
124
A MODIFIED PROJECTIVE TRANSFORMATION SCHEME FOR MOSAICKING MULTI-CAMERA IMAGING SYSTEM EQUIPPED ON A LARGE PAYLOAD FIXED-WING UAS
... Instead of traditional image matching and applying bundle adjustment method to estimate transformation parameters, the IOPs and ROPs of multiple cameras are calibrated and derived [r] ...
7
Evaluation of unmanned aerial vehicle shape, flight path and camera type for waterfowl surveys: disturbance effects and species recognition
... (fixed wing models) or 40m above individuals (multirotor ...when fixed-wing UAVs either approached subjects directly or rapidly changed altitude and/or direction near ...
21
ESTG Cargo 2 Team - 2009 AirCargo Challenge Report
... The lift is related with aspect ratio, where higher aspect ratio produces more lift than a plane with lower values for aspect ratio. Despite those kind of plane can’t fly very fast, the speed is not an important ...
29
Development and testing of a variable-spam morphing wing
... the wing fully retracted (wingspan of 7 in), and another (b) with the wing completely extended (wingspan of 15 ...a fixed wing with the same dimensions, test (a) revealed that the telescopic ...
63
Mission-Based Multidisciplinary design optimization methodologies for unmanned aerial vehicles with morphing technologies
... the wing shape or geometry is far from ...using wing warping (twist motion of the ...to fixed-wing technologies and based on traditional materials and mechani- cal components, such as hinged ...
288
Normalized lift: an energy interpretation of the lift coefficient simplifies comparisons of the lifting ability of rotating and flapping surfaces.
... the wing. Because the lift coefficient was developed initially for fixed wings in steady flow, its application to other lifting systems requires either simplifying assumptions or complex adjustments as is ...
6
Bol. Ciênc. Geod. vol.22 número4
... For typical aerial photogrammetry, because aerial vehicles are fast, the recorded frequency for GPS data cannot be low. According to ACKERMANN (1992), if the velocity is 200 km/h (55m/s), the recorded time should be less ...
20
Aerial Line Transect Survey to Estimate Abundance of Marsh Deer (Blastocerus dichotomus) (Illiger, 1815)
... a fixed wing flat window aircraft (Cesna 172) was used to survey the transect lines along the Paraná River basin (250 km) between the Porto Primavera and Jupiá ...
8
Severe population decline of marsh deer, Blastocerus dichotomus (Cetartiodactyla: Cervidae), a threatened species, caused by flooding related to a hydroelectric power plant
... ABSTRACT. Balancing power production and environmental conservation can be problematic. The objective of this study was to investigate the abundance of marsh deer in the Paraná River Basin, above the Sergio Motta (Porto ...
9
Braz. J. Phys. vol.39 número3
... In this paper, several three dimensional (3-D) four-wing smooth quadratic autonomous chaotic systems are analyzed. It is shown that these systems have a number of similar features. A new 3-D continuous autonomous ...
7
Reassessment of the wing feathers of Archaeopteryx lithographica suggests no robust evidence for the presence of elongated dorsal wing coverts.
... elongated wing covets on the Berlin specimen is that the obscured feather rachises are angled relative to the visible primary feathers ...left wing of ...
3
J. Aerosp. Technol. Manag. vol.6 número3
... morphing wing conigurations. he chosen wing dimensions as well as light conditions are typical of small UAVs and they are listed in Tables 2 and 3, ...Full wing models were required for both ...
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J. Aerosp. Technol. Manag. vol.8 número1
... their wing span in gliding to have enough lit and ly at a certain glide angle to keep them alot (Tucker and Parrott 1970; Zahedi and Khan ...bird wing speed and ...the wing taper factors for ...
11
J. Aerosp. Technol. Manag. vol.8 número4
... the wing and are attached to the fuselage so they can transfer the forces to it; here, the forces will be spread over the entire ...the wing the desired airfoil shape and also to stabilize the construction; ...
11
The Anopheles albitarsis complex with the recognition of Anopheles oryzalimnetes Wilkerson and Motoki, n. sp. and Anopheles janconnae Wilkerson and Sallum, n. sp. (Diptera: Culicidae)
... mesokatepisternum and prealar knob with dark brown setae; middle posterior border of mesokatepisternum, upper mesepimeron and prespiracular area with pale yellow setae. Wing: length 2.96-4.04 mm (mean = 3.35 ± ...
28
Wing pattern diversity in Brassolini butterflies (Nymphalidae, Satyrinae)
... hind wing oceli and their putative interaction with adjacent pattern elements or other color ...hind wing oceli located below veins Sc+R1 and Cu1 (anterior and posterior oceli) are the largest and most ...
27
Notch inhibits Yorkie activity in Drosophila wing discs.
... Because the end-point of SWH pathway activity is to prevent Yki function, the inhibitory effects of Notch on Yki could provide an explanation for those cellular contexts where the two pathways act co-operatively, as at ...
7
Prediction of Shape Distortions in Composite Wing Structures
... different wing models have been simulated. Wing A first wing features a wing with 3 regions as shown Figure 5 and Figure ...The wing planform represents a typical wing planform ...
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