Flight Performance Characteristics of a Biologically-Inspired Morphing Aircraft

2005 ◽  
Author(s):  
Mujahid Abdulrahim
Keyword(s):  
Performance Characteristics ◽  
Flight Performance ◽  
Biologically Inspired ◽  
Morphing Aircraft

scholarly journals Optimum Wing Shape of Highly Flexible Morphing Aircraft for Improved Flight Performance

2016 ◽  
Vol 53 (5) ◽  
pp. 1305-1316 ◽  
Author(s):  
Weihua Su ◽  
Sean Shan-Min Swei ◽  
Guoming G. Zhu
Keyword(s):  
Wing Shape ◽  
Flight Performance ◽  
Morphing Aircraft

scholarly journals Design and analysis of a linear servo-actuated variable-span morphing wing

2020 ◽  
Vol 12 (4) ◽  
pp. 71-82
Author(s):  
Aynul HOSSAIN ◽  
Wei WANG ◽  
Hailong YUE
Keyword(s):  
Technology Development ◽  
Shape Change ◽  
Current Trend ◽  
Flight Performance ◽  
Morphing Wing ◽  
Sensors And Actuators ◽  
Morphing Aircraft ◽  
Change Mechanisms ◽  
Variable Span ◽  
Smart Technologies

Morphing aircraft are multi-role aircraft that change their external shape substantially to adapt to a changing mission environment during flight. Current interest in morphing vehicles has been increased by advances in smart technologies such as materials, sensors and actuators. These advances have led to a series of breakthroughs in a wide variety of disciplines that, when fully realized for aircraft applications, have the potential to produce large improvements in aircraft safety, affordability, and environmental compatibility. Morphing wing designs include rotating, sliding and inflating based on shape change mechanisms. The current trend in technology development shows that there is lots to improve with regards to aircraft size, flying range and flight performance envelope. There should be a balance between shape change and the penalties in cost, complexity and weight. Final performance of the morphing aircraft depends heavily on how such balances in design, manufacture and morphing mechanism can be achieved. This paper was an attempt to design and perform a further analysis of an efficient variable span wing for aircraft and fixed wing UAVs.

On the effectiveness of active aeroelastic structures for morphing aircraft

2013 ◽  
Vol 117 (1197) ◽  
pp. 1167-1176 ◽  
Author(s):  
R. M. Ajaj ◽  
M. I. Friswell ◽  
E. I. Saavedra Flores
Keyword(s):  
Torsional Stiffness ◽  
Multidisciplinary Design ◽  
Flight Performance ◽  
Design Optimisation ◽  
Morphing Aircraft ◽  
Control Authority ◽  
And Control ◽  
Long Endurance ◽  
Multidisciplinary Design Optimisation ◽  
Shear Centre

AbstractThis note assesses the benefits of active aeroelastic structures (AAS) in enhancing flight performance and control authority. A representative AAS concept, whose torsional stiffness and shear centre position can be altered depending on the instantaneous flight condition, is employed in the wing of a medium altitude long endurance (MALE) UAV. A multidisciplinary design optimisation (MDO) suite is used in this study. It turns out that AAS can be very effective when used for enhancing control authority of the vehicle but have limited benefits in terms of flight performance (lift to drag).

Biologically Inspired Shape Changing Aerodynamic Profiles and their Effect on Flight Performance of Future Aircraft

2008 ◽  
Vol 56 ◽  
pp. 534-544
Author(s):  
Christian Boller ◽  
Chen Mig Kuo ◽  
Ning Qin
Keyword(s):  
Structural Design ◽  
Propulsion System ◽  
Micro Aerial Vehicles ◽  
Flight Performance ◽  
Biologically Inspired ◽  
Active Materials ◽  
Flight Tests ◽  
Flight Stability ◽  
Aerial Vehicles ◽  
Performance Results

Flying has been inspired by biology since the very early days of aviation. Although aircraft look to be established with regard to their structural design today, active materials have again triggered as to what degree aerodynamic profiles could become more adaptive with regard to their shape and achieving enhanced flight performance. Demonstrating the shortcomings of wing adaptiveness on manned aircraft size is time consuming and costly. This can however be overcome by performing these demonstrations on aircraft at much smaller scale. Aircraft at this scale are micro aerial vehicles (MAV) which have spans far less than a metre and a weight of no more than a few hundred grams. To enhance manoeuvrability and stability birds and insects use actuation principles along their wings such as changing wing thickness or stiffness, or actuating individual flaps with their feathers. Similar effects will be shown for an MAV’s wing thickness and stiffness change regarding flight stability and manoeuvrability and how this can be realised using active materials. It will be explained how a variable V-tail and a vector thrust propulsion system can be realised on an MAV and the resulting effect on flight performance. Results from real flight tests will be included and conclusions will be based on the consequences regarding larger sized aircraft.

ATTRITION DATA AS A CRITERION: I. REASONS FOR WITHDRAWAL AND FLIGHT PERFORMANCE.

1954 ◽  
Author(s):  
Wilse B. Webb ◽  
John T. Bair ◽  
Rosalie K. Ambler
Keyword(s):  
Flight Performance
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