Flight Controls and Performance Challenges for MAVs in Complex Environments

Ol, Michael V.; Parker, G. H.; Abate, Gregg; Evers, Johnny

doi:10.2514/6.2008-6508

Cited by 42 publications

(19 citation statements)

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“…It is seen that the flight path angle becomes positive instantaneously. This is in keeping with the perching maneuver described in literature, for example [1]. Figure 12(c) shows the wing twist.…”

Section: Simulationssupporting

confidence: 60%

“…In the last three plots, the equilibria are seen to be unstable with a single positive real eigenvalue for large negative values of the wing dihedral. The steady state analysis demonstrated here is of limited utility insofar as determining the agility of the aircraft is concerned, because agility is evaluated primarily on the basis of transient maneuvers such as perching [1]. Nevertheless, a steady state analysis is useful for two reasons.…”

Section: This Subsection Illustrates Two Pointsmentioning

confidence: 99%

“…There is a substantial interest in the aerospace community to learn and mimic avian flight. The challenge lies in developing unmanned aerial vehicles which have, among other attributes, (a) autonomy, (b) agility and (c) the ability to fly in constrained environments [1]. Birds are ubiquitous examples of such flyers and therefore, a natural choice as role models for miniature and micro aerial vehicles (MAVs) wherein these attributes can be engineered.…”

Section: D L Ymentioning

confidence: 99%

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Flight Mechanics of a Tailless Articulated Wing Aircraft

Paranjape

Chung

2010

AIAA Atmospheric Flight Mechanics Conference

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This paper explores the flight mechanics of a Micro Aerial Vehicle (MAV) without a vertical tail. The key to stability and control of such an aircraft lies in the ability to control the twist and dihedral angles of both wings independently. Specifically, asymmetric dihedral can be used to control yaw whereas antisymmetric twist can be used to control roll. It has been demonstrated that wing dihedral angles can regulate sideslip and speed during a turn maneuver. The role of wing dihedral in the aircraft's longitudinal performance has been explored. It has been shown that dihedral angle can be varied symmetrically to achieve limited control over aircraft speed even as the angle of attack and flight path angle are varied. A rapid descent and perching maneuver has been used to illustrate the longitudinal agility of the aircraft. This paper lays part of the foundation for the design and stability analysis of an agile flapping wing aircraft capable of performing rapid maneuvers while gliding in a constrained environment.drag, lift and side force J R,R , J L,R moment of inertia tensor of the right and left wings respectively, in their respective wing root frames J R , J L , J moment of inertia tensor of the right and left wings, and the aircraft body respectively, in the aircraft body frame m w,R , m w,L mass of the right and left wings, respectively m total mass of the aircraft p, q, r body axis roll, pitch and yaw rates r CG

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Section: Simulationssupporting

confidence: 60%

Section: This Subsection Illustrates Two Pointsmentioning

confidence: 99%

Section: D L Ymentioning

confidence: 99%

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Flight Mechanics of a Tailless Articulated Wing Aircraft

Paranjape

Chung

2010

AIAA Atmospheric Flight Mechanics Conference

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“…In contrast with insects whose wings are well modeled as simple rigid wings, both wing flexibility and wing articulation are believed to play a key role in flight performance and agility for bird and bat flight [90]. The broader goal is to learn and mimic avian flight with the ultimate objective of designing unmanned aerial vehicles which are autonomous, agile and capable of flying in constrained environments [57]. Birds are natural role models for designing robotic micro air vehicles (MAVs) wherein the aforementioned attributes can be engineered.…”

Section: Introductionmentioning

confidence: 99%

Bio-Inspired Integrated Sensing and Control Flapping Flight for Micro Aerial Vehicles

Chung¹

2012

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“…One of the challenging problems facing the aeronautical community is developing unmanned aerial vehicles which are autonomous, agile and which possess the capability to fly in constrained environments [1]. Birds are ubiquitous examples of such vehicles and therefore, a natural choice for role models for agile micro aerial vehicles (MAVs) wherein these attributes can be engineered.…”

Section: Introductionmentioning

confidence: 99%

Performance and Stability of an Agile Tail-less MAV with Flexible Articulated Wings

Paranjape

Chakravarthy

Chung

et al. 2010

AIAA Atmospheric Flight Mechanics Conference

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This paper considers the problems of (a) modelling the flight mechanics of a tail-less MAV equipped with flexible articulated wings, and (b) the analysis of its turning performance. The wings are assumed to have two degrees of freedom -heave and twist. They are assumed to be actuated from the root, which is the abstraction of an experimental control mechanism being developed by the authors. The dihedral and twist angles at the wing root are controlled. A novel actuator concept of axial tension to control wing stiffness has been explored in this paper. It is shown that axial tension in the wing has a significant effect on the turning performance of the aircraft, although the effect is not uniformly beneficial in nature. The effect of flexibility on the steady state turning performance of the aircraft has been demonstrated by comparing it with that of a rigid aircraft, and with that of a similar aircraft possessing a wing with different elastic properties.drag, lift and side force J R , J L , J moment of inertia tensor of the right and left wings, and the aircraft body respectively, in the aircraft body frame m w,R , m w,L mass of the right and left wings, respectively m total mass of the aircraft p, q, r body axis roll, pitch and yaw rates r CG position vector of the aircraft center of gravity S(p)q cross product p × q, where p, q ∈ R 3

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Flight Controls and Performance Challenges for MAVs in Complex Environments

Cited by 42 publications

References 0 publications

Flight Mechanics of a Tailless Articulated Wing Aircraft

Flight Mechanics of a Tailless Articulated Wing Aircraft

Bio-Inspired Integrated Sensing and Control Flapping Flight for Micro Aerial Vehicles

Performance and Stability of an Agile Tail-less MAV with Flexible Articulated Wings

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