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学 术 报 告 报告人: Prof. Dr. Ingo Rechenberg 德国柏林工业大学教授 由昆虫的飞行到微型飞行器的设计 - PowerPoint PPT Presentation


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学 术 报 告 报告人: Prof. Dr. Ingo Rechenberg 德国柏林工业大学教授 由昆虫的飞行到微型飞行器的设计. 时间: 2007 年 10 月 17 日 18 点到 20 点 地点:理科楼 A 楼 504 大会议室.

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学 术 报 告

报告人:Prof. Dr. Ingo Rechenberg 德国柏林工业大学教授

由昆虫的飞行到微型飞行器的设计

时间:2007年10月17日18点到20点

地点:理科楼A楼504大会议室

报告简介:Ingo Rechenberg 教授,1934 年生。他是 Bionik ( Biology+Technics, 有译为科学进化仿生学) 的创始人,主要从工程学的角度研究生物进化的结果,目的是从生物进化仿照设计新的技术 , 例如像蜻蜓大小的飞行器。Rechenberg 教授是一个充满好奇心、创造力的学者,他曾在撒哈拉沙漠设立了一个研究所,研究一种在沙子下面生活的 sandfish. 最近两年,Rechenberg 数次访问中国。这次在本校的报告,Rechenberg 将演示他制造的微型飞行器实物,他的报告,将给我们带来惊叹和无限的启发!

关于 Bionik 的更多介绍,请参考 http://www.bionik.tu-berlin.de/

欢 迎 广 大 师 生 踊 跃 参 加


Insect flight and Micro Air Vehicles

With Flight Demonstrations

Ingo Rechenberg

Technische Universität Berlin

CAS-MPG Partner Institute for Computational Biology, Shanghai


The bee and

the Institute MAV


Ernst Jünger

(1805 – 1998)

Reconstruction of Jünger‘s glass bee

At first I was struck by the large size of these bees…

…they were considerably larger than a normal bee or even a hornet. They were about the size of a walnut still encased in its green shell. The wings were not movable like the wings of birds or insects, but were arranged around their bodies in a rigid band and acted as stabilizing and supporting surfaces.

Novel 1957

Zapparoni, this devil of a fellow, had again outwitted nature. Probably he sat comfortably in his armchair and looked on the screen what the glass bee would send.

Leading character


To my person

Ingo Rechenberg Vice World Champion

Winning Team

1954 World championship for F1A gliders (Denmark)


Mini Air Vehicle

Start to a mission in the dunes


Mini Air Vehicle

Flying straight ahead into the dunes


Mini Air Vehicle

Poking around in the dunes



0.25 mm

The smallest flying insect (Ptenidium sp.)

Micro Air Vehicle (MAV)

Nano Air Vehicle (NAV)

Pico Air Vehicle (PAV)


Pico Air Vehicles

In the Nevada desert, an experiment has gone horribly wrong. A cloud of nanoparticles - micro-robots -has escaped from the laboratory. This cloud is self-sustaining and self-reproducing. It is intelligent and learns from experience. For all practical purposes, it is alive. It has been programmed as a predator. It is evolving swiftly, becoming more deadly with each passing hour. Every attempt to destroy it has failed.


2.5 cm

Micro Air Vehicle (MAV)

Nano Air Vehicle (NAV)


2.5 cm

It never flew

University Berkely

Ronald S. Fearing

The MFI-Project - Micromechanical Flying Insect


Announcement of the

aerospace manufacturer

Lockheed Martin

Lockheed Martin, has won a $1.7 million contract from US defense research agency DARPA to develop a nano air vehicle. The remote-controlled device will be "the size and shape of a maple tree seed" and will be able to collect military intelligence indoors and outdoors. The system will incorporate a one-bladed wing, chemical rocket, sensor module, battery and communications, navigation and imaging kit.

Defense Advanced Research Projects Agency


The maple tree seed as a

model for a Nano Air Vehicle

Rotational axis

Rocket drive


8.5 cm

Picoflyer of the Norwegian

Petter Muren

Nano



A short excursion

into

How lift

flight

is generated

aerodynamics


The airfoil has greater path length on the upper surface than on the lower.

The fluid must run faster on the upper surface.

Bernoulli‘s principle: Higher flow velocity produces lower pressure.

Nonsense !

A cambered sail also produces lift, though the path on the upper side is as long than on the lower side.


There must be a lower pressure at the surface to force the particle on its curved path.

The flow particle moves on a curved path.

Observation: The particle does not fly away due to the centrifugal effect.

Centrifugal effect

Lower pressure Centripetal force

Why does a cambered sail produces lift ?


US Student‘s MAV particle on its curved path.

The decisive question

Epson‘s MAV

Flapping movement

or

rotational movement


Rotation cuts the connection between bearing and shaft particle on its curved path.

Interrupted rotation

In Biology


MAV particle on its curved path.

Dragonfly

Flapping is a substitute of rotation !


Abstracted view of particle on its curved path.

flapping movement

Hovering hummingbird


Abstracted view of particle on its curved path.

flapping movement

Hovering hummingbird


A hovering fly particle on its curved path.


Recorded wing trajectory of a hovering fly particle on its curved path.

Experiment by Michael Dickinson


Engineering versus particle on its curved path.Biology

Dragonfly (fed on honey)

MAV (full charged battery)

Flight duration: 4 houres

Flight duration: 4 minutes


Power to weight particle on its curved path.

Ratio: 0.1 W/g

Energy density:

3.9 Wh/g

26 times more effective

Flight muscle

Honey droplet

Electric motor

LiPo-accumulator

Power to weight

Ratio: 3 W/g

Energy density:

0.15 Wh/g

30 times more effective


MAV particle on its curved path.

manoeuvreability

Low lift

High lift

Swash plate

Low lift

High lift

Low lift

High lift

Low lift

High lift

High lift

Low lift

RC receiver: The brain of the MAV


up particle on its curved path.

foreward

clockwise

right

left

anticlockwise

down

backward

MAV control in 4 freedoms


1 m particle on its curved path.

1 m

Proposel for an indoor competition with Micro Air Vehicles (MAV)


Pylons ! particle on its curved path.

Outdoor Micro Air Vehicle Competition


Number of points particle on its curved path.

Score =

3

Dimension

MAV Event Rules

Theobjetiveistobuildandflythesmallest radio-controlled MAV that can complete the most laps around a pylon course in a 2-minute time period. There will be two pylons spaced 12 meters apart. A circular path (green) flown around the pylons will result in a 1-point addition to the total score, while a figure-8 path (blue) flown around the pylons will result in a 2-point addition to the total score.

12 meters

MAV Competition

pylon

pylon

2 points

1 point


Vision- particle on its curved path.basedcontrolof

autonomouslyflyingmicroairvehicles


Optical flow as seen by a dragonfly flying above ground particle on its curved path..

Displacement of a pixel from one frame to the other


Optical flow and manoeuvre of a dragonfly particle on its curved path.


Weight 33 g particle on its curved path.

HeliCommand

Realization of a

vision-based control unit


A particle on its curved path.futureview


It particle on its curved path.helpsyoueverywhere

whenflying in theair

0

2

0

2

l

e

d

o

M

Buyyour PMAV

B&E Company

Advertisement of an all-purpose artificialdragonfly


The near future particle on its curved path.

Personal MAV

The path of the MAV video signal

using UMTS technique


Molecule „fishing net“ particle on its curved path.

!

Single molecule dedection by

the male of the silkworm moth



Artificial dragonfly with a single molecule sensor for local pest control (eliminating potato beetles)

Leaf aroma

Potato field

attract


Artificial dragonflies examine a sewer pest control (eliminating potato beetles)


Humens hidden under the snow masses pest control (eliminating potato beetles)

Artificial dragonflies form a smart antenna to detect alavanche victims


MAV pest control (eliminating potato beetles)detecting a hidden bomb

Concourseof Leipzig


3Ch RC Mosquito Mini Helicopter smallest in the world pest control (eliminating potato beetles)

The Norwegian Petter Muren with his Nanoflyer

320 Y

hide


Thank You pest control (eliminating potato beetles)

Thank You

www.bionik.tu-berlin.de


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