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Dr. Faheem Uddin, C. Text., FTI

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Title: Textiles in aerospace applications Author: 2676 Last modified by: 3625 Created Date: 5/4/2009 10:05:24 AM Document presentation format: On-screen Show – PowerPoint PPT presentation

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Title: Dr. Faheem Uddin, C. Text., FTI


1
Dr. Faheem Uddin, C. Text., FTI
  • Associate Professor, UMT
  • Ph. D from University of Manchester, UK
  • Fellow of The Textile Institute, UK,
  • HEC approved supervisor for Ph. D research
  • UNESCO- AEGIS survey laureate
  • 30 textile research papers in international
    refereed journals
  • 15 year working experience worldwide
  • Topic
  • Textiles in Aerospace Applications

2
Textiles in aerospace applications
  • Dr. Faheem Uddin, C. Text., FTI
  • Textile Department, SST, University of Management
    and Technology, Lahore, Pakistan.

3
Presentation contents
  • Presentation aims
  • What is aerospace and aerospace industry
  • Why textile in interdisciplinary applications
  • What are aerospace textiles
  • G- suit
  • Astronauts suiting
  • User stations/ missions
  • Suits for planetary explorations
  • Parachutes
  • Performance requirements from textiles
  • DRA forecasts and Pakistan
  • Thanks

4
Presentation aims
  • Introducing textiles used in aerospace
    applications
  • Realizing the significance of aerospace textiles
  • Motivating the research R D interest in
    technical textiles

5
What is aerospace and aerospace industry
  • Aerospace can be aeronautics (flight science in
    Earth's atmosphere) and space flight (vehicle
    movement beyond the atmosphere). It deals with
    flight, and the aerospace industry manufactures
    for things that fly. The jobs are done by team of
    specialized individiuals. http//www.launchinto
    aerospace.org
  • In most industrial countries, the aerospace
    industry is a cooperation of public and private
    industries. For example, several countries have a
    space program under the command of the
    government, such as NASA in the United States,
    ESA in Europe, the Canadian Space Agency in
    Canada, RKA in Russia, China National Space
    Administration in China, and Iranian Space Agency
    in Iran.
  • Along with these public space programs, many
    companies produce technical tools and components
    such as spaceships and satellites. From Wikipedia

6
Why textile in interdisciplinary applications
  • Textiles as material have dynamism for
    interdisciplinary applications Why is that!
  • High strength
  • Softness
  • Flexibility in structure
  • Air and vapor permeability
  • High strength to weight ratio
  • Stability to environmental conditions
  • Conformable to shape and sizes

7
Textiles in aircraft
  • From pilot clothing to plane- would be anywhere

8
Aerospace textiles
  • Aerospace textile is an area of technical
    textiles that covers special finished products to
    engineered textiles.
  • It includes the textile containing articles for
    specific functional requirements to work in
    aircrafts, space shuttles, lunar and mars
    mission, and space transportation.

9
Textile fibers in aeroplanes
  • Since 1960, significant rise in the use of carbon
    fiber is noted.
  • By 2006, Boeing 787 consisted of 50 by weight
    and 80 by volume carbon fiber- that was a
    textile plane.
  • Carbon fiber was used as laminates for control
    surfaces, the flaps, spoilers, gear doors (main
    landing doors are larger than the wings in
    fighter planes- generally).
  • The interior of Boeing 747 400 was from carbon
    fiber, and there are 1200 flying today.
  • Modern commercial aircrafts are made of fabric
    layers pasted with resin in a composite.
  • Source Alan K Pritchard, textiles, (2008),
    Volume 35, No. 4, 15-16.

10
Carbon fibers
  • Carbon fibers (cf) provide the properties in
    composites including high strength, stiffness,
    lower weight, outstanding fatigue
    characteristics.
  • Light weight material are particularly suited to
    military aircraft.
  • Carbon fiber density is 1750 kg per cubic mtr.
  • 60 cf of world production is consumed in US, 50
    of world production capacity is in Japan.
  • Source Raghavendra R. Hedge, //web.uk.edu
  • Flammability properties, fire hazard, of aircraft
    carbon- fiber structural composite are recently,
    October 2007, released by US department of
    transportation, federal aviation administration
    to the US public though NTIS.

11
G- Suits
  • Type of garment generally in the form of tightly
    fitting trousers worn by aviators to control the
    blood circulation at higher level of
    acceleration.
  • It is to reduce blood flow to lower side of human
    body under the influence of acceleration or
    deceleration.
  • Generally, a g-suit is composed of inflatable
    bladders, containing air or liquid that can be
    pressurized using a g-sensitive valve and held
    firm to legs and abdomen under higher values of
    g.
  • The principle desired function of g-suit is to
    resist the blood draining from brain and upper
    body parts to legs of aviators

12
G- suitii
13
G- suit..iii
  • Blood pooling results in preventing the loss of
    conscious and the variation in the level of
    visibility of aircraft pilot.
  • The initial effect of blood pooling in lower
    parts is a reduced level of vision termed as
    grey- out ( browning of scene). Stronger vision
    loss is termed as tunnel- vision, and the
    ultimate result is a black- out effect called
    g-induced loss of consciousness (g- LOC).
  • Development project on the study of g- suit at
    NED University with a public department was an
    encouraging step in gaining the local skill.

14
G- induced black out
15
G- suit
  • Pilot, as a result of rapid changes in the
    acceleration, typically, in few seconds a pilot
    weighing 160 pound can feel a nine times gain in
    his weight reaching to 1440 pounds.
  • Currently the g-suits are available that can
    retain the aviator consciousness under an
    acceleration of 9g.
  • Popular Science Magazine, California (USA). The
    magazine had recognized an Air Force Test Pilot
    School tested prototype anti- gravity suit in the
    top-100 technology development of 2000.

16
Space suits
  • The clothing used in space crafts is generally
    called space suits.
  • Apollo, Skylab, Space Shuttle,International Space
    Station (ISS) and Constellation had benefited
    from the performance of textiles.
  • However, all these were of highly specialized
    nature in design, material development,
    fabrication, testing and quality assurance.
  • NASA (National Aeronautic and Space
    Administration) had used space suit pressure
    garment. Apollo A7LB was the first highly mobile
    space suit that helped astronauts to walk on the
    lunar surface in late 1960s.

17
Textiles- going in space
18
In space shuttle
19
Apollo A7LB
20
Space Shuttle Extravehicular Mobility Unit
  • Space Shuttle Extravehicular Mobility Unit (EMU)
    can be described as a waist entry suit with a
    hard upper torso (HUT) and relatively softer
    mobility joints made of fabric.
  • EMU suits were particularly to work in zero
    gravity.

21
Suits for planetary explorations
  • For planetary exploration, improved mobility and
    waist flexing are important for moving up and
    down for kneeling and ground features study.
  • Entry method is considered as an important
    feature, and the space suits had been named in
    terms of entry types.
  • These include waist entry, rear entry, bi-planar
    entry and soft zipper type entry. Several
    characteristics of space- suit including suit
    sizing, suit mass, suit volume, suit comfort etc.
    have resulted from the entry type.
  • The considerations of vehicle and surrounding
    interfaces including air locks, hatches and
    manned rover (a small vehicle launched from a
    Lander and used to explore the surface of the
    moon or planet) are addressed in the design of
    entry type.

22
Manned rovers
  • Moon rovers

23
Parachutei
  • Parachute is a type of space textiles
    contributing in the space operations. It is
    effectively contributing in aerospace motion for
    men and materials.
  • Parachutes help the safe decent of person or
    material from aerospace to ground surface.
  • These can also be used for horizontal
    deceleration of fixed- wing aircraft

24
Parachute...ii
  • http//wings.avkids.com/Book/Nature/Images/parachu
    te.gif

25
Parachute.iii
  • Generally, a parachute composes of thin light-
    weight fabric, supporting tapes and suspension
    lines.
  • Nylon, polyester, Kevlar and Nomex fiber types
    can be used in fabric for parachute.
  • The tethers connecting the parachute to back
    shell are made of Kevlar. Significant physical
    properties are demonstrated by the fibers
    including Kevlar, Nomex types fibers. Strength of
    Kevlar fibers is five times greater than steel on
    an equal weight basis.
  • The toughness and high rigidity are useful to
    produce engineered textiles where resistance to
    cut and shock is desired. Flexibility and weather
    resistance of fibers provide interesting features
    to achieve in aerospace operations.
  • The forces acting upon the parachute following
    its full expansion are addressed in developing
    the design of parachute. Typically, these forces
    can be calculated from the atmospheric density,
    velocity, parachute drag area and mass. 

26
Textile performance in aerospace
  • Low shrinkage
  • High abrasion and impact resistance
  • Thermal and electrical insulation
  • Flame retardancy
  • Higher thermal- mechanical properties
  • Stability to UV effects
  • Stability to ozone effects
  • Non- hygroscopic
  • High strength to weight ratio
  • .

27
Traditional functional textiles
  • The textile articles derived from home products
    however, with added functionality.
  • Curtains
  • Upholstery fabrics
  • Wall covers
  • Head set
  • Floor covering
  • Seat covers etc.

28
DRA forecasts for technical textile market share
  • Americas 29
  • Europe 24
  • Asia 44 (Lets find Pakistan!)
  • ROW 3
  • ROW- rest of the world

29
Thanks
  • Enquiries
  • Comments
  • Presentation closed
  • For further interest in technical textile product
    development and performance evaluation interests-
    contact details
  • faheem_at_umt.edu.pk
  • dfudfuca_at_yahoo.ca
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