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Aircraft seat comfort requirements hamburg expo april 9th 2012

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Aircraft seat comfort requirements hamburg expo april 9th 2012

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Based on scientific literature basic requirements for aircraft seats are shown in a way that it can be measured at the seat. Gudelines for seat pan, back rest and leg room are given.

Based on scientific literature basic requirements for aircraft seats are shown in a way that it can be measured at the seat. Gudelines for seat pan, back rest and leg room are given.

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Aircraft seat comfort requirements hamburg expo april 9th 2012

  1. 1. Aircraft seat comfort requirements based on scientific literature prof dr Peter Vink
  2. 2. The passenger experiences comfort therefore, use as well: • tests with passengers in various design stages • human models • guidelines developed by e.g. Boeing and Airbus this presentation: some measurable literature based data
  3. 3. This presentation 3. back- rest 2. 1. seatpan legroom
  4. 4. 1. Legroom: priority nr one minimal 665 mm = 26.2” (p95 world population, ww.dined.nl) for p95 male Dutch it’s: 705 mm = 27.8” =the biggest problem according to 10,032 passengers (Vink et al., 2012)
  5. 5. 1. Legroom + enough shin clearance and footspace see also Boeing guidelines (Vink & Brauer, 2011)
  6. 6. 1. Legroom 166 mm = 6.5” distance between tray table and top of seat pan (p95 Dutch population 31-60 years, ww.dined.nl)
  7. 7. 2. Seatpan Seat pan front upwards, angle dependent on backrest angle: avoid shear forces (Goossens & Snijders, 1995) Pressure distribution according to Zenk et al.(2012): Load in % of body mass
  8. 8. 2. Seatpan Width between armrests: hip width p95 Dutch male: • 1982: 408 mm = 16.1” • 2004: 440 mm = 17.3” 440mm • 2026: ?472mm? Source: www.dined.nl
  9. 9. 3. Backrest 100-130o Recline angle according to some studies: ________________________________________________ 130o Rosmalen et al., 2009 lounge seat experiment 117o Park et al., 2000 observing Korean drivers 120o Hosea et al., 1986 EMG of back muscles 109o Knijnenburg, 2007 truck comfort experiment 114o Gscheidle, 2004 prefered office seat positions 100o Harrison, 2000 literature review ________________________________________________
  10. 10. 3. Backrest: lumbar support max 30 mm = 1.18” (Carcone & Keir, 2007) South-African middle of lumbar support 120-280 mm above seat pan avg 192 mm = 7.56” (Korte, 2013)
  11. 11. 3. Backrest: headrest shoulder height sitting Dutch 2004 20-60 years: p95: 664 mm = 26.1” Foam: p5: 523 mm = 20.6” at neck level (www.dined.nl) stiffnes <1kPa (soft) At head level stiffnes +/- 5.6 kPa (Franz et al., 2012)
  12. 12. More factors influence comfort, like Preflight/postflight and service In the seat itself: seat pan length form of seat pan free shoulder space in- and egress support for device use foam/net, texture/color etc
  13. 13. Conclusion Tests with passengers inevitible in increasing comfort also, because many factors influence comfort First priority: leg room Hip width will increase more info: p.vink@tudelft.nl +
  14. 14. References -Carcone SM, Keir PJ. Effects of backrest design on biomechanics and comfort during seated work .Applied Ergonomics 2007;38: 755-764 -Franz M, Durt A, Zenk R, Desmet PMA. Comfort effects of a new car headrest with neck support .Applied Ergonomics 2012;43(2):336-343 -Goossens RHM, Snijders CJ. Design criteria for the reduction of shear forces in beds and seats. Journal of Biomechanics 1995; 28: 225-230 -Gscheidle GM, Reed MP, Sitter-selected postures in an office chair with minimal task constraints. In: proceedings of the HFES 48th annual meeting 2004: 1086-1090, cd-rom 2004 -Harrison DD, Harrison SO, Croft AC, Harrison DE, Troyanovich SJ, Sitting Biomechanics, Part II: Optimal Car Driver's Seat and Optimal Driver's Spinal Model. Journal of Manipulative and Physiological Therapeutics 2000; 23: 37-47, -Hosea TM, Simon SR, Delatizky J, Wong MA, Hsieh CC. Myoelectric analysis of the paraspinal musculature in relation to automobile driving. Spine 1986; 11:928-36 -Knijnenburg, R, Future passengers side truck seats for DAF. Confidential, TU-delft, Delft, 2007 -Korte J. South African anthropometric dimensions for the design of an ergonomic office chair, Rhodes University, Grahamstown, 2013 -Park SJ, Kim Ch, Kim CJ, Lee JW. Comfortable driving postures for Koreans. In J of Industrial Ergonomics 2000; 26: 489-497 -Rosmalen D van, Groenesteijn L, Boess S, Vink P. Using both qualitative and quantitative types of research to design a comfortable television chair. J. of Design Research 2009; 8: 87–100 -Vink P, Bazley C, Kamp I, Blok M. Possibilities to improve the aircraft interior comfort experience. Applied Ergonomics 2012;43:354-359 -Vink P, Brauer K, Aircraft interior comfort and design, CRC Press, Boca Raton, 2011 -Zenk R, Franz M, Bubb H, Vink P. Technical note: Spine loading in automotive seating. Applied Ergonomics 2012;43:290-295

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