ASD-STAN PREN 4723-2013 Aerospace series Standardized measurement methods for comfort and living space criteria for aircraft passenger seats (Edition P 1).pdf

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1、ASD-STAN STANDARD NORME ASD-STAN ASD-STAN NORM prEN 4723 Edition P 1 October 2013 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATION Rue Montoyer 10 - 1000 Brussels - Tel. 32 2 775 8126 - Fax. 32 2 775 8131 - www.asd-stan.org ICS: Descriptors: ENGLISH VERSION A

2、erospace series Standardized measurement methods for comfort and living space criteria for aircraft passenger seats Srie arospatiale Mesure standardise du confort et de lespace de vie des siges passagers davion Luft- und Raumfahrt Standardisierte Memethoden fr Komfort und Living Space Kriterien bei

3、Passagiersitzen im Flugzeug This “Aerospace Series“ Prestandard has been drawn up under the responsibility of ASD-STAN (The AeroSpace and Defence Industries Association of Europe - Standardization). It is published for the needs of the European Aerospace Industry. It has been technically approved by

4、 the experts of the concerned Domain following member comments. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and

5、 review by users and formal agreement of ASD-STAN, it will be submitted as a draft European Standard (prEN) to CEN (European Committee for Standardization) for formal vote and transformation to full European Standard (EN). The CEN national members have then to implement the EN at national level by g

6、iving the EN the status of a national standard and by withdrawing any national standards conflicting with the EN. Edition approved for publication 1 October 2013 Comments should be sent within six months after the date of publication to ASD-STAN Engineering Procedures Domain Copyright 2013 by ASD-ST

7、AN prEN 4723:2013 (E) 2 Contents Page Foreword 4 1 Scope 5 2 Normative references 5 3 Abbreviations and definitions 6 4 Requirements . 7 4.1 General 7 4.2 Comfort and living space metrics 7 5 Technical/geometric definitions and measurement methods . 9 5.1 Cushion reference point (CRP) 9 5.1.1 CRP de

8、finition 9 5.1.2 CRP measurement method . 9 5.2 Seat reference point (SRP) . 10 5.2.1 SRP definition 10 5.2.2 SRP measurement method . 10 5.3 Seat measurement reference point (SMRP) / Seat comfort reference point (SCRP) 11 5.3.1 SMRP/SCRP definition 11 5.3.2 SMRP / SCRP measurement method . 11 5.4 H

9、-point 11 5.4.1 H-point definition . 11 5.4.2 H-point measurement method 12 6 Living space . 12 6.1 Pitch running through the front surface of the compressed seatback at points 3 in (76,2 mm) and 23 in (584,2 mm) above the “compressed seat cushion height”. Key 1 Compressed seatback at 23 in (584,2 m

10、m) 2 SMRP/SCRP 3 Compressed seat cushion lowest point 4 Compressed seatback at 3 in (76,2 mm) 5 Top of track Figure 4 Seat comfort reference point (SCRP/SMRP) 5.3.2 SMRP / SCRP measurement method The SMRP/SCRP is to be measured with a 3-D CAD system. The seat including the full geometry of the seat

11、cushions need to be reflected in the 3-D CAD system. The compressed seat bottom cushion plane shall be drawn parallel to the top of track plane at a height to which a 77 kg (170 lb) weight passenger equivalent to a 50%ile SAE anthropomorphic dummy has compressed the cushion. The seatback plane is de

12、signed by drawing a six-inch wide plane parallel to the vertical centre axis of the seatback and running through the front surface of the compressed seatback at points 3 in (76,2 mm) and 23 in (584,2 mm) above the previously measured compressed seat cushion height. 5.4 H-point 5.4.1 H-point definiti

13、on The H-point is defined as the point where centre-lines of upper torso and femoral of the dummy (50%ile male) seated in upright position meet, see Figure 5. prEN 4723:2013 (E) 12 Key 1 H-point 2 Top of track Figure 5 H-point 5.4.2 H-point measurement method The H-point shall be measured according

14、to SAE AS8049B linked to SAE J826. 6 Living space 6.1 Pitch & 3-D living space 6.1.1 Pitch & 3-D living space definition The pitch indicates the possible and certified distances between two seats and shall be measured either from front stud to front stud or from rear stud to rear stud on two seats p

15、laced behind each other over the seat place width of one PAX seating place, see Figure 6. 3-D living space shall be measured in a 3-D CAD programme in cubic inches. At least the following pitches shall be taken into account: 28 in (711,2 mm), 30 in (762 mm), 32 in (812,8 mm) and 36 in (914,4 mm) for

16、 E/C, 45 in (1 143 mm), 58 in (1 473,2 mm), 60 in (1 524 mm), 70 in (1 778 mm) and 80 in (2 032 mm) for P/C where applicable. Key 1 Seat pitch distance Figure 6 Pitch example prEN 4723:2013 (E) 13 6.1.2 Pitch & 3-D living space measurement method The seat pitch shall be measured from front stud to f

17、ront stud in the seat centre plane. 3-D living space shall be measured in a CAD-drawing programme by computing the space volume from the seat back surface to the seat front surface of a pair of seat pax places at pre-defined pitches. Pitches: 28 in (711,2 mm), 29 in (736,6 mm), 30 in (762 mm), 31 in

18、 (787,4 mm), 32 in (812,8 mm), 33 in (838,2 mm), 34 in (863,6 mm), 35 in (889 mm) and 36 in (914,4 mm) for E/C, 45 in (1 143 mm), 58 in (1 473,2 mm), 60 in (1 524 mm), 70 in (1 778 mm) and 80 in (2 032 mm) for P/C where applicable. For the sake of comparison this measurement shall be performed at a

19、seat spreader distance of 500 mm (19,685 in) in y-direction. 6.2 Shin clearance (SHC) 6.2.1 SHC definition The shin clearance (SHC) is defined as the shortest distance from the “H-point” to a 60 in (1 524 mm), 45 in (1 143 mm) or 35 in (889 mm) (for long range A/C only) degree plane touching the aft

20、 lower portion of the seat back, frame or shrouding, see Figure 7. Key 1 H-Point 2 Top of track 3 SRP Figure 7 Shin clearance (SHC) 6.2.2 SHC measurement method 6.2.2.1 General Shin clearance shall be measured for following distances: Pitches shall be measured in full inch increments for the request

21、ed range as far as the seat is qualified for these. For economy class seats pitches from 28 in (711,2 mm) to 36 in (914,4 mm), for premium class seats pitches of 34 in (863,6 mm) up to 40 in (1 016 mm) and, for business class seats pitches from 45 in (1 143 mm) up to 60 in (1 524 mm) shall be measur

22、ed. This measurement can be performed either in a CAD-programme or directly on the hardware. The shin clearance shall be measured along the x-axis according to the H-point. prEN 4723:2013 (E) 14 6.2.2.2 Hardware A pair of seats shall be placed at pre-defined pitches. A rigid measuring device shall b

23、e adjusted to angles 35, 45 and 60, one angle per measurement. The previously measured H-point shall be indicated on the rear pax place by a rigid and securely attached device. The shortest distance from the H-point to each SHC-line (SHC 60, SHC 45 and SHC 35) shall be measured. The shortest distanc

24、e is defined as that line from H-point meeting the SHC-line under 90. 6.2.2.3 CAD-Programme A virtual pair of seats shall be placed at pre-defined pitches. Fixed lines shall be added under angles of 35, 45 and 60, one angle per measurement. The previously measured H-point shall be indicated on the r

25、ear pax place by a fixed point in the drawing. The shortest distance from the H-point to each SHC-line (SHC 60, SHC 45 and SHC 35) shall be measured. The shortest distance is defined as the line from where the H-point meets the SHC-line under 90. 6.3 Shoulder obstruction height (SOH) 6.3.1 SOH defin

26、ition The shoulder obstruction height (SOH) is defined as the distance from the “Compressed seat cushion height” to the bottom of anything (generally a headrest) that projects forward from the upper seat back, see Figure 8. Key 1 SOH 1 SCRP 3 Top of track Figure 8 Shoulder obstruction height (SOH) 6

27、.3.2 SOH measurement method The shoulder obstruction height shall be measured in a CAD-programme in 2-D. The seat model needs to be entered into the CAD-programme with full cushion and headrest lines and contours. The compressed seat cushion lines shall be placed correctly according to the method de

28、scribed in paragraph 5.2.2 paragraph 3 in the 2-D seat model. A line parallel to the compressed seat cushion line shall be drawn to the forward in 2 in distance. The SOH shall be measured parallel to the compressed seat cushion line as the distance from the point where the 2 in-parallel line interse

29、cts the contour of the seat cushion (most probably headrest cushion) down to the SCRP (seat reference point) defined in paragraph 5.3. prEN 4723:2013 (E) 15 6.4 Table height over bottom cushion edge (TH) 6.4.1 TH definition The table height over the bottom cushion (TH) is measured between the two pa

30、rallel planes set up by the front lower edge of the meal tray table spread horizontally to the rear and a horizontal plane touching the highest edge of the seat bottom cushion, see Figure 9. Key 1 TH 2 Uncompressed cushion line Figure 9 Table height over bottom cushion (TH) 6.4.2 TH measurement meth

31、od Place a rigid sheet of metal or plastic in the size of the seat bottom cushion on the uncompressed seat bottom cushion to create the plane of the uncompressed top of the seat cushion with the plane perpendicular to the cushion. Measure from the front lower edge of the tray table perpendicular to

32、the front lower edge of the rigid sheet to produce the table height over bottom cushion measure. 6.5 Visual space (VS) 6.5.1 VS definition The visual space (VS) is defined as the distance from the eye of an anthropomorphic test dummy female 5%ile, male 50%ile and 95%ile male to the most rearward poi

33、nt of the seat or other next obstacle in front in TTL position described by a radius for dedicated pitches, see Figure 10. Key 1 VS 2 Top of track Figure 10 Visual space (VS) prEN 4723:2013 (E) 16 6.5.2 VS measurement method Set up two seats or seat rows at requested pitch in TTL-position. It is rec

34、ommended to measure with an anthropomorphic test dummy or equivalent person female 5%ile, male 50%ile and 95%ile male. At least place a SAE 95%ile male dummy or equivalent person firmly in the seat with back and thighs in realistic contact pressure to the seat cushions. Measure the possible radius f

35、rom the eyes towards the most rearward point of the seat or other next obstacle in front. Pitches shall be measured in full inch increments for the requested range as far as the seat is qualified for these. For economy class seats pitches from 28 in to 36 in, for premium class seats pitches of 34 in

36、 (863,6 mm) up to 40 in (1 016 mm) and, for business class seats pitches from 45 in (1 143 mm) up to 60 in (1 524 mm) shall be measured. 6.6 Knee space (KS) 6.6.1 KS definition The knee space (KS) is defined by the distance from H-point to backrest at a height of 25,6 in (650,2 mm) from floor level

37、of seat in front, see Figure 11. Key 1 KS 2 25,6 in (650,2 mm) Figure 11 Knee space (KS) 6.6.2 KS measurement method Set up two seats or seat rows at requested pitch in TTL-position. Place a SAE 50%ile male dummy firmly in the seat with back and thighs in realistic contact pressure to the seat cushi

38、ons. Measure the possible distance from the H-point towards the most rearward point of the seat in front or other next obstacle in front at a height of 25,6 in (650,2 mm). Pitches shall be measured in full inch increments for the following range as far as the seat is qualified for these. For economy

39、 class seats pitches from 28 in (711,2 mm) to 36 in (914,4 mm), for premium class seats pitches of 34 in (863,6 mm) up to 40 in (1 016 mm) and, for business class seats pitches from 45 in (1 143 mm) up to 60 in (1 524 mm) shall be measured. prEN 4723:2013 (E) 17 6.7 Foot Space (FS) 6.7.1 FS definiti

40、on The foot space (FS) is defined as the unobstructed height below the seat in front. It is measured from the airplane floor to the nearest obstruction vertically above on the airplane floor plane below the seat in front, see Figure 12. Key 1 FS 2 Top of track Figure 12 Foot space (FS) 6.7.2 FS meas

41、urement method Place a seat on a plane floor. Measure the unobstructed height perpendicular from the top of track beneath the seat to the nearest obstacle above the bottom line under the seat. Soft obstacles, such as life vest pouches are to be measured with life vest and without pressure on the obs

42、tacle itself. 6.8 Bed length in full recline position 6.8.1 Bed length in full recline position definition The bed length of a seat is measured between the low bed end and the high bed end. The low bed end is defined by a plane perpendicular to the low end bed surface and a plane perpendicular to th

43、e bed surface at the upper end, see Figure 13. It shall be measured from the internal side of the extended footrest to the internal side of the shell, at 60 in (1 524 mm) pitch. prEN 4723:2013 (E) 18 Key 1 Bed length Figure 13 Bed length 6.8.2 Bed length in full recline measurement method The seat i

44、s to be placed in full possible qualified recline. A tape measure shall be used to measure form the upper usable edge of the bed surface of the lowest usable end of the bed surface. 6.9 Armrest length (ARL) 6.9.1 ARL definition The armrest length (ARL) is measured for three positions: Forward length

45、 on the “straight” part (ARL for), complete forward length meaning “straight” and most forward bent tip (ARL for all) and the rear length behind the “straight” part (ARL rea), see Figure 14. Modern armrests usually show an ergonomic radius. 6.9.2 ARL measurement method ARL for: usable length of armr

46、est in flight direction: For comparable measurements radii of R 1 500 mm (R 59,055 in) shall be assumed. The intersection from the radius bend with the armrest shall be positioned such that the rear intersection lies on the intersection of the uncompressed backrest foam with the top of the armrest.

47、The measurement from the rear intersection to the front intersection indicates the ARL for. ARL for all: The complete forward length shall be measured from the rear foam/top of armrest intersection to the tip of the armrest. ARL rea: The usable length of the armrest against flight direction uses rad

48、ii of R 1 000 mm (R 39.370 in) and shall be measured rearwards from the intersection of top of armrest with uncompressed backrest foam to the intersection with the radius bend. prEN 4723:2013 (E) 19 a) ARL for b) ARL for all c) ARL rea Key aARL for bARL for all cARL rea Figure 14 Armrest length (ARL

49、) 6.10 Armrest width in total (ARW) 6.10.1 ARW definition The armrest width in total (ARW) is defined as the overall width of the armrest measured from one side to the other on the shortest diameter, see Figure 15. Figure 15 Armrest width in total (ARW) 6.10.2 ARW measurement method Use a slide gauge / calliper gauge and place the two cheeks either side of the armrest. Make the fixed cheek touch the one side of the outer surface of the armrest side and gently