RT Journal Article T1 Doping at the Science Museum A1 Ben Regel A1 Jannicke Langfeldt A1 Louisa Burden A1 Mary Ryan YR 2016 VO 6 IS Autumn 2016 K1 doped fabric K1 historic aircraft conservation K1 doped aircraft K1 Flight gallery AB This article concerns the conservation of historic doped fabric aeroplanes in the static museum setting of the Science Museum’s Flight gallery. It reviews historic sources, primarily archival and scientific research papers, to examine what doped fabric aeroplanes are made from, and why these materials were selected. It also discusses current conservation methods used for treating tears in the doped fabric covering of aeroplanes, and considers the ethical and practical limitations of these practices. An overview of the doped fabric aircraft collection currently held by the Science Museum is also presented. NO Many documents in file AIR 1/1136/204/5/2237 at the NA make it clear that this was not a popular switch as the new varnishes took at least 10 hours to dry, making them unsuitable for field use. Eventually, therefore, older, more trusted materials such as PC10 and V84 were reinstated. NO A re-covering project is currently under way on a Wellington Mk 10B bomber at the RAF Cosford Museum. The scale and complexity of this object illustrates many of the challenges and issues discussed in this section. Further details of the conservation centre can be found at www.rafmuseum.org.uk/cosford/things-to-see-and-do/conservation-centre.aspx (accessed 1 December 2015). NO In file AIR1/1136/204/5/2237 at the NA, a communiqué from the officer commanding the No. 1 Aircraft Depot to the headquarters of the Royal Flying Corps dated 18 September 1917 states that a cellulose acetate dope applied above a cellulose nitrate dope resulted in bubbling of the surface. Another document in the same file, labelled ‘Notes on Dopes’, emphasises that the two classes of dopes based on acetate or nitrates should not be mixed. NO Letter from P Davison to L Hayward, dated 2001, in file T/1954-660 NO Letter from R Moore, dated 14 October 1975. Moore states that Museum staff planned to use cream pigmented dopes, whereas a clear, unpigmented dope would be more accurate because of the concern with weight reduction. PB The Science Museum Group SN 2054-5770 LA eng DO 10.15180/160605 UL http://journal.sciencemuseum.org.uk/browse/issue-06/doping-at-the-science-museum/ CR Atkins, W and Woodcock, L, 1917, The Effect of Atmospheric Conditions upon the Penetration of Dope into Fabric, and the Weathering of Unvarnished Doped Fabric in Egypt During Summer (London) CR Australia ICOMOS, 1999, The Burra Charter: The Australia ICOMOS Charter for Places of Cultural Significance (Burwood: Australia ICOMOS) CR Beesley, E, 2009, ‘Conservation and documentation of the Vickers Vimy, and learning review’, internship portfolio, UCL, London CR Berthumeyrie, S, Collin, S, Bussiere, P O and Therias, S, 2014, ‘Photooxidation of cellulose nitrate: new insights into degradation mechanisms’, Journal of Hazardous Materials, 272/2, pp 137–47, available at www.ncbi.nlm.nih.gov/pubmed/24685530 (accessed 9 December 2014) CR British Engineering Standards Association, 1918, British Standard of Reference for Aircraft Dope and Protective Covering (Including Specifications for Each Ingredient and Method of Application) (London: Crosby Lockwood & Son) CR Catoe, L E, 1962, in Catoe, L E (ed), Charles J. Cleary Awards for Papers on Material Sciences (Wright-Patterson Air Force Base: Directorate of Materials and Processes, Aeronautical Systems Division), pp v–vi CR Croker, J and Kemister, J, 2009, ‘The conservation of two First World War German aircraft’, AICCM Bulletin, 32, pp 15–24 CR Daniels, V D, 1999, ‘Factors affecting the deterioration of the cellulosic fibres in black-dyed New Zealand flax (Phormium tenax)’, Studies in Conservation, 44, pp 73–85 CR Dreyfus, H, 1949, ‘Composition suitable for aircraft dopes’, Patent No. CA458948 CR Drinker, P, 1921, ‘European practice in cellulose acetate and dopes during the war’, Industrial and Engineering Chemistry, 13/9, pp 831–6 CR Edwards, H G M and Falk, M J, 1997, ‘Investigation of the degradation products of archaeological linens by Raman spectroscopy’, Applied Spectroscopy, 51/8, pp 1134–8, available at www.opticsinfobase.org/abstract.cfm?uri=as-51-8-1134 (accessed 18 February 2015) CR Esselen, Jr, G J, 1918, ‘Airplane dopes’, Industrial and Engineering Chemistry, 10/2, pp 135–7 CR FAA, 1998, ‘Acceptable methods, techniques and practices – aircraft inspection and repair’, Advisory Circular No. 43.13-1B, FAA, Oklahoma City, OK, available at http://raanz.org.nz/techproject (accessed 21 September 2016) CR Firth, J, 2009, ‘How to bag a warbird: the re-covering of two German First World War aircraft’, Conservation of Three-Dimensional Textiles: Preprints: 7th North American Textile Conservation Conference, Quebec City, Canada, September 30 – October 3, 2009 (NATCC), pp 95–110 CR Groom, S, 1999, ‘Foundry welding goggles and lenses: a case study in cellulose acetate degradation’, AICCM Bulletin, 24, pp 29–38 CR Grossman, D B and Haven, L, 1944, ‘Aircraft part and covering therefor’, Patent No. US2356927 CR Hallett, K and Bradley, S, 2003, ‘Ultraviolet-filtered lighting and cellulose degradation: evaluating the effect of light exposure on ethnographic collections’, The Conservator, 27, pp 3–12 CR Hamilton, A, 1918, ‘Dope poisoning in the making of airplanes’, Monthly Review of the U.S. Bureau of Labor Statistics, 6/2, pp 37–64 CR Hon, D N -S, 1994, ‘Cellulose: a random walk along its historical path’, Cellulose, 1/1, pp 1–25, available at http://link.springer.com/10.1007/BF00818796 (accessed 21 September 2016) CR Hon, D N -S and Gui, T L, 1986 ‘Photodegradation of cellulose nitrate’, Polymer Photochemistry, 7/4, pp 299–310, available at http://linkinghub.elsevier.com/retrieve/pii/0144288086900576 (accessed 22 September 2016) CR Horelick, L A, 2015, ‘Traditional aircraft repair and minimal intervention: a balancing act’, AIC News Bulletin, 40/2 CR Inoue, Y, 1941, ‘Studies on the cellulose lacquers (3): weathering test of the doped fabrics’, Journal of the Society of Fiber Science and Technology, Japan, 17/12, pp 36–9 CR Jones, E and Hockney, M, 1944, ‘Full scale and laboratory trials of an acetostearate tautening dope’, Chemistry Note No. 730, Farnborough CR Kline, G M and Malmberg, C G, 1938, ‘Suitability of plastics for airplane dopes’, Industrial and Engineering Chemistry, 30/5, pp 542–9 CR Lambrinou, L, 2010, ‘Preserving a monument: the example of the Parthenon’, Conservation and Management of Archaeological Sites, 12/1, pp 60–74 CR Leskard, M, 2015, ‘A sustainable storage solution for the Science Museum Group’, Science Museum Group Journal, 4, available at http://journal.sciencemuseum.ac.uk/browse/issue-04/sustainable-storage (accessed 1 December 2015) CR McDougall, G J, 1993, ‘Isolation and partial characterisation of the non-cellulosic polysaccharides of flax fibre’, Carbohydrate Research, 241, pp 227–36 CR McManus, E, 1994, ‘Aircraft restoration practice and philosophy’, Cultural Resource Management, 17/4, pp 8–10 CR Meyer, A and Gearhart, W M, 1944, ‘Weather resistance of cellulose ester plastic compositions’, Industrial and Engineering Chemistry, 37/3, pp 232–9 CR Michalski, S, 2011, ‘Relative humidity: a discussion of correct/incorrect values’, in Caple, C (ed), Preventive Conservation in Museums (London: Routledge), pp 355–66 CR Mikesh, R, 1997, Restoring Museum Aircraft (Shrewsbury: Airlife Publishing) CR Odegaard, N, 1995, ‘Artists’ intent: material culture studies and conservation’, Journal of American Institute for Conservation, 34/3, pp 187–93 CR Padfield, T, 1969, ‘The deterioration of cellulose’, in Problems of Conservation in Museums: International Council of Museums, Publication No. 8 (Paris: Eyrolles), pp 119–64, available at www.conservationphysics.org/detcell/detcell.pdf (accessed 22 September 2016) CR Pearce, A, n.d., ‘Avoiding that shrinking feeling: adopting a chemically unstable material for conservation’, Big Stuff 2004, available at http://bigstuff.omeka.net/items/show/58 (accessed October 3 2016) CR Pröll, A, 1921, ‘Flexibility of bearing surfaces and stress on fabrics’, National Advisory Committee for Aeronautics, Washington, DC, available at http://naca.central.cranfield.ac.uk/report.php?NID=199 (accessed 21 September 2016) CR Quye, A, Littlejohn, D, Pethrick, R A and Stewart, R A, 2011, ‘Investigation of inherent degradation in cellulose nitrate museum artefacts’, Polymer Degradation and Stability, 96/7, pp 1369–76, available at http://linkinghub.elsevier.com/retrieve/pii/S014139101100125X (accessed 29 December 2014) CR RAF, 1915, ‘Report on the protection of aeroplane fabric’, Farnborough CR Ramsbottom, J, 1924, ‘Aircraft fabrics’, Transactions of the Faraday Society, 20, pp 295–302, available at http://pubs.rsc.org/en/content/articlepdf/1924/tf/tf9242000295 (accessed 27 December 2014) CR Reinhart, F W and Kline, G M, 1939, ‘Film-forming plastics: effect of solvents, diluents and plasticizers’, Industrial and Engineering Chemistry, 31/12, pp 1522–9 CR Robertson, T, 1916, ‘Doping aeroplane fabric, 22nd June 1916’, Farnborough Aircraft Park Report, available at National Archives, Kew, AIR1/1136/204/5/2236 CR Seery, M, 2013, ‘Saving paper’, Education in Chemistry (March), pp 22–5 CR Selwitz, C, 1988, Cellulose Nitrate in Conservation (Marina del Rey: The Getty Conservation Institute) CR Smith, W H, 1919, ‘Airplane dopes and doping’, National Advisory Committee for Aeronautics, available at http://naca.central.cranfield.ac.uk/report.php?NID=21 (accessed 22 September 2016) CR Staelens, Y and Morris, D, 2010, ‘Crossing the line – sustainability and large object conservation in musuems and heritage collections’, in Amoêda, R, Lira, S and Pinheiro, C (eds), Proceedings of the 2nd International Conference on Heritage and Sustainable Development, Évora, Portugal, 22–26 June 2010, Vol 2 (Barcelos: Green Lines Institute for Sustainable Development), pp 1183–92 CR Tesse, T -F, 1919, ‘Enduit et son procédé d’application pour tous genres de tissus et notamment les tissus d’aeroplanes’, Société Nauton freres et de Marsac, Patent No. République Française 499,993 CR Tsang, J -S, Speakman, R, Madden, O, Coughlin, M, Maiorana, A, Watson, J and Little, N C, 2009, ‘Degradation of “Lumarith” cellulose acetate: examination and chemical analysis of a salesman’s sample kit’, Studies in Conservation, 54/2, pp90–105, available at www.iiconservation.org/node/1191 (accessed 22 September 2016) CR Turner, A J, 1920, ‘Fabric: report on the work done during the war by the Experimental Fabrics Laboratory, Royal Aircraft Establishment’, in Jenkin, C (ed), Report on Materials of Construction Used in Aircraft and Aircraft Engines (London: HMSO), pp147–61, available at https://archive.org/details/reportonmaterial00jenkrich (accessed 21 September 2016) CR Vinas, M, 2005, Contemporary Theory of Conservation (Oxford: Butterworth-Heinemann) CR Walen, E, 1918, ‘Fabrics for aeronautic construction’, Part 1, ‘Cotton airplane fabrics’, National Advisory Committee for Aeronautics, Washington, DC, available at http://naca.central.cranfield.ac.uk/report.php?NID=17 (accessed 21 September 2016) CR Walen, E, 1920, ‘The structure of airplane fabrics’, National Advisory Committee for Aeronautics, Washington, DC, available at http://naca.central.cranfield.ac.uk/report.php?NID=63 (accessed 21 September 2016) CR Weissberg, S and Kline, G M, 1949, ‘Fire-retardant coatings for fabric-covered aircraft’, Industrial and Engineering Chemistry, 41/8, pp 1742–9, available at http://pubs.acs.org/doi/abs/10.1021/ie50476a052 (accessed 27 December 2014) CR Wendt, F, 1922, ‘Deterioration of airplane fabrics’, National Advisory Committee for Aeronautics, Washington, DC, available at http://naca.central.cranfield.ac.uk/report.php?NID=354 (accessed 22 September 2016) CR Wertz, J -L, Bédué, O and Mercier, J P, 2010, Cellulose Science and Technology (Lausanne: EPFL Press) CR Wharton, G, Blank, S and Dean, J, 2011, ‘Sweetness and blight: conservation of chocolate works of art’, in Caple, C (ed), Preventive Conservation in Museums 2 (London: Routledge), pp 456–68 CR Zugenmaier, P, 2004, ‘4. Characteristics of cellulose acetates 4.1 Characterization and physical properties of cellulose acetates’, Macromolecular Symposia, 208/1, pp 81–166, available at http://doi.wiley.com/10.1002/masy.200450407 (accessed 15 January 2015) WT Science Museum Group Journal OL 30