Comments by "Nick Danger" (@nickdanger3802) on "How The Spitfire Became An Aviation Masterpiece | The Birth Of A Legend | Timeline" video.

  1. Spitfire Mk.XVI Externally similar to the Mk.IX, it was powered by the Packard Merlin 266 and was flown with both normal and clipped wings. Total production of the type was 1,054, entering service in November 1944. Royal Air Force Museum
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  2. “The near parity of Spitfire and Bf 109 should take into account the fact that the Germans used 87 octane fuel while by the time of the Battle of Britain, the RAF had overcome the limitations of the Neutrality Act to secure from the United States supplies of incomparably superior 100 octane fuel." "Cannons would have been the preferred armament of British fighter aircraft designers, but they weren’t available. Instead, a relative plethora of machine guns was jammed into the wings of Hurricanes and Spitfires, eight in all, four on either side. These (Colt) Brownings had 300 to 350 rounds each, over 2,500 in all." side.https://www.forces.net/heritage/history/battle-britain-inside-story-how-we-beat-luftwaffe
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  3. "The Merlin XX incorporated a number of revisions based on early operational experience and the availability of 100 octane fuel from America." The Spitfire Society https://www.spitfiresociety.org/content-Merlin-engine,Spitfire
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  4. "It seems remarkable both that the British government made no effort to produce such fuel in Britain..." http://www.wwiiaircraftperformance.org/100-octane/Gunston-100-octane.jpg
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  5. The Spit was the product of an eight-year government subsidized float plane air racer program.
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  6. The Aerodynamics of the Spitfire J. A. D. Ackroyd Reference 10 quotes a report by Shenstone, dated May 1934 and after his visit to the United States, in which he comments favourably on the use there of NACA four-digit sections from the 22 and 24 series. The data from the NACA’s aerofoil testing programme at high Reynolds numbers in its variable-density wind tunnel had begun to emerge in 1930. The data for the 24 series appeared in a technical note (15) dated January 1932 and by December of that year a comprehensive NACA Report (16) brought together the data for a large selection of such four-digit sections. The aerofoil sections finally selected for the Spitfire were drawn from these NACA designs, in this case the NACA 22 series, 2213 at the root, 2206 at the tip: 2% camber located at 20% chord, t/c 13% at the root, 6% at the tip (10). In his contribution to References 11 and 12, Shenstone merely states that the NACA 22 series “was just right”
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  7. "The Spitfire Mk VIII. The use of the two stage supercharger provided a quantum leap in performance particularly over 20,000ft and provided effective opposition to the latest German fighter." The Spitfire Society - Spitfire page
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  8. "The Merlin XX incorporated a number of revisions based on early operational experience and the availability of 100 octane fuel from America." "It had been intended to utilise the evaporative cooling system but was replaced by the more reliable ethylene glycol liquid cooling system developed in the United States." "During the Battle of Britain it was discovered that the Merlin engine would cut out when pursing Me109s in a high speed bunt dive due to fuel starvation in the float controlled carburettor. Initial solutions involved inverting the aircraft into the dive and also the fitting a restrictor in the fuel supply line and a diaphragm known as Miss Shilling’s orifice, named after the female inventor (Beatrice Shilling) based at Farnborough at the Royal Aircraft Establishment. More permanent solutions involved moving the fuel outlet from the bottom of the carburettor to half way up and the use of fuel injection using a Stromberg (USA) pressure carburettor and finally an SU injection carburettor." The Spitfire Society Merlin page
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  9. "The engine suffered in early development and production with problems with the accessory gear trains, coolant jackets, cylinder head cracking, coolant leaks and excessive wear to the camshafts and crankshaft main bearings." The Spitfire Society Merlin page
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  10.  @bobsakamanos4469  Source ?
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  11. @20 21 “The near parity of Spitfire and Bf 109 should take into account the fact that the Germans used 87 octane fuel while by the time of the Battle of Britain, the RAF had overcome the limitations of the Neutrality Act to secure from the United States supplies of incomparably superior 100 octane fuel." "Cannons would have been the preferred armament of British fighter aircraft designers, but they weren’t available. Instead, a relative plethora of machine guns was jammed into the wings of Hurricanes and Spitfires, eight in all, four on either side. These (Colt) Brownings had 300 to 350 rounds each, over 2,500 in all." Battle Of Britain: The Inside Story Of How We Beat The Luftwaffe under Planes https://www.forces.net/heritage/history/battle-britain-inside-story-how-we-beat-luftwaffe
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  12.  @bradkalbfleisch5379 Produce a lot of oil in Canada in 1939 and 1940 did you? http://wwiiaircraftperformance.org/100-octane/banks-fuel.pdf
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  13.  tecdessus  As I understand it There was a "pilot" refinery with an unusual (to me) name. Production was limited and it was turned into a munitions plant, but I can not remember the year. I have not mastered the task of having more than one link in a comment in a way that allows the links to work, so I am not spamming and I will limit my replys to three. Rolls-Royce Aero Engines page 72 http://www.wwiiaircraftperformance.org/100-octane/Gunston-100-octane.jpg
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  14. I Kept No Diary Appendix II Fuel http://wwiiaircraftperformance.org/100-octane/banks-fuel.pdf
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  15. I would look at links if anyone would provide at least one.
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  16.  tecdessus  Did you find anything?
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  17. https://www.aerosociety.com/media/4953/the-aerodynamics-of-the-spitfire.pdf
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  18. As I understand it. Spits were built for the specific purpose of defending Britain. They were of little use at night during the Blitz, but too valuable to risk in North Africa until the Battle of Malta. They were used in what were called Rhubarb missions, flying over the parts of France they could reach, but faired no better than the Luftwaffe did over Britain. After the introduction of the Mustang I with the Allison engine they were largely replaced in that role and photo recon. With the arrival of the USAAF they operated as the first (shortest) leg of escorts and finished the war largely as fighter/bombers except for the much modified Seafire which was used for Combat Air Patrol by the FAA in the Pacific to the end of the war.
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  19. "Rolls Royce had been aware of the Bendix-Stromberg Pressure type of carburettor for several years and versions of the carburettor were used on many American engines including the Allison V-1710. Notably, Packard built their Merlins in the USA with a version of the Bendix PD16 from the very start of Packard Merlin production." ROLLS-ROYCE MERLIN CARBURETTOR DEVELOPMENT Chris Starr 2023
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