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The Spitfires larger wing may have been a detriment in the early years but it turned into an asset later on when it could not only house heavier armament
but could support larger increases in weight with less detriment to it's flying qualities.
Nothing wrong with that either.
1. It was a great aircraft, and one of the best piston fighters ever built (and a very beautiful looking one as well).
2. Everyone has their favorite aircraft anyhow.
My own belief is that the Spitfire was better more by luck than by actual design or intent. Both were different solutions to almost the same question/problem (but then so were the Hurricane and the Dw 520 and the P-36/P-40).
The bigger wing on the Spitfire was, in part, due to the official requirement. Once the RAF said they wanted 8 guns a small wing was pretty much out of the question. Mitchell guessed that the thin wing wing of the Spitfire would have less drag at high speed than the thick wing of the Hurricane. He didn't KNOW for absolute certainty. The Boffins at the RAE were assuring Camm that the thick wing section would pose no problem several years later on the Typhoon. The elliptical wing was a way of gaining interior volume in the wing as much as it was a way gaining efficiency. The elliptical wing offered more cord further out from the fuselage than a straight taper wing of equal size would. Mitchell needed the cord in order to get the thickness in inches that he needed in hide the landing gear in. As a for instance if you have an 80 in cord (distance front to back on a wing) a 16% thickness wing will have a maximum thickness 2.4 inches more than a 13% thickness wing with the same cord. Since Mitchell could not shrink things like the tires and needed certain minimum thicknesses at certain points and he had chosen a thin section wing he needed certain cord dimensions at certain points in the span to get those actual thicknesses. This gave him the ellipse ( I suppose he could have used a straight wing section out to the wheel wells and a then a succession of tapers, but that may have been not much easier to build than the ellipse). The wing section may have dictated the the gun layout. The thick Hurricane wing allowed for ammunition belts to pass over the tops of some guns to reach others. There may not have been room for this in the Spitfire wing which meant that the guns had to spaced to allow for ammunition between guns. This also pushed the last gun out near the wing tip so the wing needed a certain amount of thickness and cord to house the gun.
The 109s wing may have looked rather different if it had been required to hold eight guns.
The Spitfires larger wing may have been a detriment in the early years but it turned into an asset later on when it could not only house heavier armament but could support larger increases in weight with less detriment to it's flying qualities.
Airframe designers do not tell air staffs what armament to use, either in type of gun or numbers. They may provide more than the air staff requests but if more armament means lower performance their design stands a good chance of not being picked.
Airframe designers sometimes get to pick the engine and in other cases are told what engine to use. While any air frame designer could anticipate engines getting better ( more power for the same or little more weight) nobody in 1936 knew how fast or how far such improvement would go. Looking back at the last 10 years no designer would have thought that a 1935 fighter design would still be in production (even severally modified) 10 years in the future.
I think overall 1940-45 the Spitfires are as a whole better WW2 fighters from a pilot perspective, but I think the Messerschmidt is the better weapon taking production and maintenance into account.
"We could take a look at respective powerplants, too: in the time Spit received two stage Merlins (both powerful reliable), 109 either soldiered with DB 601E, or struggled with DB 605s (only 1,3 ata allowed for more then 6 months - the engine that killed Marseille?). It took DB some 2 crucial years to make an engine as 'good' as Merlin 60's series"
Mr Tomo Pauk said it well. It was the failure of gernan engines improvements during the mid war period that crippled both Bf109 and Fw190 during the most critical period of the war and reduced their post war fame.. They were never outclassed like A6M in PTO but during late 43-mid 44 were in clear diadvantage mainly because of their engines.
Which Spitfire could house heavier armament in wings? Examples please.
What define flying quality?
Now I see the error in logic is that if all things be equal, it would be true. For example, if both plane increase in weight by 500 kg, larger wing is of course better. But problem in practice is that one aircraft increase in weight by 250 kg, the other by 500 kg... and Spitfire increased more fast, late variants were very heavy. The reason was that bigger increase was large drag of large wing to start with - it need to be compensated, more fuel need carried, bigger engine need to be used to get performance.
Back to the long range range of the 109? I grant you the drag was a bit less on a F or G than than on an E but the engine actually used 1/3 less fuel for the same/similar cruise power?Early war Spitfire had engine of 600 kg, and fuel of 300 kg, late war Spitfire like Xiv had engine of 900 kg and fuel ca. 450 kg, but range was much less than early war Spitfire. Compare 109, early war 109 had engine of 600 kg, and fuel of 300 kg, late war 109 like K had engine of 750 kg and fuel of 300 kg, but range was some 50% greater...
Really? Spitfire starts out with better low speed handling and after all the additions are done has a wing loading 6% higher than an early war 109 and about 17% less than the late war 109. Actually numbers were actually closer as the 42 lbs./sq feet seems to be for the 109 carrying some sort of external load?Early war Spitfire had wing load of 25 lbs/sqere feet, early war 109 had 33 lbs/sqere feet - 33% better. Late war Spitfire had 35 lbs sq./feet, late war 109 42 lbs./sq. feet, Spitfire now 20% better only. So despite large wing, wing load detoriated greater and more fast on Spitfire.
Mr Readie
1) The site you give about Spit IX and Bf 109G is not to be trusted (e.g notice when it says that 1,42 ata was cleared)
2)Merlin was a superb effort but you must remember a) in 1940 time combination merlin/spit was inferior to DB/Bf109 .BoB was decided by RADAR and poor german tactics b) Till very late 1942 the combo Merlin/Spit V was still inferior to DB/Bf109f c)late in the war DB matched or even surpassed Merlin top power using inferior fuel and having also some superior charachteristics such as better specific consuption, lower cost, easy maintance , a motor cannon , smoother power curve,similar weight but bigger capacity. Also Complexity is not something good ...
Merlin had a smoother evolution curve, and that was decisive in 43/44 not so much in the spit but in P51. Had the DB605ASM appeared in autumn 43 instead of May 44 there would be little to choose between the two aircrafts for the entire war. Why did not appear? Poor planning?Poor personnel distribution? Poor priorities? Fuel availability?( If C3 was available for Bf 109s propably would manage better than 1475 PS earlier )
An interesting point
the italian fighter Re 2005 was observed that it was at least equal to Spit IX until mid altitudes (in mid,late 43) despite the fact it was using DB605A cleared for 1,30 ata and poor propeller! Both italians and enlish pilots made the observation.
Griffon was matched on paper by Jumo 213A when fitted with Mw50 but i admit there are questions of its building quality . But that was not a design fault. And again the Fw 190D was desperately late.
BMW 801 was in my opinion clearly inferior and eventually cancelled the good design of Fw190 . Reading Jg 26 War diary someone can form the image that Fw gave decent combat record despite its engine.
as for the normal or inverter engined ,performance wise , i am not sure ther was a important diferrence. But servicing was easier on the inverted
Italian fighters? So stylish but, regrettably useless in the real world.
Cheers
John
Hmmmmm<snip> The Spitfire <snip> where fact and fiction intertwine <snip>
I would say that two 20mm cannon and four .303 machine guns was a heavier armament than eight .303 machine guns, wouldn't you? Or two 20mm and two .50 cal Machine guns? And if you are comparing to the 109 and we leave the gunboats out once you get passed the "E" the 109 was always lacking in weight of armament (again, I say weight not effectiveness).
You do, of course, have actual numbers to back that up? As a general rule of thumb cutting the wing area by 25% will increase the top speed by 3%. So making a Spitfire wing of 180 square ft. (with in 3% of the 109s) would some how require hundreds less horsepower and all the other benefits you claim?
Back to the long range range of the 109? I grant you the drag was a bit less on a F or G than than on an E but the engine actually used 1/3 less fuel for the same/similar cruise power?
Really? Spitfire starts out with better low speed handling and after all the additions are done has a wing loading 6% higher than an early war 109 and about 17% less than the late war 109. Actually numbers were actually closer as the 42 lbs./sq feet seems to be for the 109 carrying some sort of external load?
Later Spitfires were not as nice to fly as early ones but then the later 109s weren't that nice to fly either. Has anyone described the flying characteristics of a late model Spitfire as "malevolent"?
Mr Readie
1) The site you give about Spit IX and Bf 109G is not to be trusted (e.g notice when it says that 1,42 ata was cleared)
Why leave the "gunboats" out may I ask? We only speak of about 20-25 000 Bf 109 (late F/G/K type).. just ignore them? "Gunboats" were not a different type, they all had option to put a gun in the wing, its like leaving bomb carrying Spitfires out. Why. All later Mark could carry.. like all Mtt could carry wing cannon - if needed.
You thesis is that Spitfire wing could take cannon in wing, so could Messerschmitt, actual Spanish Messerschmitt put same Hispano in wing, 109K-6 put MG 151/20 or MG 108 in wing etc.....
Yes, let us do some "number crouching"! As you see there is matematikal formulae to assess possibile changes. General rule of thumb, power increase by cube for given speed increase. So 3% speed increase will require 3%^3 = 9,25% more power to obtain same speed, all things equal. This also means at least 9,25% more fuel burned to get this power, means 9,25% fuel weight needs to be carried to get same speed and same range, and engine and its systems will be possible heavier, and make more drag as well.
The Spitfire relied on this power by excellent work of RR to keep competative with newer fighter airframe design like 109, 190. There was very little done for improve airframe aerodynamic, that tended to get worse - radiator drag was very increased in relation to early Mark, because engine needed much more power, and much more power require much more cooling, supercharger, supercharger intercooler (needs also seperate radiator). More supercharger consumes extra power, means extra fuel need carried.
Yes, back, I supplied data for that earlier, you just do not read :/ Do you want to supply your own data perhaps to contradict if its not true? My data is primer source, so reliable.
Yes that why I ask about how you define term handling. It is not same as wing loading, wing loading more-less define stall speed, but that is not all. Flow characteristics are defined by shape of wing profile, other empennage, devices like slat and flap, and characteristics of control surface. British seem to think very high of early 109E handling, more "user friendly" than early Spitfire I handling.
Was the Spitfire any real use after the BoB and MTO?
The later Spitfires XIV and XXI were over 7000lbs take off weight, where does that leave the wing loading?
I'd heard that was somewhat of a shortcoming and it left the Spitfire less maneuverable than earlier versions.
One might find that even the Mustang could hold a tighter radius than later spits, particularly at altitude.
That's not saying much, the Spit design was not particularly suited for high altitude deployment but it was the fastest climbing
allied fighter at that time and so it usually took the role of an interceptor and high altitude support.
The 109 saw similar upgrades but it was still relatively light.
Even with the advancements in MW50 and NO3 systems what was a realistic operational range of the later G and K models where allies were flying above 25,000ft?
I'd also heard that water injection was less effective above 30,000ft and required the use of a NO3 to see a noticeable performance boost.
Any thoughts on NO3 systems?