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Really? Why then in Zustand der Maschine reads " Für die ersten Versuchsflüge befand sich die Maschine bis auf die Beschränkung der Querruderausschläge..."
That means that for the first tests flights a/c was standard 109F with wings of the G-model but aileron movement limitations (and an ejection seat, Germans were forefront in these).
Juha
Both the summary of the tests, dated 15 April 43 and the Flight report Nr. 901/274 on tests flown between 15 Feb and 12 March 43 (14 flights) clearly stated that the movement of the ailerons was halved. On the other hand looking again after a long time the Flight report Nr. 879/270 on tests flown between 28 Jan and 4 Feb 43, it didn't mentioned that and in the end demanded enlarged tail and limitation of the aileron movement to 50% before greater speeds were tried
Juha
Does it not seem strange that Kurfurst will take an Aussie document on 100 octane fuel that a person has read as 'gospel', yet questions a report that Glider has read on the Spitfire.
Now, the pages from Morgan and Shacklady presented by Kurfurst as "evidence" that the Spitfire was inherently prone to breaking up.
What was the point of reproducing these pages? There is nothing startling or new about any of this; the Spitfire was a mass-produced aircraft, subjected to operational wear and tear, not to mention production problems with wrong rivets etc.
Hello Kurfürst
So we agree that after 9 initial dives from 28 Jan to 4 Feb 43 the test team demanded that for higher speed dives the higher tail a la late Gs and Ks must be installed and aileron movement be limited by 50%.
After these mods 14 further dives were made from 15 Feb to 12 March 43 during which speeds up to Mach .805 was achieved.
Juha
No, Glider was not making this up - as Quill has described, the problems were caused by bad loading at squadron level, which led to problems of Spitfire Vs breaking up in a dive.
It's very easy for Kurfurst to make all sorts of claims, based on selected pages (including a set of "Pilot's Notes", the provenence of which is unknown...),
but I don't believe he had the experience of Quill in actually testing and approving the flight qualities of all marks of Spitfire.
Hello Kurfürst
yes, and after all the plane was not a normal F but F with stiffer wings of 109G.
Juha
Indeed Glider did not make that up, it was you who made it up, in a previous thread, and Glider was only quoting your claims, believing he read them in a report.
Indeed Glider did not make that up, it was you who made it up, in a previous thread, and Glider was only quoting your claims, believing he read them in a report.
Contrary to your claim, it had nothing to do with 'poor maintenance' at a squadron level.
( 1st para) This report forms part of an investigation...undertaken...as a result of several accidents to Spitfire V aircraft in service... (2nd para) The purpose of the investigation was to study the handling qualities of the Spitfire I and Spitfire V with particular reference to the dive and pull-out and tight turns. The effects of centre of gravity position, inertia weight...were to be obtained
Contrary to your claim, it was not limited to a 'few squadrons'. You refer to Quill having said that, which is false, and it is actually your own very liberal interpretation of his words: "However the importance of these loading instructions was not generally appreciated in squadrons and in the daily round of operational activity they tended to be disregarded. ... There was thus a real chance that, as of that moment, in almost every squadron in the Command Spitfires were flying in a dangerous state of instability...."
That is very far fetched compared to your claim that it only effected only a few squadrons - Quill states exactly the contrary.
The Mk V aircraft was...in full service with Fighter Command and,...a fair amount of additional operational equipment had gradually crept into the aircraft, most of it stowed within the fuselage. The aftmost acceptable position for the aircraft's centre of gravity had been fixed in the mormal course of flight testing by the firm and by the A AEE....Any rearward movement of the centre of gravity in service, for whatever reason, would begin to destabilise the aircraft. Therefore, for each sub-variant of the Mk V detailed instructions for the correct loading of the aircraft were issued to squadrons....However the importance of these loading instructions was not generally appreciated in squadrons and in the daily round of operational activity they tended to be disregarded." (pages 232-233 -Quill goes on to describe 65 Sqn's Spitfire Vbs which were found to be dangerously unstable)
"There was thus a real chance that, as of that moment, in almost every squadron in the Command Spitfires were flying in a dangerous state of instability....Up to that time there had been a distressing and increasing incidence of total structural failure of Spitfires in the air, which was causing great comcern in the MAP and especially at Supermarine." (pages234-235) Once the bobweights had been introduced and, in later marks, the modified mass balances on the elevators...it was statistically established that, as soon as the longitudinal stability of the Spitfire was thus brought under control, the problem of the unexplained breakings-up of aircraft in mid-air,...'softly and suddenly vanished away'." (page 238 )
What is interesting is that Quill points out that the majority of Spitfire Vs in service may have been dangerously unstable. If this was the case it is even more striking how few of them actually broke-up.
The report, one page of whick Kurfurst uses to imply that all Spitfires were inherently likely to break-up, is dated April-July 1942, and is one of those written during the investigations of the problems described by Geoffrey Quill.
and prompted another investigation in early 1942 (the paper I have also posted...)
Also contrary to your claims, the main cause of this defect was a faulty decision.
Morgan and Shacklady details these on page 143: the RAF was well aware that the Mk V may have problems with the CoG shifting as a result of added equipment (given that it was originally meant as an interim solution, basically a Mk I with a new Merlin 45 engine). The idea of adding inertia for the Mk VA and Mk VB was already considered in June 1941. As a result of dismissive comments from pilots from operational Squadrons with this installation (compaints of inertia weights making the Spit difficult to land and reducing its manouveribility), and trials at RAE it was decided to fit the inertia weights only to the Mk Mk VI, PR IV, VI, VII and Seafire I and II.
However, the inertia weights were not to be fitted I, II, and V in 1941, provided several items were to be deleted. In retrospect this was a faulty decision, and lead to several fatal accidents with the MK V involving total structural failure, and prompted another investigation in early 1942 ... Eventually the inertia weights were to be fitted after all, but not until several planes and pilots were lost to this design defect, that could prove fatal with the type's inherent low pitch stability characteristics.
- the 'selected' 1942 reports of investigating Spitfire structural failures in pullouts - surely those serviceman concerned and responsible because of these wing failures were a bunch of idiots, too...
Of course its very easy for me to make statements, because, unlike yourself, I am fully able to back them up with a mass of primary and secondary source??, and unlike you, I am not forced to desperately make up pitiful conspiracy theories...
This might be of interest. It should be noted that the words are very similar to Kurfurst's paper. He did post a link once and there were some problems with the paper he put a link to.
Namely it was dated June 1940 but gave the instructions for firing 2 x 20mm and 4 x LMG or 8 x LMG. Also it had the details for both 87 and 100 Octane fuel. In June 1940 the were no Spit IIB and they all had 100 Octane fuel.
The one I have posted is dated July 1940 and despite titled Spit IIa and IIb only gives the instructions for firing 8 x LMG. Also the fuel is only 100 Octane. This would be correct as in July 1940 all Spit II were in the front line and only had 100 Octane.
Kurfurst's paper must date from around June 1941 when Spit II were being issued to training command who did use 87 Octane.
It should be noted that all the above claims by Glider are made up on his own regards the contents of the manual - it doesn't contain anything like he says, in fact he just posted exactly the same manual I have...