Showing posts with label Jumo 004. Show all posts
Showing posts with label Jumo 004. Show all posts

Wednesday, 6 January 2021

Der Feldflugplatz Brunnthal



















[Full title: Der Feldflugplatz Brunnthal. Ausweich- und Schattenplatz der Luftwaffe 1944-1945] Norbert Loy, Verlag Veit Scherzer, Bayreuth, Germany, 2016, ISBN 978-3-938845-64-6. Illustrated, hardcover, published in German and English.

Cover image © by Norbert Loy/Verlag Veit Scherzer, 2016.


Many years ago, in what now seems like another life, I was romantically involved with a German woman who lived outside of Munich, in a village south of the Hofoldinger forest. I therefore made numerous return trips between Munich and her home on what is now the southbound Bundesautobahn 8 [German federal motorway 8] and once was the Reichsautobahn [Reich motorway] Munich to Salzburg.

None of these trips was ever ordinary to me, for a reason. In spite of the fact that the modern Bundesautobahn has been massively expanded with regard to infrastructure and width when compared to the original configuration of the 1930s and 40s, it still passes the hamlet of Brunnthal in a perfectly straight routeing and, north and south of the hamlet, is still flanked by woods. It is thus easy even today to imagine Luftwaffe aircraft hidden between the trees just beyond the shoulder of the Autobahn and using this very motorway for take-offs and landings. For the fields and the Reichsautobahn around Brunnthal served as an improvised auxiliary airfield during the last, desperate months of the war.

Numerous photos have been printed here and there throughout the years of Luftwaffe bombers, destroyers, nightfighters, and jets either concealed in the forest next to the motorway or on the immediate post-war aircraft scrapyard that Brunnthal airfield became after the cessation of hostilities. Some of these pictures were properly identified. But many weren't, and the story behind them, more often than not, was either told in mere fragments or left to misinformation or even obscurity. It is far easier to bemoan this situation, however, than to actually research the history of the Brunnthal airfield and collect the vast and widely scattered photographic evidence in order to compile a chronicle and properly integrate and connect all these pieces of the puzzle. Thankfully, local historian Norbert Loy has undertaken the effort, and the result is magnificent.

We had to wait for years for this beautiful book to appear. There were glimpses at photos and information in various publications, for decades. David E. Brown had written about some of the aircraft found at Brunnthal on an online specialist discussion forum in 2008, for example. And Norbert Loy himself published a comprehensive article on Brunnthal airfield and its few months of operations in German magazine Jet & Prop 4/2010. The information and photos provided therein were extraordinarily interesting. A footnote at the end of Loy's article announced the forthcoming publication of a full book of the author's findings. Given the article's content, it was clear that this had the potential to become an important and deeply intriguing work.

But years passed, and nothing happened. In fact, an initial announcement of the book subsequently disappeared again, indicating, perhaps, that it actually might never see publication. But in 2016, Loy finally released the results of his comprehensive research, under the title of Der Feldflugplatz Brunnthal. Ausweich- und Schattenplatz der Luftwaffe 1944-1945 [Brunnthal Airfield. Auxiliary And Shadow Field Of The Luftwaffe 1944-1945]. It is quite a massive book, at 392 pages and a format of 23 x 28 x 5 (!) cm, with 40 colour photos, 178 black & white photos, plus uncounted facsimile documents, colour profiles, listings/charts, and maps. Moreover, the book is thankfully published with both German and English text, a decision that should be applauded.

Loy's publication is indispensable for anybody seriously interested in late-war Luftwaffe aircraft and activities. Although new information regarding the Brunnthal airfield occasionally continues to surface (and the book's existence actually serves as one of the catalysts in this regard), Der Feldflugplatz Brunnthal is without question a requisite benchmark publication. Loy has structured the book very methodically. He commences with the establishment of the airfield in may/June 1944 and then details various components of the airfield's operations, such as anti aircraft installations, local aircraft maintenance, or the use of the Autobahn as one of the airstrips. All of this is expanded upon by means of recollections by period eyewitnesses, interspersed throughout the book.

Loy also makes extensive use of US sources regarding the discovery of the airfield and the resulting attacks on it. These operations form a significant and essential part of the narrative and serve to complete the understanding of the airfield's day to day subsistence. Allied wartime aerial reconnaissance photos of Brunnthal are analyzed and captioned in detail, which helps the reader to further visualise the relevant contents of the very detailed text.

But perhaps the most interesting part of the book, at least from the vantage point of this blog's author, is the collection and examination of all available photographic material in order to provide an exhaustive overview of all Luftwaffe aircraft that were located at Brunnthal airfield at the end of the war. This is the book's most substantial and most fascinating section. The mixture of aircraft types assembled at this rather makeshift auxiliary airfield is astounding, regardless of whether these aircraft had still flown active missions or arrived there by way of retreat from Allied troops advancing on other airfields. Quite a number of these aircraft were subsequently intentionally destroyed as Germany surrendered.

Loy identifies 57 different aircraft and attempts to put them into proper context, if possible, using markings, Werknummern, wreckage, and other evidence. There is the enormous Junkers Ju 290 A-7 9V+AB, for example, photos of which have appeared in a variety of past publications. There are various Junkers Ju 88 G-6 and Messerschmitt Bf 110 G-4 nightfighters, due to their equipment among the most modern aircraft in existence at the time. There are large and small transports, such as Siebel Si 204s and Ju 52s, there are Heinkel He 111 and Junkers Ju 88 A bombers, as well as Messerschmitt Me 410s, Junkers Ju 188s, and Junkers Ju 87s. And, perhaps most intriguing, there are numerous Messerschmitt Me 262 jet fighters and individual Jumo 004 jet engines.

Many of these aircraft are documented with as many photos as Loy could find, and these photos are fortunately often reproduced across full pages or even double-page spreads. Photo reproduction, on matte paper, is quite good. It must be repeated here, this book's photographic content is spectacular for any student of this topic. The final part of Loy's work provides a glossary of aircraft unit codes, a number of very nice colour profiles, further facsimile documents, flight logs, and colour photos of surviving artefacts recovered on site.

This is truly a book that cannot be recommended highly enough. It is a near inexhaustible source of diligently and internationally researched and appealingly presented material. The author must be commended for the immense effort he put into this publication. Upon seeing the scope of this book, it is easy to understand the delay in its publication. The waiting time was undoubtedly worth it.

Post script: Loy followed the publication of his book with a further article in Jet & Prop 2/2017, this time focusing solely on the Me 262 jet fighters found at Brunnthal at war's end.

Monday, 14 November 2011

Zwischen Leipzig und der Mulde - Flugplatz Brandis 1935-1945



Stephen Ransom, Stedinger Verlag, Lemwerder, Germany, 1996, ISBN 3-927697-09-5. Illustrated, softcover, published in German.

Cover image © by Stedinger Verlag, 1996.


This remarkable little book (112 pages, format 240 x 170mm, 90 illustrations) managed to turn quite a few heads in the Luftwaffe research community upon its release in the second half of the 1990s. There are quite a number of publications dealing with the airfields used by the Luftwaffe in World War II, most of them released in Germany. This is a very specialized field of interest, and most of these publications thus see only very small print-runs and are generally overlooked by the larger World War II aviation enthusiast audience, in favor of books on far more popular topics, such as Focke-Wulf Fw 190s, Messerschmitt Bf 109s, et al.

Many of these airfield publications are compiled by local historians in an effort to preserve parts of their town's history. They are typically created on a shoe-string budget (and sometimes without a professional design staff), they are frequently hampered by a lack of available/surviving photographic material, and they are often either published by small local publishing houses or even self-published. And yet they are a crucial part of Luftwaffe research, and they sometimes contain surprising new bits of information or unexpected photographic treasures. Typical examples of the above are, perhaps, Uwe-Rolf Hinze's Start und Ziel Neuruppin (Edition Rieger, Germany, 1996), Tony Haderer's Der Militärflugplatz Zerbst (Extrapost Verlag für Heimatliteratur, Germany, 2002), or Heiner Wittrock's Fliegerhorst Wunstorf - Teil 1: Der Fliegerhorst des Dritten Reichs: 1934 - 1945 (Libri Books/Heiner Wittrock, Germany, 1995). There are literally uncounted more.

One could thus be forgiven for assuming that Stephen Ransom's Zwischen Leipzig und der Mulde is simply another interesting yet unspectacular such release. But it isn't; the book's contents were simply breathtaking at the time of its publication, and, to some extent, they still are today. To begin with, not only is Zwischen Leipzig und der Mulde a very professionally made book, released by a well-known publishing house specialized in works of outstanding quality, but Brandis ranks among the Luftwaffe's most fascinating airfields. This is not least due to its use as a location of aircraft trials and test flights by Junkers and others.

In his introduction, Ransom writes that this book basically came into existence as a byproduct of information uncovered during his extensive studies of the Junkers Ju 287 forward-swept wing jet bomber. Zwischen Leipzig und der Mulde is thus filled with well-researched, solid information, augmented by often spectacular pictures. This begins already with the book's very cover which depicts the wrecks of Messerschmitt Me 163 B V45 rocket fighter prototype and a Henschel Hs 130 A high altitude reconnaissance aircraft.

Focusing on the final events of the war at Brandis, Ransom details the Allied reconnaissance over and the subsequent advances towards the airfield. Many of the most poignant photos reproduced in the book were taken by the US troops occupying Brandis in 1945. Interspersed for historical context are photos and illustrations depicting the earlier history of the airfield, such as Luftwaffe staff and aircraft in the second half of the 1930s und during the initial years of the war. While many of these photos are superb and fascinatingly detailed (such as the two hangar shots on pages 42 and 43, for example), it is probably the picture content from the final phase of the war which is most captivating. This includes German anti-aircraft guns, Jumo 004 jet engines on rail cars, as well as advanced and/or unusual aircraft such as the Me 262, Me 163, Ho 229 V1, or AS 6.

Most interesting, however, is the series of photos depicting the Ju 287. To the best of my knowledge, this was the first time an author was able to publish a number of remarkable and conclusive images (as well as the associated analysis) of both initial Ju 287 prototypes, the V1 and V2. Stephen Ransom has in the meantime of course expanded on that topic, by writing, together with Peter Korrell and Peter D. Evans, his milestone study Junkers Ju 287 - Germany's Forward Swept Wing Bomber (Classic Publications/Ian Allan Publishing Ltd., England, 2008).

Zwischen Leipzig und der Mulde is thus a truly noteworthy and important book, even if it has since become slightly outclassed by its author's own subsequent work. There are only a few nitpicks to note. In my humble opinion, for example, the photo on page 23 does not depict the wreckage of a Junkers Ju 88 in the foreground but rather that of a Heinkel He 177. Also, my copy of the book, purchased in March 1997, now shows signs of pages coming loose where they were glued to the spine. This in spite of explicitly careful handling over the years.

Saturday, 29 January 2011

Random Notes Regarding Focke-Wulf's Ta 183 Jet Fighter Concept



Above: attempted partial conceptual reconstruction of the instrument panel of the Focke-Wulf Ta 183. This incomplete and inevitably flawed draft is based on Günter Sengfelder's drawings of the the Jumo 004-powered variant at the planning stage of March 20, 1945, and the surviving photos of the full-size wooden mock-up of the Focke Wulf P VI Flitzer (see text below). (Drawing: German Aviation 1919-1945)

The Focke-Wulf Ta 183

Frequently dismissed as yet another speculative Luft '46 concept, the Focke-Wulf Ta 183 was, in actual fact, far more than just a paper project. In early 1945, the first prototypes of the Ta 183 were actually scheduled to be built, and the design of the aircraft had apparently progressed relatively far in its development. According to various sources, a full-scale, wooden mock-up, jigs, and perhaps even some subassemblies had been completed by war's end. And so had numerous technical and manufacturing drawings of what the finished prototypes were going to look like.

In spite of such reported gestation progress, the availability of solidly reliable prime-source material remains spotty to this day. In attempting to reconstruct some of the details of the Ta 183, one is left dependent on fragmentary information and circumstantial evidence, more so even than in the case of, for example, the Messerschmitt P1101 V1 (of which at least photos of the incomplete prototype exist). The depiction of the Ta 183 both in graphic illustrations and as scale models is thus often flawed. While this might be a moot point for many due to the fact that even the very first prototype evidently was never completed, careful examination of the sparse available material actually makes it possible to arrive at a fairly realistic idea of what the aircraft was actually going to look like.

Due to the protracted development schedule of the Heinkel HeS 011 jet engine, the initial examples of the Ta 183 were to be powered by the already mass-produced Junkers Jumo 004 jet engine. As depicted, these two early Ta 183 versions were to both share common features and be distinguished by a number of differences.

Junkers Jumo 004-powered Ta 183:

- What little is known of the cockpit of the Ta 183 seems to generally resemble the cockpit layout of the broadly Ta 183-contemporary Focke-Wulf P VI Flitzer jet fighter project, of which far more detailed information survives. Based on Günter Sengfelder's drawings of the Jumo 004-powered Ta 183 variant at the planning stage of March 20, 1945, and the existing detailed photos and drawings of the elaborate Flitzer mock-up, it is immediately obvious that the Flitzer cockpit area (including the instrument panel) seems to be similar to that of the Ta 183. If one looks at the development of other German aircraft of the period, it is perhaps reasonable to assume that a final mock-up configuration frequently reflected the actual initial layout of the subsequent prototype. Amongst other things, production orders were not least dependent on repeated inspections and improvements of the mock-up.

- The Ta 183's pilot's seat seems to be a typical Focke-Wulf design, not unlike the seat used in the Fw 190/Ta 152 series of aircraft. The seat itself seems to feature no head rest, although an Fw 190-style head rest seems to be indicated as part of the canopy.

- The canopy, too, seems to be a rather typical Focke-Wulf design. The bottom edge of the windscreen side panels on the Jumo 004-powered Ta 183 is a straight line.

- The inside of the air intake duct for the Jumo 004 jet engine seems to be initially encumbered by a lengthy bulge which extends almost halfway down the fuselage. This bulge serves to provide the space required for the retractable nose landing gear (the nose wheel remains vertical while retracted). The intake duct then curves down towards the engine.

- The rear section of the fuselage of the aircraft is slightly extended in order to accommodate the full length of the Jumo 004 engine.

- The space and proportions within the main wheel bays are dictated by the front section of the Jumo 004 jet engine, placed in immediate proximity within the fuselage. The forward end of the main gear wells is thus deeper than the rear end, requiring the main landing gear to be retracted forward and the retracted main wheels to rest right next to the intake duct.

- The main gear well covers are of an elongated, rectangular shape.

- The outline of the horizontal stabilizer is rounded at the tips, as is the top rear end of the rudder.

- The aircraft on its landing gear displays a very pronounced tail-low/nose-high stance. Again, many recent depictions of the Ta 183 miss this prominent and defining element entirely. This is a feature the Ta 183 shares with many early jet aircraft designs, as evidenced, for example, by the similar stance of the completed Messerschmitt P1101 V1 prototype, the Junkers Ju 287jet bomber (and its subsequent EF 131 and EF 140 developments), the Horten Ho 229 jet flying wing, the Focke Wulf P VI Flitzer project, the Ta 183-derived post-war FMA IAe 33 "Pulqui II" jet fighter, the Kurt Tank-designed Hindustan Aeronautics HF-24 "Marut" jet fighter, or even the Vought F7U "Cutlass" and F-8 "Crusader" jet fighters, and the LTV A-7 "Corsair II" attack aircraft.

Heinkel HeS 011-powered Ta 183:

- The Heinkel HeS 011-powered Ta 183 seems to have been designed with a different seat than that of the Jumo 004-powered variant. The seat of the HeS 011 version features head armour and seems very similar to the seat intended for the Flitzer jet fighter (of which photos exist).

In recent years, the Ta 183 has at times been depicted with a Heinkel-type Katapultsitz [ejection seat], but this seems to be entirely fictitious. Excellent photos of the tests of Focke-Wulf's own ejection seat, fired from a Fw 190, Werknummer 0022, SB+IB, have been published. Besides showing the seat during the insertion into the Fw 190, and during the actual ejection, there are also very detailed pictures showing the seat by itself. Again, this Focke-Wulf ejection seat prototype closely resembles the one depicted in the drawings of the HeS 011 version of the Ta 183. The only apparent difference is that the head armour as planned for the Ta 183 is angled forward.

Intriguingly, however, the catapult seat tested for the Focke-Wulf Ta 154 looks different yet again.

- Apparently, there are no published drawings or photos of the instrument panel, and the general cockpit layout of this version of the Ta 183 must be deduced solely on the basis of the general see-through side view drawings of February and March 1945.

- Again, the canopy seems to be a typical Focke-Wulf design. The bottom edge of the windscreen side panels, however, is now curved.

- The nose landing gear bay is of a different shape and length than the bay of the Jumo 004 version. The same thus applies to the associated landing gear doors. The nose wheel now turns upon retraction and is placed at an angle within the bay. This allows the air intake duct for the HeS 011 jet engine to remain unencumbered by any bulges. Due to the different proportions of the HeS 011 engine, the intake duct in this version is straight, from the nose of the aircraft to the compressor face of the engine.

- The rear section of the fuselage of the aircraft is devoid of any extension, due to the different dimensions of the HeS 011 engine.

- The main gear well doors of the HeS 011-powered Ta 183 are not rectangular. Instead, they taper towards the rear, starting about one third down the length of the doors. The space within the main landing gear bay seems to be arranged in a similar manner as on the Jumo 004-powered version.

- The main gear legs feature a distinctive kink near their attachment points to the fuselage structure.

- Again, the aircraft displays a very pronounced tail-low/nose-high stance.

- The outline of the horizontal stabilizer is rounded at the front and pointed at the rear.

- The top of the rudder features a sharper downward-angle and a more pronounced point than that of the Jumo 004 version.

- The aircraft seems to feature a shallow weapons bay which permits weapons to be carried semi-recessed. This bay appears to have angled inside walls. According to published drawings, it was to be possible to carry either bombs, drop tanks, or cameras in this bay. Apparently, the Jumo 004 version of the Ta 183 doesn't feature such a weapons bay.

(Text amended and expanded from sections of correspondence originally provided to Alan Griffith of now-defunct US scale model manufacturer AmTech, in 2001 and 2002.)