May 2026: The U-2 Over the Soviet Union, Secrets of the Spitfire, Sky Daddy, Beaufighter vs Flak Ships, Junkers Ju 88C, S.E. 210 Caravelle, Lavotchkin La-5, Polish Military Aircraft 1918-1939

With so many fantastic books to review, I was spoilt for choice. Here are some recent and not-so-recent books worthy of your time. This article is free to read, so please do share it. If you’re not following our Substack blog yet, you are missing out; it’s here.

Books mentioned: The U-2 Over the Soviet Union, Secrets of the Spitfire, Sky Daddy, Beaufighter vs German Flak Ships, Junkers Ju 88C Day and Nightfighters, S.E. 210 Caravelle: A Legends of Flight Illustrated History, Lavotchkin La-5 Vol. I, Polish Military Aircraft 1918-1939, The Hush-Kit Book of Warplanes.

The U-2 Over the Soviet Union (Hardback)

America’s Famous Cold War Spy Plane from a Soviet Perspective

When I spoke to SR-71 pilot BC Thomas, he noted that you should never refer to reconnaissance pilots as spies, as this classification puts them in far greater danger and offers fewer protections under international law if they are captured. The most famous reconnaissance pilot to be captured was Gary Powers. While flying for the CIA, he was a civilian, meaning he could be treated as a spy regardless of the terminology. When his CIA U-2 was shot down over the USSR in 1960, the event proved useful to the Soviet government. spun as evidence of the USA’s villainy, at a useful point during international conferences. As this book shows, the shootdown and the rather unbelievable cover story were both points of pride and mirth for the Soviet people.

“Small arms and edged weapons, money, precious metals…it is unlikely that the pilot needed it, as the US state department is trying to claim, to explore the upper atmosphere.”

Soviets found the cover story ridiculous. Powers’ belongings, notably including a silenced pistol with 200 rounds and ladies’ rings and watches, made it abundantly clear he was a spy. The book is full of fascinating details on the Soviet perspective. It quotes Pravda (back when official propaganda channels were called Truth), which published a cartoon with the following poem:

Winged predator full of arrogance

Circled in the Soviet sky

I had to calm him down! We knocked him down

In the future, do not climb into someone else’s sky!

This is a thrilling book, showing that not all is as popularly imagined in the West of Soviet-US relations of the time. With certain early aspects of the Cuban crisis far more incendiary than the U-2 shootdown. Essential reading for Cold War readers.

Order your copy here.

By Dmitry Degtev

Secrets of the Spitfire (Paperback)

The Story of Beverley Shenstone, The Man Who Perfected the Elliptical Wing

Forget the CF-105 Arrow; Canada’s greatest contribution to aviation was Beverley Shenstone’s design of the Spitfire’s elliptical wing. Lance Cole notes, “To Shenstone, the rate of turn advantage from a lower wing loading outweighed the quest for ultimate top speed, yet the ellipse provided both…” – the thin wing was handily decent for transonic flight and, along with the engine, a key contributor to the Spitfire’s success. Cole is bullish, verging on angry at two myths in particular: that the elliptical shape was copied or directly influenced by German designs (it is very different in concept, and Mitchell’s interest likely predates public awareness of the Heinkel) and that the wing form was chosen to cover the eight guns (it was already there when the concept had four guns, if I recall correctly). I like this anger, a welcome human touch in an engineering subject. Very enjoyable, insightful book.

Order here.

By Lance Cole
Imprint: Pen & Sword Aviation

Sky Daddy

Kate Folk

I noticed other reviews noting the book’s weirdness, but it was not weird. If this book were an aircraft, it would not be something insane from Convair or Republic; it would be something altogether more balanced, something of sound design, its structure understated and smoothly functional. It may have a provocative paint scheme, but don’t let me mislead; reviews that have described it as weird or insane are not right (though perhaps it’s weird because of the combination of Linda’s unusual desires, combined with the unpretentiousness of its prose). Though Crash, with its similar auto distraught machine lust, might be a comparison to reach for, this delivers more enjoyable titillation than shock. The universe of the book is sensible, if Linda’s isn’t. Lust is a driver, but friendship and finding a family in the world are at the core of a story that has much heart despite the seeming antisocial nature of her needs. This friendship-and-family element gives it an American feel, and it is an American novel. And Linda is not a psychopath; she is torn by her compassion and is often considerate, but her initial lack of ego and self-esteem deprives her of getting what she wants. She is a three-dimensional and likeable character. The monomania, or pathological obsession with a class of object, is typically seen as male or autistic, and the social shame Linda feels associated with her fixation (albeit one with a self-destructive erotic core) is comical to a real-life aeroplane obsessive. The origin story of her fetish is consistent with my existing understanding of this topic (I listened to one Savage Love podcast on the subject, so I’m no expert) – a formative sexual experience during heavy turbulence.

Aviation enthusiasts’ curse of bringing an aggressive (very literal) pedantic eye to any art form they encounter, I tried to avoid inflicting on my reading. The “I know a thing” thrill of noticing someone else’s alleged factual error is nothing to be proud of. Having said that, two things stood out when Linda, an airliner fan, said she loved the sound of turbojets. Was this a sophisticated love of vintage planes, or an ignorance of the character (which seems unlikely) or an error of the author? Likewise, was an airliner fan happy to use the designation A220 without noting its old name? In this case, I would say Linda’s largely respectful reverie for airliners may mean she was happy to accept the current name. Her love of some aircraft types over others is very satisfying, and she finds the Learjet 35 too small and pointy. There are precious few convincing arguments against the idea that everything has consciousness. With this in mind, perhaps her love is less mad than religion or soulless materialism. As a very slow, easily distracted reader, I was delighted by the almost complete lack of characters popping up after a 100-page absence, and my having no idea who they were. This didn’t happen. It was generous with its clarity, and I read and enjoyed many chapters in each session, far faster than with my normal books.

Were the crashes that obsessed her real? I will need to Google that.

The seeming one-way nature of Linda’s love seems like madness, but is it completely different to those who are not truly ‘seen’ by their partners? I would argue it’s not, and she at least at times entertains a more mundane explanation. A fun, well-written pervy book with planes, perfect as a holiday read.

Order Sky Daddy here.

Beaufighter vs German Flak Ships

North Sea and Mediterranean 1941–45

Matthew Willis (Author) , Jim Laurier (Illustrator)

Author Matthew Willis seems to have a good style-radar for what is en vogue in aviation history. Last year, he tackled the Swordfish, which is certainly enjoying a well-deserved renaissance. This year, he takes on the Beaufighter, another wartime name enjoying a comeback (with the much-anticipated Edward Rippith book on the subject out this year). This book describes the Beaufighters’ messy relationship with German flak ships. A tough bruiser of a plane, in the cold, rough North Sea, facing the ships tasked with protecting the German convoys from aircraft attack. One can only imagine the terror of a being on a flak ship facing fast, low-level attacks by Beaufighters, or being in a Beaufighter screaming towards the ship guns.

Well-researched, generously illustrated with tons of fascinating, brilliant diagrams, photographs, and other visuals, this is a worthy book well worth a read. This is number 151 in the excellent Osprey Duel series, which describes the action, tactics, and technologies of military machines facing their nemeses. I’m not totally in love with the use of drop-shadow on a three-view artwork (it is a fantastic three-view too), or it being put on a coloured background, but I also appreciate that you can be left with a lot of white hard-to-fill space with a nicely sized aircraft three-view, but this is a trifling point in what is an excellent guide and an must-have in your Beaufighter (or flak ship) collection. Strongly recommend.

Junkers Ju 88C Day and Nightfighters

Chris Goss (Author) , Gareth Hector (Illustrator) , Janusz Swiatlon (Illustrator)

‘We were quickly brought to our senses by the sound of shouting from the nearby village. A mob of screaming women and children were rushing towards us. Terror gave us the power to run towards a river some kilometres away, but the Russians closed the gap. Guth fell behind and was beaten to death by the mob…living on bark, berries and frogs, we slowly made our way west, but the strain became so great that Wirth began to go out of his mind, and on the seventh day tried to shoot me. Just as I wrestled the Luger from Wirth’s demented grip, a man emerged from a nearby wood.’

You can’t turn a bomber into a fighter. Well, apart from the Bristol Beaufighter. Oh, and the Douglas A-20 Havoc. The Osprey book dives into yet another fascinating exception to this rule: the Ju 88C. Author Chris Goss shows how the Junkers Ju 88C evolved from a speedy, adaptable bomber into a tough Zerstörer and nightfighter. Its large fuselage accommodated radar, plenty of guns and ammunition, and its 300+ mph speed kept it competitive. The book’s stories and pilot accounts really bring this transformation to life, as seen in the hair-raising extract above.

The Junkers Ju 88C night fighter was heavily armed and radar-equipped, carrying forward-firing cannon and, in later versions, upward-firing Schräge Musik guns. Its closest British rival in 1943 was the night-fighter version of the de Havilland Mosquito, the NF Mk XIII. The Ju 88C-6 was the larger and heavier aircraft. The Mosquito NF, by contrast, was lighter and significantly faster in service. Both fielded similar engine power, but the Mosquito’s lighter weight turned that power into speed and climb, while the Ju 88C prioritised equipment and endurance. In combat, those differences shaped tactics: Mosquito crews relied on speed and surprise, while Ju 88C crews operated more methodically in radar-led night defence over Germany.

The book is thoroughly researched and highly readable, with superb artworks throughout. Seen from 2026, when radicalised populist nationalism is again on the rise in many countries, this book is a sobering reminder—not just of the hell such regimes inflict on their enemies, but of the pointless pain and death they also bring to their ‘own’ people.

S.E. 210 Caravelle: A Legends of Flight Illustrated History by Wolfgang Borgmann

Schiffer Military Books

Lavishly illustrated with gorgeous memorabilia, this is a lovely hagiography of that most elegant of airliners, the French Caravelle. It may feature the ‘looks right, flies right’ cliche in the second paragraph, but we can forgive that, as this is a handsome book researched and made with great care. Marvel at gaudily colourful menu cards offering rich French fare, including Mignottes Caravelles and Brioche à la jet (I made neither up), sigh at period photos of this beautiful jet, and fall in love with Finnair art. The mind boggles at the work they must have done to source the images and then clear the photo rights. Clearly a labour of love, author Wolfgang Borgmann and designer Christopher Bower have done a superb job and reading this was a welcome break from my normal military reading. Here is a cool enough jet to even entice fighter fans. Sublime. Other aircraft covered in this excellent series include the P-39 and Black Widow.

Order here.

Lavotchkin La-5 Vol. I: Volume 1 (Monographs)

by Dariusz Paduch (Author)

We have been writing a series of articles presenting the case for aircraft X or Y being the greatest fighter of the Second World War. Of course, there is no real definitive answer, but each case presents different reasoning, a chance to explore a different angle. We have covered the Hellcat, Bf 109, Whirlwind, P-47, Corsair and Spitfire, among others. Each time I’ve done one, it’s been an opportunity to spend time immersing myself in the story of a particular aircraft and to pressure-test what I think I know and the common myths. Recently, I made the case for the La-5FN and quickly fell in love with this aircraft. As with most Soviet aircraft, research is a bloody nightmare of contradicting reports, information vacuums and terrible photos that look like they’ve been photocopied under the tracks of a T-34. I wish I had had this book during my research. Paduch has done a brilliant job of making sense of the story of this insanely agile fighter, the king of low-level air combat. Of course, many photos are grubby and grainy; this is par for the course with Soviet war stuff, but many of these grainy photos are gold dust, rare glimpses into the development, production and deployment of these amazing machines. Perhaps it’s apt that they are not monkeyed around with and coloured, and instead retain their flavour. A welcome splash of colour comes with the ten large, high-quality colour artwork profiles and many excellent line drawings. With technical depth and an intriguing development story in truly desperate times, this is a welcome book on an important aircraft that is often overlooked outside Russia.

Polish Military Aircraft 1918-1939

From Regaining Independence to Hitler’s Blitzkrieg

That Poland achieved anything in the 20th century, let alone designing brilliant, innovative aircraft, is remarkable given the tough times it had. As we noted in our article on the top 10 Polish aircraft, “The Independent nation of Poland is younger than the aeroplane itself, and spent its formative years in bloody wars with Ukraine and the Soviet Union, before invasion by Germany..” P.24s were exported to Bulgaria, Greece, Romania and Turkey, and the airliner production was put ahead of the PZL.50 Jastrzab

The dearth of English-language books on Polish subjects makes this all the more appealing. The book notes that in the early 1930s, Polish fighters were among the best in the world, but despite excellent designers, some unfortunate decisions were made.

An aside comes to mind: after the heroic help of Polish airmen in the Battle of Britain, the Western abandonment of Polish independence in exchange for a chance of post-war stability was a heartbreaking outcome for many. Today, despite a healthy Polish population in the UK, there is a strange absence of Polish characters on British TV. All I can think of is Zosia March (Holby City) and the two cafe workers from a Harry Enfield sketch.

The PZL.38 II twin-engined heavy fighter-bomber.

Order your copy here.

Rowland White reviews The Hush-Kit Book of Warplanes

I absolutely love this book. Seriously well-informed, seriously funny, authoritative and full of passion for its subject. The care lavished on aeroplanes that never even existed beyond the drawing board is worth the price of admission alone. Joe Coles always finds a fresh angle on a familiar subject, but he’s even better at bringing to life an unfamiliar one. Or just letting imagination run riot with unlikely flights of fancy that still somehow manage to ring true. Every word and every picture in The Hush-Kit Book of Warplanes has been chosen with a knowledge, enthusiasm and attention to detail that’s irresistible. No one writes about aviation like Joe Coles. We’re lucky to have him. The Hush-Kit Book of Warplanes is my aviation book of the year.

Order your copy here (if you wish it to be signed, please specify the name you wish it signed to in your order)

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Yes, they made steel aeroplanes

Steel is a strong metal alloy made by combining iron with a small amount of carbon, and it was first produced in usable form thousands of years ago, with early steel production dating back to around 1300 BCE. Heavy and difficult to form into complex shapes, steel seems an unlikely material for aircraft construction. While it is commonly used in small amounts in high-stress areas like undercarriages, using large quantities of steel is extremely unusual. However, there have been times when protection from heat, bullets, or aluminium scarcity (or fear of) forced manufacturers to turn to this heavy yet strong metal. The following brutes were built with more than 10% steel by weight—some significantly more. This list is by no means exhaustive, but we look forward to revisiting this fascinating subject in the future. Here are 10 Steel Marvels of Aviation.

Follow Joe Coles and his thrilling Hush-Kit aviation world on Substack, Twitter X or Blue Sky. He is the editor of  The Hush-Kit Book of Warplanes.

10: Henschel Hs 129

The Henschel Hs 129, a pugnacious-looking, rather ugly, German ground-attack aircraft of the Second World War, was notable for its extensive use of steel in its structure, primarily driven by its armoured design. Designed to operate at low altitudes in close support of ground troops, the Hs 129 needed substantial protection for the crew and critical components against small-arms and anti-aircraft fire.

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To achieve this, the aircraft incorporated a steel “armoured bathtub” around the cockpit, engine, and forward fuselage. This armoured shell, made from welded steel plates, accounted for a significant portion of the aircraft’s structural weight.

In addition to the armoured sections, steel was used in high-stress structural members, landing gear components, engine mounts, and various fittings. The rest of the airframe utilised aluminium alloys for the fuselage, wings, and control surfaces to offset the weight of the steel armour. Overall, steel comprised roughly 10–15% of the Hs 129’s total structural weight, which is unusually high for an aircraft of its era.

This heavy reliance on steel provided the pilot and vital systems with a degree of protection, allowing the Hs 129 to survive in high-threat environments. However, the steel armour significantly increased the aircraft’s weight, reducing speed, manoeuvrability, and operational range. This trade-off between protection and performance was a defining characteristic of the Hs 129’s design philosophy.

Other wartime German aircraft that used a surprisingly high amount of steel included the Ju 87 and, to a lesser extent, the Me 262.

9: Ilyushin Il-2 ‘Sturmovik’

Another ground attack aircraft that turned to steel for protection, the Ilyushin Il-2 “Sturmovik,” the most-produced combat aircraft of all time, was remarkable for its extensive use of steel compared to most aircraft of its era. At the heart of the design was an armoured load-bearing shell, often referred to as an “armoured bathtub,” which enclosed the cockpit, engine, fuel tanks, and part of the cooling system.

This shell was made of (often crudely) welded steel plates ranging from 4 to 12 mm in thickness. Unlike conventional aircraft,

where armour was added as non-structural plating, in the Il-2, the steel armour was fully integrated into the aircraft’s structure, carrying loads normally handled by aluminium frames.

As a result, steel accounted for a much larger share of the Il-2’s structural weight than in most contemporaries. Estimates vary, but generally about 15% of the total structural weight was made up of steel, significantly higher than the 2–5% typical in fighters like the Bf 109 or Spitfire.

This heavy reliance on steel allowed the Il-2 to withstand intense ground fire and remain flyable after sustaining damage. The penalty was reduced manoeuvrability and performance, but Soviet doctrine prioritised survivability over agility, making the Il-2’s high steel content a defining feature of its design. (Perhaps the biggest Soviet steel monster was the ill-fated Kalinin K-7.)

8: Fieseler Fi 103R ‘Reichenburg’

Desperate times call for desperate measures, but few measures were ever as desperate as the Fieseler Fi 103R. Consisting of a V-1 cruise missile with a cockpit crammed in behind the 900kg warhead, the pilot was expected to point the aircraft at its target before bailing out.

The standard V-1 was fast and cheap, but woefully inaccurate, proving able to (sometimes) hit a city-sized target but not much good against anything smaller. The addition of a pilot was hoped to make the weapon viable for attacking ships or other tactical targets.

Fieseler Fi 103R ‘Reichenburg’

Despite appearances, the Fi 103R was not intended as a suicide weapon. However, the prospect of survival was rated as “most unlikely.” The Fieseler Fi 103, or V-1 flying bomb, was primarily constructed from steel because aluminium and advanced alloys were scarce in wartime Germany. Steel was widely available, inexpensive, and easily formed into pressed or welded parts. This made mass production fast and possible with minimally skilled, and often forced, labour.

Steel also withstood the vibration and heat from the Argus pulsejet, while providing enough strength for catapult launches or bomber drops. Since the V-1 was a disposable weapon, lightweight alloys weren’t necessary. Its steel structure allowed durability, affordability, and simplicity—ideal for a one-way weapon designed for large-scale deployment.

7: Armstrong Whitworth A.W.41 Albemarle

The Armstrong Whitworth A.W.41 Albemarle had its roots in a far-sighted specification for an aircraft that could be easily manufactured by non-aerospace manufacturers. Conceived as a medium bomber but ultimately relegated to transport and glider-tug roles, its most distinctive quality lay in its construction. Unlike many contemporaries, the Albemarle was built with extensive use of steel tubing.

This decision was born of necessity, as aluminium was prioritised for frontline fighters. The Albemarle’s fuselage employed a welded steel-tube framework, over which metal and plywood panels were affixed. The approach reflected a pragmatic balance of resource management and industrial adaptability, ensuring production could be undertaken by firms with limited aeronautical experience.

In service, the Albemarle proved workmanlike rather than inspiring (though it notably featured a tricycle undercarriage). Its steel skeleton granted robustness, but it came at the cost of additional weight and complexity. Performance as a bomber was modest, yet its utility as a glider tug and transport was quietly invaluable, particularly during airborne operations in Europe.

The Albemarle thus occupies a peculiar niche in aviation history. While overshadowed by sleeker, faster contemporaries, its steel-based design underscores wartime Britain’s capacity to adapt materials and methods. Not glamorous, but steadfast, it symbolised the wartime ethos: functional engineering shaped by constraint, and endurance achieved through ingenuity. It is likely the Albemarle would have been a far bigger deal if they hadn’t got it so right with Mosquito.

6: Sopwith Salamander

The Sopwith Salamander was developed in 1918 as a ground-attack derivative of the successful Sopwith Snipe fighter and was notable for its use of steel armour. Sopwith Camel fighters had been used with great success as ‘trench fighters’ since late 1917, but losses, mainly to ground fire, had been heavy.

The Salamander was therefore designed to survive sustained small-arms fire while attacking enemy trenches. Utilising the wings and tail of the Snipe, the Salamander featured an armoured box made from a steel plate between 6 mm and 11 mm thick, containing the pilot and forming an integral load-bearing part of the forward fuselage.

The armoured steel box itself weighed 275kg, and steel accounted for more than 35% of the overall aircraft weight—an extraordinarily high percentage for the era. By comparison, most contemporary fighters used less than 5% steel. Initial plans to include forward- and downward-firing machine guns were abandoned due to the difficulty of aiming them.

Unfortunately, problems encountered with armour becoming distorted during the hardening process delayed production, and of the 1400 ordered, only 37 Salamanders had been built by the Armistice. Ultimately, a credible total of 497 examples were built, and some served into the early 1920s.

5: Budd RB-1 Conestoga

The Budd RB-1 Conestoga was conceived in the exigencies of wartime, when America’s demand for transport aircraft strained aluminium supplies. In response, the Budd Company, better known for railway carriages, ventured into aviation. Their proposition was audacious: to construct an all-steel cargo aeroplane, in defiance of conventional material practice.

The fuselage, fabricated from stainless steel panels, embodied the firm’s metallurgical expertise. Welding largely replaced riveting, a technique adapted from railway engineering. This gave the Conestoga a singularly robust, but very heavy, frame. The emphasis on steel symbolised industrial ingenuity under resource constraints.

Budd RB-1 Conestoga

Operational assessments, however, revealed limitations. The steel made the aeroplane markedly heavier than its aluminium contemporaries, reducing payload efficiency and complicating handling. Nevertheless, the Conestoga’s high-set tail and capacious rear-loading ramp provided innovations later echoed in post-war transport types. Though only a modest number were built, its design choices proved instructive. But by the time the RB-1 flew in late 1943, aluminium supplies had improved, making the steel design unnecessary.

The Budd RB-1 remains a fascinating episode in aeronautical history. It demonstrates how wartime necessity could redirect entire industries, and how steel—so central to shipbuilding and locomotion—briefly entered the skies. Though not a success in service, the Conestoga embodied bold experimentation in metal and method alike.

4: Bristol 188

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Mullets, stealth and which other Second World War Fighters Achieved This Holy Grail?

The P-51 Mustang has been described as the most decisive combat aircraft in history. Its ability to escort bombers deep into Germany conferred air superiority on the Allies ahead of D-Day. Two factors contributed to the Mustang’s success: it was relatively easy to manufacture and had an exceptionally clean aerodynamic design, famously including a highly efficient ‘laminar flow’ wing. But did the P-51 or any other combat aircraft truly find the holy grail of laminar flow, and did it even matter? And what does the story tell us about the unique nature of American warplanes to this day?

Laminar flow is elusive, difficult to achieve in practice, and often misunderstood, yet the concept is simple. Imagine water flowing over a smooth rock in a stream. If the water glides quietly in neat layers, that is laminar flow—calm, ordered, and efficient. Strike a jagged edge, and the water breaks into turbulent, swirling eddies. Air behaves similarly over a wing. Laminar flow is a state of calm.

Laminar flow reduces drag—the invisible resistance slowing an aircraft—resulting in higher speed, greater range, and lower fuel consumption. From the earliest days of aviation, engineers understood the concept. In practice, achieving laminar flow over a significant portion of a wing was extraordinarily difficult.

In aerodynamic terms, the goal was to keep smooth flow over a substantial portion of the wing’s chord. The wing chord is the distance from the leading edge or front of the wing to the trailing edge (the back of the wing). If you can keep forty per cent or more of the chord remaining laminar before transition to turbulence, you get pretty magical effects. In wind-tunnel experiments, laminar wings promised dramatic reductions in drag. By the late 1930s, laminar flow had become one of the most alluring ideas in aerodynamics, especially as aircraft speeds approached the limits of conventional design.

Business at the front, party at the back

The front of this man’s hairstyle is smooth and orderly, like laminar flow air; the back is turbulent. A laminar flow wing is akin to a classic mullet in which the orderly section goes as far back as possible.

Aircraft generate lift because air moves faster over the upper surface than beneath it, creating a pressure difference (some contrarians will argue with this, but let’s leave that debate for another day). Early-20th-century wings had maximum thickness near the leading edge, producing strong pressure gradients that quickly tripped the boundary layer into turbulence (as in the Curly Mullet above). While turbulence aids predictable handling and prevents flow separation, it increases skin-friction drag.

Laminar-flow airfoils managed this by moving maximum thickness further aft—sometimes forty or fifty per cent of the chord. This allowed smoother pressure recovery (i.e., air pressure rises more gradually along the wing, thereby keeping the airflow smooth rather than breaking into turbulence) and extended laminar flow.

Wind-tunnel experiments confirmed the benefits under ideal conditions: smooth surfaces, precise shapes, and undisturbed airflow. However, many wondered whether real operational aircraft could support such a clean, smooth wing . Military flying exposed wings to exhaust residue, dirt, rain, and maintenance imperfections, never mind guns.

Research establishments in Britain, Germany, the United States, and Japan studied laminar flow. In Britain, the National Physical Laboratory and Royal Aircraft Establishment at Farnborough tested airfoil sections, boundary-layer behaviour, and pressure distributions. Germany experimented with laminar-flow flying wings, such as the Horten H.VIII. The United States developed the NACA 6-series airfoils, which would underpin the P-51 Mustang. Japan pursued laminar-inspired designs through Nakajima and Kawanishi, producing some of the most aerodynamically sophisticated piston aircraft of the war.

The United Flow States

Among operational fighters, the P-51 Mustang exemplified laminar-flow wing theory. Its wings used NACA 6-series airfoils with maximum thickness around 40–45% of chord. This delayed boundary-layer transition, reducing drag at high speed.

The Bell P-63 Kingcobra also employed laminar-inspired airfoils. The jet-powered P-59’s laminar wing, however, remained mostly theoretical; surface imperfections, intake interference, and early jet installation issues caused laminar flow to break down quickly. Despite these limitations, the Mustang realised significant aerodynamic benefits, particularly at high altitude and cruise, directly contributing to its long-range escort capabilities.

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Flight tests on a P-63A in 1945 highlighted the fragility of laminar flow. Boundary-layer transition occurred near the leading edge, limiting laminar extent. Reducing surface roughness—careful sanding, priming, and painting—extended laminar flow to 60% of chord in controlled conditions, illustrating the extreme precision required to achieve operational laminar wings.

Other American aircraft, like the B-24 Liberator with its Davis wing, showed laminar-like characteristics in wind tunnels, but real operational benefits were minimal. True laminar-flow performance remained rare outside of purpose-built designs like the Mustang.

The P-51’s success was the result of holistic thinking. Its entire airframe—thin, lightly loaded wing, flush riveting, smooth surface finish, and efficient fuselage—was optimised to support laminar flow. Brilliant drop tanks further increased range, enabling the Mustang to dominate long-range escort missions.

Britain, the Tempest and the Spiteful

Before we look into this, I must say I have a pet hate of.. READ THE REST OF THIS FASCINATING ARTICLE OVER ON OUR LOVELY SUBSTACK HERE.

Happy New Year!

A year (and a gazillion maiden flights of new Chinese aircraft types) has passed.

2025 was a bugger for many, but it also had some cool moments in the world of aviation. Experimental aircraft are weird again, which is wonderful. Three engines is fashionable. Which is pleasingly mental. After years of aircraft looking similar and more or less F-35-esque, a new era of wild X-planes and oddities across all categories is upon us, and it is pleasingly ’50s in aesthetic. I wish you all a lovely 2026 full of optimism and giggles (though please don’t do that horrible snorting laugh you do).

As ever, I thank you for making this mad effort worthwhile, your kind words, fascinating insights and unbridled monomania make this a joy. I’m tapping away until 2 AM most days to give you great slabs of aviation news, history, interviews and general silliness. I’ve been low-profile in communication on the book, as much depended on factors beyond my control, which I’ll explain. I tried to avoid vague updates (though there will be some vagueries in this post and the use of the opaque word ‘soon’). Ok, let’s see what’s going on behind the rusty hangar door at the Hush-House…

This site

This site is being revamped! As you probably know, a lot is happening on the Hush-Kit Substack (do subscribe if you haven’t yet), and I’m planning for this site (hushkit.net) to get just as busy soon. It will have a fresh lick of paint and a hearty series of upgrades. You will be smothered in a ton of new articles here soon.

Hush-Kit Book of Warplanes Vol 2

I will be contacting supporters of The Hush-Kit Book of Warplanes Vol 2 soon with an update. Please do not contact me directly via the comments section or social channels. I would love to respond to everyone individually, but replying to a high volume of messages across multiple platforms is impossible and will slow the project (this is essentially a one-man operation). A huge amount of work is taking place to get the next Hush-Kit book out, and you will be contacted directly at the next stage. I’ve kept updates to a minimum because I don’t want to overpromise and would rather wait until I can provide concrete information (do keep an eye on old e-mail accounts if you have recently changed, I’ll put Hush-Kit in the subject title if you wish to tell your spam filter). If you did miss the last email, you have not missed anything important. I won’t bore you with the details, but know that cool stuff is happening, and you will be the first to know. What I will be doing soon is setting up a Vol 2 mailing list, as I know the lack of comms is annoying.

YouTube

Hush-Kit’s new brilliant video guy, The Wrench, and I have been working on a new YouTube video, and The Wrench is bringing slick editing skills, combined with mouthwatering historical footage. It’s very close now. So stay tuned to the YouTube channel.

Live events 2026

There will be more than this! But I’ll just stick this one down for now.

21st May 2026 Bristol Central Library 12.30-1.30pm

Joe Coles talk

How Bristol Aircraft Helped Defeat Fascism:

Forged in Bristol: Aircraft That Helped Crush Fascism

This witty, well-informed (well, I would say that) talk explores the pivotal role of Bristol Aircraft in the fight against fascism during the Second World War. From the factory floors of Bristol to the skies over Europe, Bristol’s engineers, designers, and pilots collaborated to create aircraft that would turn the tide of the conflict. We will trace the ferocious fighting of the outmatched Bristol Blenheim and the thumping thuggery of the Bristol Beaufighter, examining what made Bristol aircraft so special and their remarkable wartime exploits.

Through stories of daring missions, technical breakthroughs, and the sheer scale of wartime production, the talk highlights how a single city and its industrial ingenuity contributed to defeating tyranny. Attendees will gain insight into the engineering challenges, strategic importance, and human stories behind Bristol Aircraft, seeing how these machines were not just tools of war, but instruments of freedom.

If you can stomach the festering evil of Twitter, I’m there . Also available on BlueSky:

I can occasionally be found being terrible on Instagram too.

Yours in radial, V, inline, H and Wankel,

Hush-Kit

I have sent an important email to you so please check your spam folders. I can only email 500 people a day, so only emails starting with A-D have been sent today. The rest will follow this week.