America’s Largest PISTON Bomber Was Obsolete Before It Even Flew | Douglas XB-19

追加: 2026-05-31

[00:00:00]In March of 1938, the United States Army Air Corps issued an official death sentence to the most ambitious aviation project of the decade. On the desk of the corporation's head, Donald Douglas, lay an order to immediately cease funding the secret program to create an ultra long range bomber. On paper, this airplane was to become the absolute triumph of American engineering. In reality, it had turned into a black hole for the military budget. Military analysts calculated the basic aerodynamic figures and reached a shocking conclusion. The giant machine on which years of development had already been spent had become obsolete even before the first frame had been riveted together at the factory. The maximum design speed amounted to a mere 224 mph.

[00:00:53]For the latest German and Japanese fighters, this clumsy aluminum leviathan would have been simply an expensive target for live fire practice.

[00:01:03]The logic of the market and of war demanded that the unfinished fuselage be sent straight to the press. But Donald Douglas did what no accountant could understand. He personally traveled to Washington to defend a project that was guaranteed never to take part in any real combat. The head of the company begged the generals to let him finish building an airplane that was already dead. The reason for this paradoxical stubbornness lay in an engineering impass, the way out of which was to change the laws of aerodynamics forever.

[00:01:40]3 years earlier in 1935, the company's chief designer, Ed Burton, received from the military a technical requirement that resembled outright mockery. The army demanded the creation of a bomber capable of taking off from the American coast, crossing the Atlantic Ocean, dropping 20 tons of explosives on Europe, and returning without refueling.

[00:02:04]20 tons was the weight of a complete heavy tank of that time, which had to be lifted into the stratosphere and carried a distance of 5,200 m.

[00:02:16]To achieve such range, the wings had to be filled with literally a small lake of aviation fuel. And here, Ed Burton at full speed crashed into the merciless physics of the square cube law.

[00:02:30]Increasing the volume of the fuel tanks required a radical increase in wing area. A large wing required a massive internal loadbearing structure. The additional metal catastrophically increased the weight of the empty aircraft. On Ed Burton's drawing board, the weight of the airplane swelled rapidly until it reached the horrifying mark of 162,000 lb.

[00:02:57]The problem was that aviation engineering of the 1930s had run hard into the ceiling of materials science.

[00:03:05]Burton had to stretch the wingspan to 212 ft. That is the width of a 20story apartment building. To make a riveted Duralaman building fly, power plants of monstrous output were required, which simply did not exist in the world.

[00:03:24]Aerodynamic thinking had outrun engine building by a full decade.

[00:03:29]The designer had no choice but to install in the project four of the latest yet still critically underpowered 18cylinder radial right duplex cyclone engines.

[00:03:40]Each was supposed to deliver 2,000 horsepower.

[00:03:44]The attempt to move a 73ton machine with these motors resembled an effort to start a loaded freight train with a team of four thoroughbred raceh horses.

[00:03:54]The airplane acquired the aerodynamics and grace of a river barge.

[00:03:59]Ed Burton saw these numbers clearly. He knew that armor would have to be cut to save weight, that the turning radius would be measured in miles, and that the rate of climb would turn pilot's hair gray from strain. By the time of the crisis meeting in 1938, the experimental bomber 19, conceived as the ultimate weapon of retribution, had turned into a flying laboratory of the absurd.

[00:04:25]The military refused to pay for a slowmoving target. Competitors were already sketching far more compact and faster pressurized designs. The project stood at the edge of clinical death.

[00:04:38]Yet, Donald Douglas understood something the army officials did not see. He knew that if this gigantic piece of aluminum were cut into scrap, the aviation industry would lose something far more valuable than a bomber. Inside this clumsy, hopelessly obsolete airframe lay a proving ground for technologies without which America would lose the coming war. Douglas offered the generals a deal. Turn the combat machine into the most expensive and complex test stand in the history of the planet. To obtain critical data on the operation of ultra high power radial engines and the behavior of massive structures under extreme loads, the engineers would have to solve the task that bordered on madness.

[00:05:24]They had to make this metal wrapped paradox lift off the ground and not fall apart in the very first second of flight.

[00:05:32]In May of 1941, the Douglas Company assembly shop in Santa Monica resembled not an aircraft factory, but a gigantic shipyard for building ocean liners.

[00:05:44]Chief designer Ed Burton stood on the scaffolding and watched tensely as engineers tried to join the 132 ft fuselage to the central wing section.

[00:05:55]The wingspan reached 212 ft. Existing premises physically could not accommodate this structure, riveted together with 3 million rivets.

[00:06:06]The company had to erect a specialized hanger from scratch, spending an astronomical sum from the budget solely for the assembly of one airframe.

[00:06:16]The empty weight of the machine created such a concentrated load that standard formulas for calculating supports proved useless. Integral tanks holding 10,800 gall of aviation gasoline were located in the wings. This was 29 tons of flowing explosive liquid aggressively pressing on the loadbearing structure of the spars. The load on the main landing gear axle repeatedly exceeded the weight of a heavy artillery piece. When Burton turned to suppliers of aircraft tires, he received a dry technical refusal. In the United States of America, there existed no industrial molds for casting tires capable of withstanding the crushing impact of 73 tons of metal on concrete at landing speed. The project was saved from shameful closure by the Firestone Company. Its chemical engineers had to completely reinvent the process of vulcanizing gigantic volumes of synthetic rubber in order to create unprecedented tires with a diameter of exactly 7 ft 11 in. Inside the thick rubber mass, they wo a complex loadbearing network of strong steel threads, preventing wheel rupture under monstrous internal pressure and extreme friction at first contact with the asphalt. But casting the unique wheels was only a small part of the engineering nightmare. The retraction and extension mechanism of the landing gear turned out to be so geometrically massive that the onboard hydraulic pumps required dozens of seconds of continuous pressure buildup to move it. Sensors of the strut positions consistently gave false failures due to powerful resonant vibrations of the long fuselage.

[00:08:04]To avoid a catastrophic landing with the gear retracted, Burton introduced into the design a solution bordering on industrial paranoia.

[00:08:12]A dedicated analog audio system was mounted on the flight engineer's instrument panel. Meters of wiring ran from the dark niches of the landing gear into the pressurized cabin to microphones.

[00:08:24]The flight engineer dawned heavy headphones and in absolute silence listened to the scraping of the steel rods and the dull hiss of hydraulic fluid. Only by the acoustic signature of the hard metallic impact of the locking catches did the crew know for certain that the 20ton ton structure had locked solidly in place and the airplane would not crash onto its duralin belly.

[00:08:49]The internal architecture of the experimental bomber 19 completely shattered every established cannon of military aviation. This airplane was designed and built as an autonomous airborne submarine.

[00:09:03]Ed Burton had coldly calculated that on a transatlantic route exceeding 5,000 mi, any mechanical failure meant certain destruction of the machine over icy waters.

[00:09:14]Therefore, he incorporated into the drawings an unprecedented level of physical access to critical assemblies.

[00:09:21]The thickness of the root section of the enormous wing allowed a technician to walk upright inside it. Narrow service tunnels lit by dim incandescent lamps were cut through the loadbearing elements of the spars and ribs. During flight at cruising altitude, the flight engineer could leave the cockpit, squeeze through these aggressively vibrating metallic intestines, and reach the rear sections of the engines running at full strain. Inhaling toxic vapors of high octane fuel and acrid smoke from hot oil, risking the permanent loss of his hands from proximity to spinning shafts, the technician had to wield a heavy wrench, fixing leaks from ruptured lines while still airborne.

[00:10:04]Inside the fuselage was a full-scale metal galley for preparing hot meals and an isolated compartment with eight bunks. A basic crew of 16 plus eight reserve crew members enabled continuous multi-our combat penetrations.

[00:10:20]Electric kitchen stoves, thick mattresses, food stores, and soundproof bulkheads mercilessly consumed hundreds of pounds of precious payload.

[00:10:30]The most dangerous time bomb was hidden inside the four engine necessels on the leading edge of the wing.

[00:10:38]Control of the surfaces of enormous area was affected through a primitive system of steel cables with a total length of nearly 2 m. To move the elevators at all, the pilot had to exert colossal physical effort, desperately fighting the density of the oncoming airirstream.

[00:10:57]The heart of the clumsy Leviathan became the latest Wright 3350 duplex cyclone radial engines, each of which had 18 cylinders.

[00:11:08]On the factory test stand, each unit reliably delivered 2,000 horsepower.

[00:11:14]But for the experimental bomber 19, these 8,000 horsepower were catastrophically insufficient.

[00:11:22]The ratio of total thrust to maximum takeoff weight stood at a critically low level. The engineers knew perfectly well the cruel truth they carefully concealed behind graphs. The engines were operating at the very limit of allowable temperature regimes merely to keep the 73ton piece of metal in the thin sky.

[00:11:43]The architecture of the tight cowlings physically failed to provide enough flow of cold oncoming air to save the second rear row of cylinders from overheating.

[00:11:54]At maximum takeoff revolutions, the thick oil began to boil instantly, and the forged components of the piston group expanded to the point of inevitable thermal seizure. The colossal weight required the pilots to keep the throttles wide open at alarming manifold pressure values even in steady level flight. Burton had designed a brilliant airframe with phenomenal structural strength reserves. Yet it became a helpless hostage to primitive thermodynamics.

[00:12:25]The harsh mathematics of heat losses and colossal drag conclusively proved every extra minute of operation of these most powerful engines inexurably brought their glowing steel components closer to the point of sudden and irreversible destruction.

[00:12:42]On the 27th of June 1941, the chief test pilot, Major Stanley Umstead, took the left seat in the unpressurized cockpit of the experimental bomber 19 on the concrete runway of Clover Field. To the citizens of the United States of America, this morning looked like a triumph of national industry. Radio stations carried live broadcasts, gushing with enthusiasm while describing the massive military airplane. But inside the cockpit, there was no room for pride.

[00:13:17]Umstead looked at the needles on the instrument panel and saw the dry mathematics of catastrophe.

[00:13:24]He realized that he was sitting in the nose section of a 73tonon tank filled with high octane fuel. Behind him on thick engine mounts vibrated four right 3350 duplex cyclone radial engines which already at idle were displaying alarming temperature rise.

[00:13:46]The major slammed down hard on the brake pedals locking the 2 m Firestone wheels solid and ordered the units brought to takeoff power.

[00:13:56]8,000 horsepower crashed into the structure. The frames of the riveted fuselage groaned under the torque, and the acoustic shock shattered the silence.

[00:14:07]When Umstead released the brakes, the expected surge did not come. The machine rolled down the concrete with the heavy grace of an overloaded freight train, gaining kinetic energy with agonizing slowness.

[00:14:23]To lift this mass safely off the ground, Umstead and the co-pilot had to lean into the massive control yolks together, gripping them until their knuckles went white, savagely overcoming the physical resistance of the dense airstream against the enormous elevators.

[00:14:41]The thick steel control cables routed through pulleys for dozens of meters aft stretched to the limit of their structural elasticity.

[00:14:49]The pilot needed the strength of a weightlifter simply to force the airplane to raise the nose gear off the asphalt. When the airplane finally heaved itself off the ground, tension in the cockpit reached a critical point.

[00:15:02]The rate of climb was so low it seemed like an error. To keep the heavy metal from falling into a spin, Umstead was forced to hold the temperamental engines at maximum revolutions far longer than regulations allowed. The flight engineer continuously reported the abrupt rise in temperature of the rear row cylinder heads. The thick aviation oil inside the blazing engines heated rapidly, critically losing its protective lubricating properties. The engineers had to issue an emergency order to open the massive metal cowl flaps fully so that cold oncoming air could reach the cylinder metal. But this solution created an aerodynamic wall. The open flaps acted as air brakes, sharply increasing the drag of the airframe. The airspeed indicator remained hopelessly fixed at a humiliatingly low reading. In level flight, Major Umstead finally understood that he was flying a dead military project. On the beautiful drawings, this Leviathan was supposed to carry 18 tons of retribution across the ocean. In reality, the cruising speed amounted to a mere 165 mph, and the maximum speed in a dive never exceeded 224 mph.

[00:16:19]It was an unappealable verdict. Any production German Meshmid fighter could complete two combat turns around this clumsy giant before the frozen gunners of the experimental bomber 19 could bring their heavy machine guns to bear on the target.

[00:16:37]The enormous shining expanse of polished aluminum made it an ideal target.

[00:16:43]Umstead physically felt how sluggishly the machine responded to roll inputs.

[00:16:49]The ailerons required long delays as though the mechanical commands traveled by telegraph. The airplane possessed no maneuverability, no ability to evade anti-aircraft fire or high altitude interceptors. The stated range of 5,200 mi had no strategic meaning if the clumsy airplane was certain to be destroyed in the very first hour inside hostile airspace. The expensive illusion of absolute invulnerability shattered against the simple lack of kinetic energy. The concept of a heavy aerial battleship proved unworkable. The machine had become obsolete before it ever flew. Yet, it was precisely this daily, agonizing struggle for survival in the sky that transformed the failed superheavy bomber into the army's most priceless technical asset. The leadership of the military departments, having reluctantly allowed Donald Douglas to finish construction, coldly used Major Umstead and his crew as free guinea pigs.

[00:17:54]No one in their right mind intended to send this slow barge to drop bombs on fortified Tokyo.

[00:18:00]Its only true mission was the brutal testing of radial engines under extreme conditions. In 1942 and 43, the airplane was operated to the limit as a flying laboratory. Flight engineers risking their lives inside the vibrating wing tunnels recorded every drop of hot oil, every burnthrough of steel exhaust collectors, every misfire in the 18 cylinder units.

[00:18:27]They collected volumes of raw engineering data paid for with vibration, deafening noise, and the risk of fire in the air.

[00:18:36]All this pain, all the endless failures were immediately and in the strictest secrecy passed on to the company's competitors.

[00:18:46]Engineers at the Boeing Corporation studied the reports on engine overheating from the experimental bomber 19 around the clock so as not to repeat the fatal mistakes on their new secret project. It was these right radio engines brought to absolute technical perfection thanks to the long hours of suffering endured by the giant Douglas machine that would soon be mass-installed on the next generation of bombers. Those very high alitude pressurized Boeing 299 aircraft that a few years later would forever change the history of mankind and put the final period to the Second World War with two blinding atomic flashes.

[00:19:29]In 1943, engineers of the United States Army Air Corps made a decision that definitively cemented the airplane's status as a laboratory rat. The original right radial engines, for which this giant platform had been created, were ruthlessly removed. Chief designer Ed Burton watched as his creation was deprived of its heart. In their place, experimental 24 cylinder liquid cooled Allison engines were mounted on the massive engine bearers. Each unit delivered a colossal 2,600 horsepower.

[00:20:03]The modification received the official designation experimental bomber 19A.

[00:20:10]The increase in thrust allowed the 73 ton machine to be accelerated to 275 mph.

[00:20:18]But this victory had absolutely no market meaning. The dry mathematics of progress had already passed a death sentence on the project. At the same time, on the secret assembly lines of the competitors, production Boeing 29 bombers were already being built. The new machines were smaller, yet they flew in pressurized cabins at altitudes unreachable by anti-aircraft artillery, attaining speeds of nearly 354 mph.

[00:20:48]Against this background, the experimental leviathan from Douglas looked like a heavy locomotive from a bygone era of the industrial revolution that had, by some absurd accident, ended up on a modern high-speed line where new laws of aerodynamics now ruled. Over the following years, the giant fuselage was used exclusively as a heavy transport container. Military logistics required the movement of bulky cargo, and the former bomber obediently hauled spare parts between domestic bases.

[00:21:21]Remarkably, over all the years of the harshest operation, endless overloads, and risky experimental flights, this machine suffered not a single accident involving loss of the airframe. Ed Burton had built such a reserve of strength into the aluminum spars that the metal refused to fail even when aerodynamics and physics worked against it. The airplane killed not a single person. It was the most reliable and the most useless combat asset in the arsenal of the United States of America, devouring enormous budgets simply by the fact of its existence.

[00:21:58]But the absence of disasters could not save the project from merciless accounting.

[00:22:03]Every hour of flight of this 4engine monster cost the treasury thousands of dollars. Not only the huge Allison engines consumed fuel, but also the complex hydraulic systems that required continuous maintenance.

[00:22:18]The era of heavy piston aviation was rapidly drawing to a close, giving way to jet turbines. Maintaining the obsolete transport had become a financial burden the army no longer wished to carry on its government books.

[00:22:32]On the 17th of August 1946, the final act of this industrial drama took place. The airplane made its last flight touching down heavily on the scorching concrete of Davis Monthan Air Force Base in the state of Arizona. The site was officially called a storage center, but all aviators knew it as the main graveyard for retired military aircraft.

[00:22:58]The giant Firestone wheels accepted the impact of 73 tons of Duralin for the last time. The engines were silenced forever, and technicians drained the remaining high octane gasoline from the integral wing tanks.

[00:23:16]The machine was coldly preserved in the hope that the postwar economy would allow the unique specimen to be turned into a museum exhibit. But the harsh laws of the market dictated entirely different rules. A special air force commission carefully calculated the cost of constructing a protective pavilion for an airplane with a wingspan of more than 212 ft. The final estimate proved truly astronomical.

[00:23:43]Preserving history cost more than building a squadron of new high-speed fighters. In the offices of the Pentagon, officials who had never held a bombers's control yoke affixed a dry ink signature to the final disposal order.

[00:23:58]Illusions of grandeur shattered against the simple cost of a square meter of concrete foundation for an exhibition hanger.

[00:24:06]In July of 1949, heavy construction equipment was driven up to the parking spot of the experimental bomber 19A.

[00:24:15]Workers with propane cutters coolly began the destruction of the most expensive aviation prototype of the 1930s.

[00:24:22]The thick aluminum frames capable of withstanding the most grueling transatlantic flight melted under the burning streams of superheated gas.

[00:24:32]Miles of steel control cables, the complex acoustic landing gear monitoring system, the soundproofed sleeping compartments, and the intra-wing tunnels were methodically reduced to shapeless heaps of scrap. The metal from which Ed Burton had tried to forge the absolute weapon of dominance was sold for remelting at the price of ordinary industrial waste. The irony of fate lay in the fact that of the greatest achievement of the Douglas Corporation, only two parts remained that had never existed in nature to begin with. The military engineers ordered that only the two giant 2 m firestone wheels be preserved.

[00:25:14]Today, these massive pieces of reinforced rubber lie in a museum hanger as dry physical evidence of an era when corporate ambitions collided with the insurmountable laws of physics.

[00:25:27]This colossal project perished because its creators failed to calculate the strength limits of the available materials, forgetting that to move a flying mountain of aluminum, it is not enough to draw a beautiful engineering blueprint.

[00:25:42]It was not a tragedy, but dispassionate mathematics.

[00:25:46]When the oxy acetylene torches sliced through the frames of the experimental bomber 19, the public quickly forgot the metallic Leviathan of the Douglas Corporation.

[00:25:57]Historical memory is cruel, and the title of the largest piston engine bomber of the United States of America passed forever to another machine.

[00:26:08]That airplane was the strategic Conveyor B-36 Peacemaker.

[00:26:13]While Ed Burton's project weighed 162,000 lbs at maximum takeoff weight, the new postwar giant pushed the rigid boundaries of material science to 410,000 lb. Its wingspan grew to 230 ft. To lift this enormous mass from the concrete, engineers had to install six 28cylinder radial piston engines with highly aggressive pusher propellers and later, out of desperation, add four more turbo jet units on separate underwing pylons.

[00:26:48]The Conveyor Corporation had been forced to absorb all the painful lessons of thermal dynamics and structural integrity that Major Stanley Umstead's crew had paid for in 1941.

[00:27:01]Inside the enormous wing of the Peacemaker, narrow pressurized tunnels for crawling flight engineers were also laid, and the simple landing gear became a complex multi-wheel truck so as not to punch through the reinforced concrete slabs of military airfields under the weight of a nuclear bomb.

[00:27:21]But the harsh irony of aviation engineering lay in the fact that the conveyor B-36 inherited the chief congenital defect of its forgotten predecessor.

[00:27:32]It too became hopelessly obsolete at the very moment its final production drawings were delivered to the main assembly shop. The accountants of the United States Air Force with absolutely cold mathematical precision calculated the operating cost of the new piston giants in the dawning jet era. The piston internal combustion aircraft engine had reached its absolute physical and thermodynamic limit. Any further increase in shaft output required a geometric exponential growth in the mass of forged steel cylinders, heavy crankshafts, and massive oil cooling systems. Every added horsepower dragged along additional pounds of dead metal weight that had to be lifted into the thin icy stratosphere at the cost of enormous consumption of high octane fuel. While the giant peacemaker deafened the country with the low frequency roar of its 10 engines, engineers at the rival Boeing company were already assembling on the jigs a completely jet-powered strategic bomber, the B47.

[00:28:39]The new swept wing machine had none of the complex temperamental radial engines that were constantly prone to sudden thermal seizure of the piston group. It had none of the two m of heavy steel control cables running through the entire riveted fuselage.

[00:28:55]Turbo jet units burned aviation kerosene by the thousands of gallons per minute, but they delivered what was fundamentally unattainable for machines with classic aerodynamic propellers.

[00:29:07]They provided kinetic energy capable of pressing close to the sound barrier. The free market of armaments passed final judgment on complex piston mechanics.

[00:29:18]Military departments no longer needed flying armored submarines equipped with electric stoves for preparing hot meals and soundproofed sleeping compartments.

[00:29:28]They needed nothing but high-speed radar platforms for the guaranteed delivery of thermonuclear warheads where every extra gram of structure was perceived as a direct state financial crime.

[00:29:40]Donald Douglas, watching this ruthless technical progress from his office, understood one fundamental truth perfectly well. His destroyed experimental bomber 19 had, under no circumstances been an engineering failure. In the brutal world of large government money and multi-million dollar military contracts, success for an aircraft building corporation was measured not by the number of serial museum exhibits produced, but by absolute monopoly on critically important physical data. Over 5 years of continuous, grueling operation in heavy flying laboratory mode, his clumsy aluminum monster had generated tens of thousands of pages of dry telemetry reports.

[00:30:28]Simple technicians gasping from toxic carbon monoxide in the tight vibrating wing tunnels had collected truly unique statistics on the accumulation of fatigue in Duralumen under extreme vibrational and resonant loads from the enormous propellers.

[00:30:45]It was this bloody technical statistics that formed the basis of the updated American government standards for the design of heavy strategic aviation.

[00:30:55]Those very right 3350 duplex cyclone radial engines that melted from within and failed on mass during the first bench tests in 1941 had passed through the harshest practical shakeddown in the history of world engine building. By 1945, these modified units had become the most reliable superheavy piston engines in the country's arsenal. Without the slightest hesitation, they were installed on nearly 4,000 production Boeing 29 Superfortress bombers.

[00:31:29]These high alitude pressurized machines literally burned the entire industrial potential of the Japanese Empire to ash.

[00:31:37]Without those agonizing and financially ruinous flights by Major Mstead aboard the slow Douglas barge, perfecting the temperature regimes of these engines would have taken several more years. In the realities of global world war, that delay would have cost the state treasury additional billions of dollars and tens of thousands of marine lives on the islands of the Pacific Ocean. The chief historical paradox of aviation engineering in the 1930s lay in the fact that the attempt by government customers to create a universal airplane with an unlimited budget and unlimited range at full speed shattered against the merciless square cube law. Simple linear scaling of an aircraft's dimensions does not lead to a proportional increase in its combat effectiveness.

[00:32:25]The brilliant designer Ed Burton tried to cheat the laws of aerodynamics by locking them inside a gigantic riveted fuselage, but physics answered with a brutal drop in cruising speed, total loss of maneuverability, and catastrophic overheating of the power units. This experimental project became a monumental and very expensive lesson for the entire world aerospace industry.

[00:32:51]Metal fatigue never forgives technical compromises with the laws of basic thermodynamics.

[00:32:58]If a radial engine cannot provide itself with an adequate flow of cold oncoming air for its own cooling at maximum takeoff thrust, no amount of refined aerodynamics on a giant wing will save a military project from inevitable cancellation and complete oblivion.

[00:33:18]Today, of the 73 tons of high techchnology aviation aluminum, the complex high-pressure hydraulic pumps, and the advanced navigation systems, absolutely nothing remains except two giant 2 m rubber tires created from scratch in the chemical laboratories of the Firestone Company. These black massive cylinders of steel cord reinforced and vulcanized rubber lie quietly in the dry conditioned air of a military archive as a mute reproach to an entire era. An era when the country's finest engineers sincerely believed that the size of an airframe and the total number of rivets could solve any tactical problem. The true history of the experimental bomber 19 is not a sentimental tale of the conquest of boundless skies by valiant pioneers.

[00:34:14]It is a cold, densely packed with numbers court record of how the fundamental laws of conservation of energy, the mathematical resistance of materials, and the dry financial calculus of market economics can methodically destroy any project, even the most ambitious, long before its heavy steel landing gear first lifts off the rough concrete of the test runway.

[00:34:40]In August of 1946, a plump secretmarked financial folder lay on the massive oak desk of Major General Oliver Eckles, chief of the Army Air Force's Material Command. Inside was a detailed audit of the operating expenses for a single piece of equipment. The experimental bomber 19A re-engineed with Allison power plants demanded operating budgets that drove military accountants into cold fury.

[00:35:11]General Eckles looked at the dry columns of figures and saw absolute economic catastrophe.

[00:35:18]Every start of the 24 cylinder liquid cooled engines cost the Treasury thousands of dollars merely from the monstrous consumption of high octane aviation gasoline and special synthetic oils. The unique hydraulic pumps designed by Douglas engineers exclusively for this giant machine wore out at a catastrophic rate. Spare parts did not exist in nature. To replace a ruptured line or a cracked steel gear in the retraction mechanism of the enormous 2me Firestone landing gear, army mechanics had to order custom milling of parts from commercial factories at exorbitant peace production rates.

[00:35:57]Eckles understood perfectly well that the army could no longer afford to maintain this incredibly voracious flying museum piece. A new era of global confrontation was approaching and every cent of the defense budget had to go toward financing the mass production assembly of new jet bombers.

[00:36:17]The general took up his fountain pen and coolly affixed his sweeping signature to the order for the immediate retirement of the 73ton giant from active service.

[00:36:26]The ferry flight of the machine to the storage base at Davis Monthan in the state of Arizona became the final exhausting test of strength for its weary duralin structure. The hot dry desert air was supposed to protect the metal from aggressive corrosion, but it proved utterly merciless to other critical components of the giant airplane. As soon as the huge steel propeller blades finally stopped turning, an irreversible process of physical degradation began.

[00:36:56]Inside the complex fuel lines and massive integral tanks capable of holding 10,800 gall of fuel, rubber seals began rapidly to dry out and crack. Without the constant circulation of hot oil under high pressure, the steel internals of the complex Allison engines were methodically coated with a microscopic layer of oxide film. The onboard electrical system, consisting of dozens of miles of copper wiring with fabric insulation, rapidly lost its dialectric properties under the scorching desert sun. Douglas engineers had originally designed this machine for multi-our flights over the icy expanses of the Atlantic Ocean, not for a slow, agonizing death on burning sand.

[00:37:43]After 3 years of continuous exposure in the open air, the Superheavy bomber had finally turned into a dead metal carcass. The unique analog acoustic landing gear monitoring system had been disabled by sharp daily temperature swings. The thick glass of the unpressurized cockpit had permanently clouded from the abrasive effect of brutal dust storms. Military inspectors who periodically examined the airframe repeatedly recorded a critical loss of structural integrity.

[00:38:13]Even if the generals had suddenly changed their minds and ordered the clumsy machine returned to the sky, it would already have been physically impossible.

[00:38:22]Restoring basic airworthiness would have required completely disassembling the 132 ft fuselage, drilling out 3 million steel rivets, and replacing every dried out seal. An effort that would have cost several times more than building an entirely new modern combat aircraft.

[00:38:41]In July of 1949, economic reality delivered the final crushing blow to the metallic Leviathan.

[00:38:49]The price of virgin aviation aluminum on world exchanges began to climb rapidly due to the mass ramp up in production of new high-speed jet fighters. In the offices of the Pentagon, it was quickly calculated that the abandoned airframe of the experimental bomber 19A contained dozens of tons of the most valuable high strength alloy lying as completely dead weight in the Arizona desert. A crew of hard-faced commercial industrial disposal contractors was immediately dispatched to Davis Monthan. These men felt not the slightest reverence for the machine's former greatness or for the engineering genius of chief designer Ed Burton. Their only interest was the net weight of the non-ferris metal. The process of physical destruction was strictly technological, rapid, and brutally merciless. Workers used heavy industrial cranes to rip the massive 24-cylinder Allison engines off their reinforced mounts. Each power plant weighed more than a ton, and they fell onto the rough concrete with a dull metallic clang, crushing the precision machined steel components of the carburetors. Then the powerful gas cutters went to work. The blue flame at 2500° C easily and soundlessly sliced through the thick duralin spars that had once been designed to withstand monstrous aerodynamic loads in storm clouds. The gigantic wing, with its unimaginable span of 212 ft, was methodically sectioned into compact, manageable blocks convenient for loading onto open railroad flat cars. The lead elevator counterweights, miles of thick steel control cables, the electric kitchen stoves, and the aluminum frames of the bunks were mercilessly dumped into common, dusty piles of nameless industrial waste. The unique experimental machine, whose development had consumed years of grueling engineering labor and astronomical millions of dollars from American taxpayers pockets, was coolly reduced to standardized ingots of remelted aluminum in just a few weeks of intensive contractor work. This act of industrial vandalism became the perfectly logical conclusion of the most grandiose and paradoxical program in the history of the army airore.

[00:41:12]The dry figures of the final accounting report recorded the ruthless financial reality. The final revenue from the sale of the collected scrap amounted to only a negligible fraction of a percent of the colossal original costs of design and construction.

[00:41:27]But for General Eckles and the lead engineers of the Douglas Corporation, this depressing basic mathematics no longer held the slightest significance.

[00:41:37]The experimental bomber 19 had fully performed its true, deeply hidden function. It had served as a colossal test transformer that efficiently converted government millions of dollars, tons of burned high octane fuel, and countless hours of exhausting labor by army mechanics into the most valuable strategic resource of the 20th century.

[00:42:02]Pure and verified technical data. The catastrophic overheating of the original right radial engines, the unbearable physical effort of cable control, the destructive resonant vibrations of the huge riveted fuselage, and the endless logistical nightmare of servicing the integral wing fuel tanks became precisely that negative engineering experience without which the triumph of mass heavy strategic aviation of the United States of America would have been absolutely impossible.

[00:42:36]Every smallest mistake made by Ed Burton in his desperate attempt to outwit the fundamental laws of mass and aerodynamic drag was meticulously documented, analyzed, and forever banished from the secret drawings of future generations of combat aircraft. The destruction of the giant in the Arizona desert was not an act of bureaucratic disregard for history, but the most rigorous confirmation of the central law of industrial evolution.

[00:43:06]Technology has no right to prolonged existence out of human sentimentality.

[00:43:12]When an aluminium airframe ceases to generate useful kinetic or financial returns, it is immediately consigned to the melting furnace to free space and valuable resources for far more advanced, faster, and lethal machines.