Norman Longmate - Hitler's Rockets

Gradually the Kummersdorf experimenters discovered that most of the existing data about the behaviour of projectiles in flight was invalid when applied to rockets and that the evidence of small-scale experiments was no guide to what happened when the quantities were scaled up. In October 1934 Dornberger was briefly posted away to take command of the first ever German artillery battery armed with rockets – of the conventional, solid-fuel variety – but the work continued in his absence and he kept in touch with it.

By now the main outlines of the first rocket had been agreed. the A-1 – the ‘A’ stood for ‘aggregate’ or ’prototype – marked a tremendous advanced on any missile so far constructed. It was to be 4ft 6½ in (1.395 metres) long, 11⅞ in (0.3 m) wide, and was to weigh 329 lb (149 kg). The propellant, a mixture of liquid oxygen and alcohol, would produce a thrust of 660 lb (300 kg) for 16 seconds, and the missile was to be steered by self-contained gyroscopes and held steady by tail fins, after being ‘fired vertically from a slipway several yards high’. In fact, although its motor worked perfectly during a static test on the ground, it was never built, for the designers had moved on to a more ambitious model, the A-2, and early in December 1934 the first two A-2s were successfully launched over the North Sea from a test range on the island of Borkum. They behaved perfectly, reaching a height of one and a half miles (8100 ft, or 2500 m), a remarkable achievement for a totally new piece of technology, developed from scratch in a mere two years. Dornberger himself was more conscious of the distance still to be travelled, before the rocket became the supersonic, stratospheric, heavy-load-bearing projectile surpassing all known cannon of which he dreamed. ‘We had’, he summed up modestly, ‘made a beginning.’

By early 1933 the trend of German foreign policy was plain for all to see. In January the Saar, taken from Germany in 1919, was reunited with what was soon to be called the Third Reich. In March Hitler proclaimed the creation of a German Air Force and the return of conscription, in open defiance of the Treaty of Versailles. Meanwhile at Kummersdorf the rocket experiments were visibly outgrowing the existing facilities, and on safety grounds alone a move was overdue to a far larger, more remotely sited, establishment. While Dornberger concentrated on finding the money needed for equipment, ‘an impossible sum running into seven figures’, von Braun searched for a location on the coast, both to secure secrecy and because ‘on safety grounds we must be able to fire out to sea and to observe the entire trajectory from land’. While spending the Christmas holiday with relations near the Baltic coast, he was reminded that his father had once hunted duck on the remote island of Usedom, near a fishing village called Peenemünde. The young scientist’s report brought Dornberger hurrying to inspect it – and he was highly impressed:

The place was far away from any large town or traffic of any kind, and consisted of dunes and marshland overgrown with ancient oaks and pines, nestling in untroubled solitude behind a reedy foreland reaching far out into smooth water. Big Pomeranian deer with dark antlers roamed through the heather and among the bilberry bushes of the woods right to the sands of the lowlying coast. Swarms of duck, crested grebes, coots and swans inhabited this beautiful spot undisturbed for years by the report of the huntsman’s shotgun. The bustle of the watering-places strung along the coast like a necklace of pearls never invaded the lonely islet of Peenemünde. I thought there would be no difficulty in building a railway and roads and concealing the really important installations in the woods…. A small island…. faced the Peene estuary, the Greifswalder Oie. There we could carry out our experiments unnoticed throughout the year. We had a range of over 250 miles eastwards along the Pomeranian coast.

Now to raise the money. Dornberger had always believed in ‘demonstrating our wares in front of the prominent people who sat on the money bags’, and he now arranged a demonstration for General Wernher von Fritsch, Commander-in-Chief of the German army. Von Fritsch listened patiently to ‘a short lecture illustrated with coloured drawings and many diagrams’ and was then shown three static rocket engines at full thrust. ‘Hardly had the echo of the motors died away in the pine woods’, recorded Dornberger, ‘than the general assured us of his full support provided we used the funds to turn our rocket-drive into a serviceable weapon of war. Bluntly and dispassionately he put the all-important question: “How much do you want?”

By a master-stroke of military diplomacy, Dornberger next managed to interest the head of the Development Branch of the Air Ministry in rocket propulsion, describing ‘in glowing terms the possibilities of using rocket motors for launching heavy bombers’, and the latter next infected General Kesselring, Director of Aircraft Construction, with his own enthusiasm. In April 1936, a decisive date in the rocket story, both Luftwaffe men, plus Dornberger, von Braun and their own chief, General Karl Becker of the Army Weapons Office, met to agree terms for cooperation between the two services. The Luftwaffe Works Department, it was agreed, would build the station, but the army would administer it, and though there would be separate army and Luftwaffe divisions the running expenses would be shared. An Air Ministry official was immediately dispatched to negotiate with the owners of the site, the city corporation of the nearby town of Wolgast, and he telephoned that evening to say the deal was clinched at a price of 750,000 marks, £66,250 at the then rate of exchange. [1] I have used a conversion factor of 11.32 Reichsmarks to £1 throughout this book. This is the middle figure for the exchange rate, 11.76 to 10.88 RM, on 31 August 1939.

For Germany and the world 1936 was the year Hitler occupied the demilitarized Rhineland – and the Western democracies, by doing nothing to stop him, ensured him the wholehearted support of the hitherto hesitant German general staff. For the rocket team it was the year they planned the layout of Peenemünde, saw construction started, and mapped out the future pattern of their research. Already they had realized that to build a projectile large enough to accommodate the complicated motor, fuel and guidance systems they must ‘think big’ and, just as the A-1 had been replaced by the A-2 before the former had ever flown, so now they decided to press on to a more ambitious design still, the A-3, designed purely to give experience and information. This ‘research’ rocket was none the less an impressive sight, standing almost 25 ft (7.6m) high, 2 ft 5 in (0.75 m) in diameter, and weighing 1654 lb (750 kg). The motor developed a thrust of 3300 lb (1500 kg) burning the same fuel as the A-1, a mixture of liquid oxygen and alcohol, as here the research team were sure that they were working on the right lines.

Military and public relations considerations, too, argued in favour of omitting the usual small-scale stages of development, as Dornberger later recalled:

As we kept on pestering the army chiefs for money for continued development, we were told that we should only get it for rockets that would be capable of throwing big loads over long ranges with a good prospect of hitting the target. In our youthful zeal we promised all that was asked, never suspecting what difficulties would arise in consequence.