Lagonda flamethrower

Lagonda flamethrower

The Lagonda flamethrower was a weapon commissioned by the Royal Navy during the early years of World War II that would act as a deterrent to Luftwaffe dive-bombers targeting the lightly defended Merchant Navy ships and coastal bases of the Fleet Air Arm. The project was jointly managed by special-weapons departments of the Navy and the British Army.

Method of operation

The basic premise of the project was to create a weapon capable of shooting a jet of flame high and wide enough to force incoming bomber pilots to either pull out of their dive or brave a pillar of flame potentially capable of damaging or destroying their plane. Designs were solicited from a number of sources, and the feasibility of the plans received was checked by a panel of consultants brought in from the Anglo-Iranian Oil Company. Military engineers then constructed prototypes of the most promising designs and, after testing, demonstrated their capabilities in front of a number of different admirals and generals. The most effective was a design submitted by the Lagonda car company, which fired eight gallons of a diesel oil/tar fuel mixture per second, igniting to produce a continuous gout of flame with a range of nearly 100 ft, which at its widest point was roughly thirty feet in diameter. According to Gerald Pawle, an engineer working on the project, the Lagonda flamethrower universally inspired both awe and horror in all staff officers invited to watch the demonstrations. Further refinements were made to the design which increased its effective range to 200 ft, though a much larger quantity of fuel was needed to maintain the flame for any significant period of time.

Trials and operation

A trial at sea was arranged to test the effectiveness of the weapon as a deterrent to German aircraft. A prototype flamethrower was installed onto the deck of the French trawler "La Patrie", modified to fire vertically. When the RAF pilot arrived the team responsible for the construction of the flamethrower, worried that the weapon would prove "too" effective, briefed him on exactly what he could expect to happen. The results of the test were less than impressive: as instructed, the pilot made his first dummy attack without approaching too closely the area directly above the weapon, which was rigged to fire vertically upwards, but on subsequent runs flew closer and closer to the flame to the point of almost bringing his aircraft directly into the line of fire. The pilot's report made it very clear that he did not believe the weapon to be a very effective deterrent, but admitted that the trials may have been biased by his foreknowledge of their nature. With this in mind, a second trial was arranged with a different pilot. No information at all was given to the man about what he could expect. The results were depressingly similar to those of the first trial — the pilot never wavered in his attack, actually brushing half of his wing into the jet of flame. However, it was discovered afterwards that there might be another reason behind the failure of the second test. The pilot chosen for the runs had worked in a circus prior to the war, driving cars through rings and walls of fire on a regular basis. In the belief that the Luftwaffe would have very few men with circus experience, limited production of the Lagonda naval flamethrower began, with weapons being installed onto coasters working in and around the River Thames. The flamethrowers were welcomed by captains at first, until they discovered that the weapon required a very high level of maintenance and expert handling if the weapon was to have sufficient fuel-pressure to be effective, and the crew wished to avoid being coated in tar.

While the installed flamethrowers did not produce a single confirmed enemy casualty before the end of the war, information gathered by the British Secret Intelligence Service suggested that the weapons had two noticeable effects upon the German armed forces. Firstly, trials were observed of a similar naval defensive flamethrower project involving a long mast-mounted pipe, which suffered similar setbacks to the British weapon — a number of trials ended with the attending officers and all others on the shore nearby being coated with oil. Secondly, partly as a result of the Lagonda flamethrower and partly due to other deterrent weapons such as the Parachute and Cable (PAC) system and the Holman Projector, the average height of German bombers attacking merchant ships increased to well above 200 ft, the altitude at which bombs had been successfully hitting on roughly 50% of the drops.

Developments

Another offshoot of the Lagonda flamethrower project was the "Cockatrice", or more formally the Commer/Lagonda Flamethrower Armoured Vehicle. A modified turret-version of the weapon was mounted onto a Commer Q4 lorry, which was itself modified with a crude system of armour plating to protect it from rifle-fire. The vehicle, which weighed over twelve tons, was a prototype designed for defence of the coastal bases of the Fleet Air Arm in the event of glider- or parachute-dropped invasion troops. It was estimated that such troops would need roughly one minute upon landing to detach themselves from their equipment and open fire, and so the Cockatrice was believed to be the ideal fast-response defence vehicle, able to kill or terrorise into surrender a force of the small size expected to be attacking such remote airfields. The effectiveness of this idea was proven later by Allied flame tanks in mainland Europe and Asia. However, the Cockatrice itself was never moved into production, as the threat of an airborne invasion faded with the conclusion of the Battle of Britain.

ee also

*Flamethrower, Portable, No 2, or "Ack-pack", a portable flamethrower used by British infantry in the same period.

References

* Pawle, G. "The Secret War", White Lion, 1972. ISBN 0-85617-120-4
* [http://uk.tank.museum/ The Bovington Tank Museum]


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