About: Projector, Rocket 3-inch, No. 8, Mk. I

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About: Projector, Rocket 3-inch, No. 8, Mk. I Sponge Permalink

An Entity of Type : dbkwik:resource/DfDZ007C7a_G6JpEuvXV1g==, within Data Space : 134.155.108.49:8890 associated with source dataset(s)

The Land Mattress' name came from its naval counterpart, the Sea Mattress, a similar system used for bombarding beaches prior to landing. Notably, the Land Mattress design used components from various sources. For example, the rocket motor from the RP-3 Aircraft Rocket, the 3 kilogram warhead from the naval Sea Mattress, and discarded fuses deemed unsafe by the British Royal Army. By using the RP-3's aircraft rocket motor and rifling the rocket tubes, the Land Mattress' rockets were given a degree of spin, thus increasing accuracy and maximum range. The muzzle velocity of these rockets was about 353.5 meters per second, with the system taking about seven seconds to completely empty its racks of rockets.

Attributes	Values
rdf:type	Artillery
rdfs:label	Projector, Rocket 3-inch, No. 8, Mk. I
rdfs:comment	The Land Mattress' name came from its naval counterpart, the Sea Mattress, a similar system used for bombarding beaches prior to landing. Notably, the Land Mattress design used components from various sources. For example, the rocket motor from the RP-3 Aircraft Rocket, the 3 kilogram warhead from the naval Sea Mattress, and discarded fuses deemed unsafe by the British Royal Army. By using the RP-3's aircraft rocket motor and rifling the rocket tubes, the Land Mattress' rockets were given a degree of spin, thus increasing accuracy and maximum range. The muzzle velocity of these rockets was about 353.5 meters per second, with the system taking about seven seconds to completely empty its racks of rockets.
dcterms:subject	Artillery British Artillery Rocket Artillery
dbkwik:world-war-2...iPageUsesTemplate	dbkwik:resource/WROQB5CY60aEcskKLTCMmw== dbkwik:resource/IpP3WQgebHeK9GoALbrtlQ== dbkwik:resource/XeS8VY7QZ0uxHODJN1gM8Q==
Velocity	353.5
Name	Projector, Rocket 3-inch, No. 8 Mk. I
Type	Rocket Launcher
Weight	1120.0
Caliber	3.0
Total Length	1.77 m
Magazine	16(xsd:integer)
Crew	3(xsd:integer)
Year	1944(xsd:integer)
abstract	The Land Mattress' name came from its naval counterpart, the Sea Mattress, a similar system used for bombarding beaches prior to landing. Notably, the Land Mattress design used components from various sources. For example, the rocket motor from the RP-3 Aircraft Rocket, the 3 kilogram warhead from the naval Sea Mattress, and discarded fuses deemed unsafe by the British Royal Army. By using the RP-3's aircraft rocket motor and rifling the rocket tubes, the Land Mattress' rockets were given a degree of spin, thus increasing accuracy and maximum range. The muzzle velocity of these rockets was about 353.5 meters per second, with the system taking about seven seconds to completely empty its racks of rockets. The Land Mattress weighed about 1,120 kilograms with a total length of 1.77 m. It featured either 16 or 30 rocket tubes, with each rocket taking an estimated 10 minutes to reload and rewire to the built-in electrical ignition system. Perhaps the most restricting feature of the system was its elevation which was restricted from +23˚ to +45˚, giving the piece a good maximum range of 7,225 meters, but also a minimum range of 6,125 meters. To correct for the minimum range, rotary spoilers were added to the exhausts of the rockets so as restrict the flow of exhaust by varying amounts, giving the Land Mattress an absolute minimum range of 3,565 meters, something that was far more practical.

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