About: Jetex

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The Jetex motor is a miniature solid-fuel rocket motor produced for use as a powerplant for aerodynamically lifted model aircraft. Jetex was developed in 1947, by Wilmot, Mansour & Company Ltd of Southampton, it was first demonstrated in early 1948, and was available to the public in June 1948, when featured Jetex power on its front cover. The first motors were the Jetex 100 and 200, with the more powerful Jetex 350 following in November 1948. The most popular motor, the Jetex 50, was introduced in May 1949, along with kits for a model plane and model car using Jetex power. The subsequent popularity of Jetex led to the manufacture of numerous kits by third party companies such as KeilKraft, Skyleada.

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  • Das Jetex-Triebwerk ist ein Raketenmotor für Flugmodelle, der hauptsächlich im eingesetzt wird. Das Triebwerk wurde 1947 entwickelt und war ab 1953 bei der Wilmot and Mansour Company in Southampton erhältlich. Außerdem waren bei dieser Firma auch Bausätze für die Jetex-Triebwerke erhältlich. In Deutschland wurden die Kleinsttriebwerke in den 1960er Jahren von der Firma Graupner vertrieben. (de)
  • The Jetex motor is a miniature solid-fuel rocket motor produced for use as a powerplant for aerodynamically lifted model aircraft. Jetex was developed in 1947, by Wilmot, Mansour & Company Ltd of Southampton, it was first demonstrated in early 1948, and was available to the public in June 1948, when featured Jetex power on its front cover. The first motors were the Jetex 100 and 200, with the more powerful Jetex 350 following in November 1948. The most popular motor, the Jetex 50, was introduced in May 1949, along with kits for a model plane and model car using Jetex power. The subsequent popularity of Jetex led to the manufacture of numerous kits by third party companies such as KeilKraft, Skyleada. Classic JetexJetex motors are powered by a solid pellet consisting mainly of guanidine nitrate, which burns to release an exhaust gas in large volume, leaving little solid residue. Thrust developed is modest and sustained, making it suitable for aerodynamically lifted flying models. The exhaust gas is not excessively hot, which confers a safety advantage. Motors are loaded with one or more solid fuel pellets and a combustible 'wick' is led through the exhaust nozzle to ignite the fuel. Fuel and wick were manufactured by Imperial Chemical Industries (ICI). The engine casing of the early motors are made of an aluminium alloy. On introduction fuel pellets and wick could be purchased separately and so the system is reusable. Jetex power made a big impact in the late forties and early fifties, allowing new sorts of models, scale and duration, to be designed. Jetex went through a change of ownership in the mid 1950s and gradually its popularity waned. (Incidentally, Jetex motors were used extensively by AP Films/Century 21, during the 1960s for producing model vehicle exhaust effects for the 'Supermarionation' TV series.) However, by the late 1970s Jetex power had been largely forgotten. Jet-XIn 1985 Roy and Julie Lever of the UK company Powermax discovered a stock of original Jetex motors in the USA. These motors were of Sebel manufacture, comprising steel-bodied 50Cs and 50R/HTs. The Levers themselves undertook the manufacture of igniter fuse and fuel. By the following year Powermax launched a range of motors and fuel kits onto the UK market under the Jet-X brand. In the October 1986 issue of Aeromodeller, Peter Freebrey reviewed the new fuel and fuse, having made a number of successful test fights with a KeilKraft 'Space Jet'. In the USA it was not until August 1995 that the motors and new fuel and fuse were commercially imported. In that same month, Flying Models, in an editorial by Bob Hunt, hailed their arrival, enthusing that "safe and viable rocket power for model airplanes is back". When the initial stock of Sebel motors came to an end Powermax introduced their own 'Z' series motors in the latter half of the 1990s. The range was eventually extended to include motors of 100 and 35 size. Though tales of uncertain ignition and variable performance plagued the Jet-X scene, the Levers must be credited with bringing the reloadable micro rocket concept back to practical life. RapierWith the new millennium came another revival. A product called the was launched. This has similar weight, thrust and duration to Jetex and many old plans for Jetex powered models were dusted off and built and flown with the new motors. The Rapier is a single use motor with a cardboard case and a ceramic nozzle. In appearance it is more like a model rocket motor than the original Jetex. TenderaIn early 2020 another new, comparable range of motors was introduced, under the name Tendera. These are rather similar to the Rapiers, being one-time use motors having cardboard cases and ceramic nozzles. For a detailed, comprehensive history of Jetex and its various successors please see Jetex.org. (en)
  • Jetex motor adalah sebuah jenis motor mesin roket berbahan bakar padat yang diproduksi untuk digunakan sebagai powerplant untuk pesawat model. Awalnya dikembangkan pada tahun 1947, oleh Wilmot, Mansour & Company Ltd of Southampton, mesin itu pertama kali ditunjukkan kepada pers pemodelan pada awal 1948, dan tersedia untuk umum pada bulan Juni 1948, ketika Aeromodeller menampilkan daya Jetex di sampul depannya. Motor pertama adalah Jetex 100 dan 200, dengan Jetex 350 berikut lebih kuat pada bulan November 1948. Yang paling populer, mesin bermotor, Jetex 50, yang diperkenalkan pada Mei 1949, bersama dengan kit untuk model pesawat dan model mobil yang menggunakan tenaga Jetex. (in)
  • JETEXは模型用の固体燃料ロケットエンジンである。 (ja)
  • Jetex reamotor var en liten raketmotor för hobbybruk. Den kunde driva mindre modellflygplan och hade en drifttid på cirka 14 sekunder. Jetexmotorn tillverkades i England av Sebel Prod., och packades och monterades i Sverige av generalagenten . Motorn fanns i olika storlekar: Atom 35, Minijet, Rocket 50, Jetmaster och Scorpion. Minijet var den näst minsta och den var avsedd för modellflygplan med en spännvidd upp till 45 cm och en startvikt under 40 gram. Den starkaste motorn Scorpion kunde användas för raketer, flygplan upp till 80 cm spännvidd, bilar med mera. Som bränsle användes särskilda tabletter av ett icke explosivt, långsamt brinnande och gasproducerande ämne. Bränslet lades i motorns stålbehållare, en eller två tabletter. En stubintråd rullades i spiral och trycktes mot bränslet med hjälp av ett litet metallnät. En annan bit stubintråd stacks in en bit genom motorns munstycke där reaktionsgaserna sedan skulle strömma ut. Den yttre tråden antändes och rycktes sedan ut med fingrarna, när den inre tråden hade börjat antända bränslet. Stålbehållaren och locket med munstycket hölls ihop av en metallfjäder. Motorn placerades i en metallhållare som hade satts fast i modellen. Med flera olika hållare kunde motorn således användas i flera olika modeller. Motorn som bestod av stålbehållare, packning och lock samt metallfjäder, levererades med ”fästclip”, extra metallnät, rensnål för munstycket, en trästav för rengöring av stålbehållaren, bränsletabletter och stubintråd. För att skydda modellerna för värmen fanns en liten asbestduk, som monterades i modellen för att skydda mot de varma avgaserna. Motorn sades vara ofarlig och snabb och lätt att sköta, och på kartongen står det att ”bilar gör 100 km/tim, båtar gör rekordfart, robotar gör raketstart” och ”flygplan stiger till 10 våningars höjd”. (sv)
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  • Das Jetex-Triebwerk ist ein Raketenmotor für Flugmodelle, der hauptsächlich im eingesetzt wird. Das Triebwerk wurde 1947 entwickelt und war ab 1953 bei der Wilmot and Mansour Company in Southampton erhältlich. Außerdem waren bei dieser Firma auch Bausätze für die Jetex-Triebwerke erhältlich. In Deutschland wurden die Kleinsttriebwerke in den 1960er Jahren von der Firma Graupner vertrieben. (de)
  • Jetex motor adalah sebuah jenis motor mesin roket berbahan bakar padat yang diproduksi untuk digunakan sebagai powerplant untuk pesawat model. Awalnya dikembangkan pada tahun 1947, oleh Wilmot, Mansour & Company Ltd of Southampton, mesin itu pertama kali ditunjukkan kepada pers pemodelan pada awal 1948, dan tersedia untuk umum pada bulan Juni 1948, ketika Aeromodeller menampilkan daya Jetex di sampul depannya. Motor pertama adalah Jetex 100 dan 200, dengan Jetex 350 berikut lebih kuat pada bulan November 1948. Yang paling populer, mesin bermotor, Jetex 50, yang diperkenalkan pada Mei 1949, bersama dengan kit untuk model pesawat dan model mobil yang menggunakan tenaga Jetex. (in)
  • JETEXは模型用の固体燃料ロケットエンジンである。 (ja)
  • The Jetex motor is a miniature solid-fuel rocket motor produced for use as a powerplant for aerodynamically lifted model aircraft. Jetex was developed in 1947, by Wilmot, Mansour & Company Ltd of Southampton, it was first demonstrated in early 1948, and was available to the public in June 1948, when featured Jetex power on its front cover. The first motors were the Jetex 100 and 200, with the more powerful Jetex 350 following in November 1948. The most popular motor, the Jetex 50, was introduced in May 1949, along with kits for a model plane and model car using Jetex power. The subsequent popularity of Jetex led to the manufacture of numerous kits by third party companies such as KeilKraft, Skyleada. (en)
  • Jetex reamotor var en liten raketmotor för hobbybruk. Den kunde driva mindre modellflygplan och hade en drifttid på cirka 14 sekunder. Jetexmotorn tillverkades i England av Sebel Prod., och packades och monterades i Sverige av generalagenten . Motorn fanns i olika storlekar: Atom 35, Minijet, Rocket 50, Jetmaster och Scorpion. Minijet var den näst minsta och den var avsedd för modellflygplan med en spännvidd upp till 45 cm och en startvikt under 40 gram. Den starkaste motorn Scorpion kunde användas för raketer, flygplan upp till 80 cm spännvidd, bilar med mera. (sv)
rdfs:label
  • Jetex-Triebwerk (de)
  • Jetex (in)
  • Jetex (en)
  • JETEX (ja)
  • Jetex reamotor (sv)
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