X-Virus-Scanned: clean according to Sophos on Logan.com From: "Kelly Troyer" Received: from mail-oi0-f46.google.com ([209.85.218.46] verified) by logan.com (CommuniGate Pro SMTP 6.1.14) with ESMTPS id 9447220 for flyrotary@lancaironline.net; Thu, 09 Feb 2017 16:12:17 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.218.46; envelope-from=keltro@gmail.com Received: by mail-oi0-f46.google.com with SMTP id u143so9755625oif.3 for ; Thu, 09 Feb 2017 13:12:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=c53UE0foxqwUMmj7mshsjj/WUjH/r74y5NCl8+PctTY=; b=msI5aLi2dNfiZk6+kOhKMZhdEE5YDx+d6DCV2HNCUiniqOF4hiTwDaqyABqgldoglk E5UpzAsmrSiqCX/7XUCzATzeaUEOQYko/bAMGADLu5U2wBXcjCPmQrapoEok4YyTCerf cgf9K6QlyWoGf7gh85xlseb7jbhreXxqDskhCtVv579sDgiovkmsdGfjJTS2w60ASqV5 9zidq6Ly2lpyfw/fai/DnzWEK3RoO2YSZ49GQ7FGAY0FJFMztC+BoetYj9EFm+67cg9H Z/mMX9KR9T383Q773jk1OlXHDXCUKGzp/7puDrDv+37a5Rai4nLh1humlN83MGv4/axg TsdQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=c53UE0foxqwUMmj7mshsjj/WUjH/r74y5NCl8+PctTY=; b=P4tW+5YqIeXVsWY6uP5m8KEplgbPnTIQygnuyFlZHutQeSTjnA2HbORwx3ETzuKl3W oBc5BSUDwnVodRb0857/mT+b1lbK0X55lVQmJVS5pBUElh6+mVgo5RpUgNWUqS1+91rS hOdcmM1/dCrXEv5u9y0QLHR247WjrLCejKjgtzIUE7OqqHkJUl3r1itGACTJvL+mSGrt eLPcr/6SHHPqRhwbs31XpS7otuN7lGPsofB4t9/qiC+AS6XZr5JjjBIivz9jqFr2xvj/ Ykm1iqGpPUWYfSr8oPJ5xMoMf5KNH4IdvJ666J1rDgjG6tFtt8nDXKK6KGB94CpT9ixy DAOQ== X-Gm-Message-State: AMke39kJMFHK7R0MfuNFtUK8HJ5aeFBcGz+6aSWlVKvQ9DYm1+vFtgRSW1OsZv36EGFi2/PRY+aI12CErhQG6w== X-Received: by 10.202.212.70 with SMTP id l67mr2771667oig.153.1486674718650; Thu, 09 Feb 2017 13:11:58 -0800 (PST) MIME-Version: 1.0 Received: by 10.157.54.214 with HTTP; Thu, 9 Feb 2017 13:11:58 -0800 (PST) Date: Thu, 9 Feb 2017 15:11:58 -0600 Message-ID: Subject: Mistral Update To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=001a113deff480778c05481f6e86 --001a113deff480778c05481f6e86 Content-Type: text/plain; charset=UTF-8 Perhaps of interest to some of the group.........I made a recent inquiry to Paul Janssens of Belgium (Mistral G-300 3 Rotor Engine in a Glasair III) which was detailed in three issues of "Kitplanes" magazine in the past two years how his installation was doing and as to the current status of "Mistral".........Below is his reply.........FWIW Kelly Troyer Kelly, Mistral has grown again and is backed by a powerful investor group. they are very hard at work obtaining EASA certification for their engines and will achieve this within a few years. there is massive interest in 200, 300 Hp engines, but also in other HP ranges, and Mistral know they will be very busy for quite some years yet. as a Customer, i can only vouch that my engine is working very satisfactorily indeed. Mistral back-up has been slow for everyone because of the huge amount of work, but i must say i`ve always been able to get the right answers from them when i needed. exhaust.....yes...well, i have been putting it off for as long as i could, hoping Mistral would jump on the problem with the first batch of customers. after all, we`re all in the same boat. but priorities are priorities, and mistral has been forced to set the exhaust question aside for a while. i have recently started to intensively reserach the problem, and here`s my conclusions so far : - most exhaust manufacturers use a build and test method. this is less expensive and you get an exhaust that does the job. - in the case of a rotary engine, this can only lead to a good result by chance. build and test gets very expensive if you have to make your test parts in high heat resistant metals. an accoustic, flow and thermodynamic similation in a specialised model is expensive, but seems to be the best way to limit the range of test models in order to achieve optimum results. the investment in getting an exhaust which is as good as it can get is required, as it will lead to satisfied customers and hopefully impressive noise certificates. better get the exhaust thing squared off once and for all by doing it as perfect as we can get. so we are looking into various options, and i hear Mistral is close to making time for the problem. they are very aware that there is urgency and will come to our help soon. i have no idea about time frame, but there is no real reason this should take an abnormal amount of time once we get our backs Under it, its just a question of starting off on the right track before we start running. kind regards, Paul --001a113deff480778c05481f6e86 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
=C2=A0 =C2=A0 Perhaps of interest to some of the group....= .....I made a recent inquiry to Paul Janssens of Belgium (Mistral G-300 3 R= otor Engine in a Glasair III) which was detailed
in three issues of &qu= ot;Kitplanes" magazine in the past two years how his installation was = doing and as to the current status of "Mistral".........Below is = his reply.........FWIW

Kelly Troyer


Kell= y,

Mistral has grown again and is backed by a powerful investor g= roup.
they are very hard at work obtaini= ng EASA certification for their engines and will achieve this within a few = years. there is massive interest in 200, 300 Hp engines, but also in other = HP ranges, and Mistral know they will be very busy for quite some years yet= .
as a Customer, i can only vouch that m= y engine is working very satisfactorily indeed. Mistral back-up has been sl= ow for everyone because of the huge amount of work, but i must say i`ve alw= ays been able to get the right answers from them when i needed.
exhaust.....yes...well, i h= ave been putting it off for as long as i could, hoping Mistral would jump o= n the problem with the first batch of customers. after all, we`re all in th= e same boat.
but= priorities are priorities, and mistral has been forced to set the exhaust = question aside for a while.=C2=A0
i have= recently started to intensively reserach the problem, and here`s my conclu= sions so far :
- most exhaust manufactur= ers use a build and test method. this is less expensive and you get an exha= ust that does the job.
- in the case of = a rotary engine, this can only lead to a good result by chance. build and t= est gets very expensive if you have to make your test parts in high heat re= sistant metals.
an accoustic, flow=C2=A0= and thermodynamic similation in a specialised model is expensive, but seems= to be the best way to limit the range of test models in order to achieve o= ptimum results. the investment in getting an exhaust which is as good as it= can get is required, as it will lead to satisfied customers and hopefully = impressive noise certificates.
better ge= t the exhaust thing squared off once and for all by doing it as perfect as = we can get.
so we are looking into vario= us options, and i hear Mistral is close to making time for the problem. the= y are very aware that there is urgency and will come to our help soon.
i have no idea about time frame, but there i= s no real reason this should take an abnormal amount of time once we get ou= r backs Under it, its just a question of starting off on the right track be= fore we start running.
kind regards,


P= aul



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