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As for the SM-4T, which was to be a turbine engined (with a downrated GTD-350 Soviet engine) derivative of the SM-4 Łątka, I'm afraid that to find any pictures of the design would be very difficult if not impossible. The SM-4 (with piston WN-6 engine) was actually built, so some of its photos do exist (I have a few, but of very poor quality, below you've got a drawing of the SM-4), but the SM-4T was merely a study, not a full-scale design, very soon cancelled in favour of other projects.

The designations SM-5, SM-6 and SM-7 were used several times, or rather to designate various versions of the helicopter projects. What I have on Jaszczurka is a photo of its mock-up that you'll find attached here. Jaszczurka could be designated the SM-5 but also it was referred to as Mi-2.1.1. In the years 1968-1972 there were 18 versions of single-engine helicopter projects designed at Świdnik, under the misleading "Mi-2.1" designation, which was to convince the Soviets that Świdnik worked on a Mi-2 single-engine derivative, and not indigenous projects. The mock-up of Jaszczurka was built sometime between 1970 and 1972.

And finaly the SM-7, a two-seater designed around 1977 (a drawing attached).

I hope it would somehow help.

Best regards,
Piotr

<blockquote data-quote="Petrus" data-source="post: 114826" data-attributes="member: 341">As for the SM-4T, which was to be a turbine engined (with a downrated GTD-350 Soviet engine) derivative of the SM-4 Łątka, I'm afraid that to find any pictures of the design would be very difficult if not impossible. The SM-4 (with piston WN-6 engine) was actually built, so some of its photos do exist (I have a few, but of very poor quality, below you've got a drawing of the SM-4), but the SM-4T was merely a study, not a full-scale design, very soon cancelled in favour of other projects.The designations SM-5, SM-6 and SM-7 were used several times, or rather to designate various versions of the helicopter projects. What I have on Jaszczurka is a photo of its mock-up that you'll find attached here. Jaszczurka could be designated the SM-5 but also it was referred to as Mi-2.1.1. In the years 1968-1972 there were 18 versions of single-engine helicopter projects designed at Świdnik, under the misleading &quot;Mi-2.1&quot; designation, which was to convince the Soviets that Świdnik worked on a Mi-2 single-engine derivative, and not&nbsp; indigenous projects. The mock-up of Jaszczurka was built sometime between 1970 and 1972.And finaly the SM-7, a two-seater designed around 1977 (a drawing attached).I hope it would somehow help.Best regards,Piotr</blockquote>

[QUOTE="Petrus, post: 114826, member: 341"] As for the SM-4T, which was to be a turbine engined (with a downrated GTD-350 Soviet engine) derivative of the SM-4 Łątka, I'm afraid that to find any pictures of the design would be very difficult if not impossible. The SM-4 (with piston WN-6 engine) was actually built, so some of its photos do exist (I have a few, but of very poor quality, below you've got a drawing of the SM-4), but the SM-4T was merely a study, not a full-scale design, very soon cancelled in favour of other projects. The designations SM-5, SM-6 and SM-7 were used several times, or rather to designate various versions of the helicopter projects. What I have on Jaszczurka is a photo of its mock-up that you'll find attached here. Jaszczurka could be designated the SM-5 but also it was referred to as Mi-2.1.1. In the years 1968-1972 there were 18 versions of single-engine helicopter projects designed at Świdnik, under the misleading "Mi-2.1" designation, which was to convince the Soviets that Świdnik worked on a Mi-2 single-engine derivative, and not indigenous projects. The mock-up of Jaszczurka was built sometime between 1970 and 1972. And finaly the SM-7, a two-seater designed around 1977 (a drawing attached). I hope it would somehow help. Best regards, Piotr [/QUOTE]

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