| Siemetzki ASRO 4 1964 |  |
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| Siemetzki ASRO 4 1964 | |
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The single-seat ASRO 3-T was built by Alfons Siemetzki and made its first flight on 29 December 1961. This experimental helicopter was an open-frame machine of conventional layout, with a rudimentary windshield to protect the pilot, a skid undercarriage and a BMW 6002 turboshaft engine mounted amidships. The ASRO-3 was used to develop the ASRO-4 which had a fully enclosed fuselage pod and tapered tubular tailboom, and was fitted with a 130hp MAN-Turbo 6012 turbine driving a three-blade rotor. This machine flew in May 1964, and was tested for some while before being abandoned without achieving certification. R.Simpson "Airlife's Helicopter and Rotorcraft", 1998 * * *
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