Sea King helicopter blade

Sea King helicopter blade cutaway view
Rotary-wing blade - Figure 1-17 © www.tpub.com

The main rotor or rotary wing on the H-3 has five identical wing blades. Other helicopters may have two, three, or four blades. A typical wing blade is shown in figure 1-17. The rotary-wing blade is made of aluminum alloy, except the steel cuff by which the blade attaches to the rotor hub. The main supporting member of the blade is a hollow, aluminum alloy extruded spar, which forms the leading edge. The steel cuff is bolted to the root end of the spar. Twenty-three individual pockets constructed of aluminum ribs, aluminum channels, and aluminum skin covering are bonded to the aft edge of the spar.

Text and cutaway view: www.tpub.com courtesy

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X3 concept – experimental compound helicopter

The Eurocopter X3 concept is a High-speed long-range Hybrid Helicopter (H3 concept) which flies up to 220 knots or 410 km/h. Special thanks to Xavier – http://passiondesavions.blogspot.com webmaster – who stumbled upon this French-subtitled video:

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Airliner severe problems in volcanic dust

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Volcanic ash – Flight hazard explained

Volcanic ash poses major flight hazard to airlines

18:12 16/04/2010 Volcanic ash poses major flight hazard to airlines. >>

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SNECMA / NPO Saturn’s PowerJet SaM146 certification – Sukhoi Superjet 100 engine

17/03/2010
Certification tests of Russia’s new Sukhoi Superjet 100 medium-haul airliner are nearing completion. Its engine was subjected to tough reliability tests involving simulated ice and hail storms and frozen-carcass bird strikes.

www.rian.ru courtesy

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