4 ms·
Nothing, if only a single engine helicopter. However, many (probably all, but I don't know for sure) heavy lift or rescue helicopters are multi-engine. For exa
by phillc73 9y ago
Nothing, if only a single engine helicopter.
However, many (probably all, but I don't know for sure) heavy lift or rescue helicopters are multi-engine. For example, the Westland Sea King (Powerplant: 2 × Rolls-Royce Gnome H1400-2 turboshafts, 1,660 shp (1,238 kW) each)[1] or a newer Sikorsky S-92 (Powerplant: 2 × General Electric CT7-8A turboshaft, 2,520 shp (1,879 kW) each).[2]
Here's a document from the Civil Aviation Safety Authority (CASA) in Australia, concerning performance standards for multi-engine helicopters. It provides a pretty good overview of what they need to be able to do with one engine inoperative (OEI).[2]
[1] https://en.wikipedia.org/wiki/Westland_Sea_King https://en.wikipedia.org/wiki/Westland_Sea_King
[2] https://en.wikipedia.org/wiki/Sikorsky_S-92 https://en.wikipedia.org/wiki/Sikorsky_S-92
[3] https://www.casa.gov.au/sites/g/files/net351/f/_assets/main/corporat/policy/notices/ceo-pn029-2005.pdf https://www.casa.gov.au/sites/g/files/net351/f/_assets/main/...