 A heavier-than-air aircraft that derives lift from one or more revolving "wings," or blades, engine-driven about an approximately vertical axis. A rotorcraft does not have conventional fixed wings, nor in any but some earlier models is it provided with...  Transportation Energy Conservation Data Book - Halaman 9oleh G. Kulp, Oak Ridge National Laboratory - 1980 - 384 halamanTampilan utuh - Tentang buku ini
 | United States. Federal Aviation Agency - 1965 - 772 halaman
...blades, engine-driven about ;•_ approximately vertical axis. A rotorcraft does not have convention fixed wings, nor in any but some earlier models is it provided withi conventional propeller, forward thrust and lift being furnished b the rotor. The powered rotor... | |
 | United States. Civil Aeronautics Board. Economic Evaluation Division - 1977 - 132 halaman
...lift from revolving "wings" or blades engine-driven about an approximately vertical axis. A helicopter does not have conventional fixed wings, nor in any...also enable the machine to hover, and to land and take off vertically. AIRCRAFT HOUR. AIRBORNE (aka "WHEELS -OFF WHEELS -ON TIME") The airborne hours... | |
 | United States. Federal Aviation Administration - 1972 - 852 halaman
...heavier-than-air aircraft that derives lift from one or more revolving "wings," or blades, engine-driven about an approximately vertical axis. A rotorcraft does not...have conventional fixed wings, nor in any but some eariler models is it provided with a conventional propeller, forward thrust and lift being furnished... | |
 | United States. Federal Aviation Administration. Office of Management Systems - 1056 halaman
...heavier-than-air aircraft that derives lift from one or more revolving "wings", or blades, engine-driven about an approximately vertical axis. A rotorcraft does not...also enable the machine to hover, and to land and take off vertically. SCHEDULED AIR LINE - See CERTIFICATED ROUTE AIR CARRIER. SCHEDULED OPERATION —... | |
 | 1966 - 248 halaman
...heavier-than-air aircraft that derives lift from one or more revolving "wings," or blades, engine-driven about an approximately vertical axis. A rotorcraft does not...blades also enable the machine to hover and to land and take off vertically. SCHEDULE AIR TAXI OPERATOR— The holder of an Air Taxi Operating Certificate... | |
| |
