| 释义 |
contrapropeller|ˌkɒntrəprəʊˈpɛlə(r)|
[f. contra- 2 + propeller.]
One of a pair of propellers having concentric shafts and rotating in opposite directions; a contra-rotating propeller. Hence abbrev. ˈcontraprop |-prɒp|.
1927N. Skene Elem. Yacht Design (1936) xvii. 227 The Star contrapropeller..consists of fixed blades just abaft the propeller, set at an angle to extract a forward thrust from the rotation of the propeller jet. 1939Jrnl. R. Aeronaut. Soc. XLIII. 109 Tests of an eight-blade contra-propeller of 32-in. diameter..were made in the wind tunnel at Stanford University. 1940Flight 25 Jan. 86/1 Twin engines mounted one behind the other in the fuselage, driving contra-props. 1940Times 28 Mar. 10/6 A ‘contraprop’..is a co-axial, oppositely rotating airscrew. |