1 Negative thrust (what is this)
04-21-2003 | 03:24 PM
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1 Negative thrust (what is this)
Could you help me with the above-[img]i/expressions/face-icon-small-confused.gif[/img]described in an old Popular Mechanics DIY Encyclopedia."Use a 3-blade prop (1 neg thrust max)with a COX 020 engine.So what type of prop should this bee?I only understand the 3-blade part.Thanx in advance.
04-21-2003 | 04:19 PM
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1 Negative thrust (what is this)
We more commonly refer to "Downthrust" than negative thrust. The engine is mounted such that in level flight attitude the crankshaft points down a little. Some planes need very little, some need up to 12 deg of downthrust. (a couple of designs need up-thrust.)
We also commonly angle the engine a little to the right, to couteract torque turning efects.
We also commonly angle the engine a little to the right, to couteract torque turning efects.
