Lancaster - engine out?
Discussion
mrmaggit said:
I was at Duxford yesterday for the summer car show. They've got not only a Lanc but a Mossie there. Why aren't they being returned to flying condition?
Beacause a) they have no plans to
b) it costs an awful lot
c) restoring to flying condityion can often men an almost 100% re-manufacture of the airframe. This isn't always desirable.
Working class said:
What does 'feathering' the prop mean?
As explained, the individual prop blades rotate on their hubs so that they are edge-on to the airflow - creating less aerodynamic drag.If a prop cannot be feathered - which can happen if the hydraulic system is damaged, it can cause massive problems due to the huge amount of drag created.
If the prop cannot be fethered and it starts to windmill in the airflow, you can end up with a runaway prop and the whole propellor assembly or even the engine itself can be ripped off the wing. These types of situations happened many times during WW2.
Eric Mc said:
If the prop cannot be fethered and it starts to windmill in the airflow, you can end up with a runaway prop and the whole propellor assembly or even the engine itself can be ripped off the wing.
How can a (passive) prop rotate faster than the air that's driving it round? If that happened wouldn't the airflow slow it back down?Simpo Two said:
Eric Mc said:
If the prop cannot be fethered and it starts to windmill in the airflow, you can end up with a runaway prop and the whole propellor assembly or even the engine itself can be ripped off the wing.
How can a (passive) prop rotate faster than the air that's driving it round? If that happened wouldn't the airflow slow it back down?dr_gn said:
Simpo Two said:
Eric Mc said:
If the prop cannot be fethered and it starts to windmill in the airflow, you can end up with a runaway prop and the whole propellor assembly or even the engine itself can be ripped off the wing.
How can a (passive) prop rotate faster than the air that's driving it round? If that happened wouldn't the airflow slow it back down?Gassing Station | Boats, Planes & Trains | Top of Page | What's New | My Stuff