I have about 5mil to spend on old aeroplanes at the moment, its just deciding which ones to buy that is the problem.
I just see them too 🙂
I have not seen anything this weekend but heard lots of movements at North Weald on the airband, was it a flyin today? If so I missed it.
Wow lucky tyke ! I bet you still have the smile, well done you I love it when someone gets a dram flight.
repeat with me… cavitation :rolleyes: 😉
Alex
Alex I’m sure its the prop :p
NOPE it’s the prop :rolleyes:
Give up Moggy and BELIVE ! it will help.
Ok go in the garden tonight with a stick and a bit of string, make two circles one 20ft dia the other 10ft. walk the 20ft circle at your normal walking pace and time it, then the 10ft, when you have done this twice come back with your f ndings and I will explain why and what happend to you.
If it was a longer prop then surely the blade tips would be travelling even faster at a given rpm?
Moggy
Hi Moggy,
The larger the arc the slower the tip would be turning i.e. a if a 6ft dia prop tip took one 10 seconds to complete a circle then a 3ft prop would only take 5 as its half the distance in real terms a faster circle speed for the tip.
The next time you stand near a Harvard make sure you stand 90 degree to the blades and watch the vortices, its very interesting/
It is true, A very short prop causes this little sonic boom.
Lee,
You have woken up this morning and it was all a dream !
Great work to all involved cant wait to see this in the air
WOW! in photo 1, those men must be giants !!
Picture 1, is I would say from a multi engine from the look of it but the middle blind flying panel is missing, if not its an engineers panel but not seen one that shape before.
Picture 2, hmm now single engine type
Picture 3, modern by colour and for a twin engine I would think.
Not much help, Anyone else?
calibration mount I would think.
looks very simular to a Fhantom Wing Fing
I am sure that the event organisers insurance could cover this , all they need to do is call to explain the event they are putting on and a risk assesment has been carried out.
I think the one problem would be if your inviting the public into the cockpit then that would be another matter.