Prop tip speed on my (Spitfire) Maule
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Location: Glens o' Angus by way of LA
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PB84,
That 1452 departure this afternoon was a little noisy (you flew past the office), but only transient ... when the observer is near the plane of the prop, kind of like the "neeeeeooooooowwwww" sound kids make when pretending to fly...
Were you using a lower RPM that time?
Russell
Helimed76
That 1452 departure this afternoon was a little noisy (you flew past the office), but only transient ... when the observer is near the plane of the prop, kind of like the "neeeeeooooooowwwww" sound kids make when pretending to fly...
Were you using a lower RPM that time?
Russell
Helimed76
P.S. I thought for a moment yesterday I was going to need your services with that smoke in the cabin stuff!!
Gnome de PPRuNe
Join Date: Jan 2002
Location: Too close to Croydon for comfort
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Thread Starter
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I was getting smoke in the cockpit about 10 miles out so I shut down the master and phoned from my mobile to Pete's mobile to let him know I would be coming in with no radios, he said not only was he not in the tower but that he was actually sitting in Majorca with a beer in front of him but he'd call the tower and let them know. Hence the crash alarm. I must say the guys looked rather dashing in their firefighters outfights. The old tender was belching a lot more smoke than I was getting from the electrics!!
Sycamore Thank you for that.............my father taught on Harvards in Rhodesia 1940 - 1943; my first memory is the noise from the airfield of Harvards in the circuit, all day, every day. Someone said that a Prentice I once owned sounded the same going into fine pitch on the downwind leg, but I never really believed it.
OY,Treadders,I refute that remark..! 13 ft H-Std prop at 2600rpm,prop reduction ratio .5625 ,gives 995 ft/sec,about .9M.At 180 kts(300ft/sec) gives 1039 fps tip speed(.94M).
Glad it got your attention..!!
2400/40" much quieter.
1600/24" much better for the wallet in the cruise.....
Glad it got your attention..!!
2400/40" much quieter.
1600/24" much better for the wallet in the cruise.....
Gnome de PPRuNe
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It was the French owned Avenger, Sycamore, presumably you flew either OFMC's or AH-T's example?
TR, ahh well, then, `e`ll be at 2800 rpm then !!,`plus de puissance ,mon ami`.
Yes I flew H-T`s,and my arms still ache,thinking about it..!!
It`s a very stable machine,and,as it has a short stick(as there is a pull-out chart table under the instrument panel-similar on USN aircraft),aileron and elevator `gearing`/effort to change the aircraft`s roll and pitch is quite heavy /hard work if you want to be doing an `aggressive` display,or avoid the `flak`.Get the nose too low in a descending spiral,and it`s 2 hands on the stick,feet on instrument panel,or use the trimmer...You also have to keep a trickle of power on for a 3-pointer or run out of elevator.Metal covered ailerons and elevators may have helped....I really enjoyed flying it,and have enormous admiration for the guys that went to war in it....
Yes I flew H-T`s,and my arms still ache,thinking about it..!!
It`s a very stable machine,and,as it has a short stick(as there is a pull-out chart table under the instrument panel-similar on USN aircraft),aileron and elevator `gearing`/effort to change the aircraft`s roll and pitch is quite heavy /hard work if you want to be doing an `aggressive` display,or avoid the `flak`.Get the nose too low in a descending spiral,and it`s 2 hands on the stick,feet on instrument panel,or use the trimmer...You also have to keep a trickle of power on for a 3-pointer or run out of elevator.Metal covered ailerons and elevators may have helped....I really enjoyed flying it,and have enormous admiration for the guys that went to war in it....
Gnome de PPRuNe
Join Date: Jan 2002
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Sycamore 
Incidentally, I think it's the largest/heaviest aeroplane to have got in and out of Old Warden.
Incidentally, I think it's the largest/heaviest aeroplane to have got in and out of Old Warden.
TR, been there,done that,24/8/02....
