posted 11-23- 11:52 PM               

---

Ok u plane testers beta 2 of the tiffie is ready for testing,i have modified roll rates and made further attempts and getting her to speed at 15000ft.Let me know how she feels ur input is critical .Will post on the active opps forum.

IP: Logged

posted 11-24- 02:25 AM               

---

ok the active forum for opps is up so its now posted i couldnt get onto it earlier.
Now comon where the crazy guys err i mean the test pilots.

IP: Logged

posted 11-24- 07:30 AM               

---

I will have a look at the new version tonight. Just for flavour here's a little first hand account of an introduction to the Typhoon.

MEETING THE BEAST
>=================
>
>With my parachute on my back it took three people to help me up to the
>Typhoon's cockpit, which is nine feet off the ground. As the plane is very
>streamlined there is nothing to hang to. You have to get your fingers into
>the hollows which are covered by metal plates on spring hinges. They close
>again when you remove your hand or your foot, just like a rat trap. In the
>end they hoisted me up, settled me in, slapped me on the back, shouted
'good
>luck' and I found myself all alone inside the bowels of the monster.
>
>I rapidly called back to mind all the gen. my instructors had given me. As
>the exhaust gases had a high carbon monoxide content and seeped into the
>cockpit you had to breathe oxygen all the time. I therefore hurriedly put
on
>my mask and opened the intake valve. On take-off Typhoons swing hard right
>and I therefore adjusted the rudder trim very carefully. I opened the
>radiator wide. I checked the locking of the undercart - the lever looked
>uncomfortably like the one for the flaps. I lowered the flaps control to
>open up the pneumatic circuit in order to avoid ram effect just as I
started
>up. I switched on the instrument panel light. I regulated the throttle
>lever - open five-eighths of an inch (not one fraction more, otherwise the
>carburettor would flood and there might be a blow back). I pushed the
>pitch-control lever right forward and then back an inch or so, to avoid
>run-away in the constant speed unit.
>
>I verified that my tanks were full and selected the centre fuselage tanks
>for the take-off (gravity feed in case the pump packed up). I unscrewed the
>Wobble pumps; one sent a mixture of alcohol and ether into the carburettor,
>the other a mixture of petrol and oil to the cylinders.
>
>I inserted a cartridge into the starter (The Koffman system, which uses the
>violent expansion of explosive gases to get the engine turning. If the
>engine doesn't start first time it will almost certainly catch fire, being
>bung-full of juice). With one finger on the coil booster and another on the
>starter button, I fired the cartridge. The mechanic hanging on to the wing
>helped to 'catch' the engine and it started up with a deafening roar. The
>amount of noise is about five times as great as in a Spitfire. After
missing
>a few times, the engine settled down to a reasonable steady rhythm, though
>not without exuding oil at every pore. The sound of the engine and the way
>it vibrated struck me as suspicious. My nerves were very much on edge and I
>didn't feel at all easy in my mind. What on earth had ever induced me to
>return to ops?
>
>These reflections probably lasted some little time because, when I looked
>up, there were the mechanics looking lightly suprised and waiting for a
sign
>from me to remove the chocks. I began to taxi - a bit too fast. I must be
>careful not to over-work the brakes. They overheated very quickly and hot
>brakes don't function.
>
>That engine! You moved forward quite blindly, picking out the way like a
>crab, with a bit of rudder now left, now right, so as to be able to see in
>front. Once I was on the edge of the runway, before venturing further I
>cleared the plugs, as per instructions, by opening up to 3000 revs, and a
>film of oil immediately spread over my windshield. Two Typhoons who were in
>the circuit landed clumsily, but the controller seemed disinclined to give
>me the green light. I stuck my head out to make a sign, even though I would
>probably get a dollop of boiling hot oil in the eye. Still a red light.
>Christ, I must have forgotton something - and my confounded engine was
>beginning to heat. My radiator had already got to 95 degrees. A glance
>round - my flaps were at 15 degrees all right, my radiator was open...
Hell,
>the radio! I quickly switched it on and called: "Hallo Skydoor, Skydoor,
>Tiffie 28 calling. May I scramble?" The controller replied by at last
giving
>me a green light. Here goes! I tightened my straps, released the brakes,
>carefully aligned myself on the white line down the middle of the concrete
>and slowly opened the throttle, with my left foot hard on the rudder bar.
>
>I had been warned that the Typhoon swung, but surely not as much as this!
>And the brute gathered speed like a rocket! I corrected as much as I could
>with the brakes, but even then I found myself drifting dangerously on the
>right. Half-way down the runway my right wheel was practically on the
grass.
>If I came off the runway I would gracefully flip on my back! To hell with
>it! I tore her off the gound.
>
>This plane just had no lateral stability at all. I still went on drifting
to
>starboard and, with those miserable ailerons that only 'bit' at speeds
>higher than 100mph, I daren't lower my port wing too much.
>
>Luckily they had hauled F hanger down, after a series of accidents all due
>to the same cause, but even then I passed uncomfortably close to E hanger.
>
>I retracted my undercart but forgot to put the brakes on. A terrific
>vibration which shook the whole plane from stem to stern reminded me that
my
>wheels had gone into the cavities in the wings still revolving at full
>speed. I only hoped the tyres hadn't been ruined.
>
>Really, it had been very pleasant behind that office desk...
>
> PIERRE CLOSTERMAN DSO, DFC.

IP: Logged

posted 11-24- 02:03 PM               

---

Hawker, I tried out the Beta 2 sm and I believe you are moving in the right direction. However the plane now has an enormous amount of torque. I had to apply full right stick trim and 3/4 right rudder to get it to fly straight and level at 320 mph. I timed a level roll at this speed whilst flying straight and level.:

360 degree roll to the right approx 6 secs;
360 degree roll to the left approx 3.5 secs.

The need to apply heavy right rudder causes the stability to be upset still making this a twitchy gun platform.

I hope this is useful.

IP: Logged

posted 11-24- 07:50 PM               

---

Ok yarstick thanx,as you now the tiffie was a lil more unstable then the tempest.thats why the tempest had the bigger tail,but i will look into the torque to right i may be able to correct by increasing engine rpm which also makes for higher top speed up high and decreses torque at the same time.

IP: Logged