Foxcon Terrier T200 LSA, Flight Manual

Page: 23 / 31

Terrier T200 LSA Flight Manual Rev No.: 1.0 15 April 2008 Page 23 of 31
10. Performance
10.1 Stall Speeds
(In Knots and power off condition -Maximum Takeoff & Landing Weight)
Flap Setting Zero Stage 1 Takeoff Stage 2 Landing
Vs 40-44 knots 38-42knots 36-40knots
10.2 Nature of Stall
Aircraft buffeting announce the stall.
10.3 Take Off & Landing Distances
Take Off 100 metres
Landing (Full Flap) 100 metres
10.4 Engine
Engine
Indicated
Airspeed
Fuel
Cruise @ 4000 rpm 95 knots 13 LPH
Cruise @ 4300 rpm 100 knots 14 LPH
Top Speed 4500 rpm 110 knots 15 LPH
10.5 Weight & Balance
Why is weight and balance important?
Every airplane, to fly right, actually has to balance on a point (roughly 25% back from the leading edge of
the wing). We will not go into the laws of physics here, just talk about the practicalities. If you grab a ball
point pen and balance it on your finger, then mark the point of balance, tomorrow, putting your finger at
the same spot will have it balance again. UNLESS someone has stuck a lump of putty on one end, then
you would have to move your finger (airplane wings) to make it balance again, or get a SAME weight
lump on the other end (if they were HEAVY lumps of putty, your finger/wings may now bend).
Same story with an airplane. Put a really heavy lump of luggage in, and you will either have to move the
wings back to regain balance (very hard) or resort to some other means.
Right now -to put theory into practice, grab a sheet of paper and fold your favourite paper plane and fly
it, then stick a lump of chewing gum on the tail and see if it still flies well.
So we need a way to discover how our airplane is balanced, and while you will not need to use this
every flight, initially when you are planning a flight that may be near your maximum load, it would be a
good idea to print the ready reckoner at the back of this manual and use it.
“What if I fly too far forward”? The aircraft will be hard to maintain a set altitude where you can relax in
flight. When coming in to land, as the airplane slows and the elevators become less effective, it CAN
plunge in nose first. Too far to the rear, flies very soggy, and as you are coming in to land, tail can stall
abruptly, forcing the wing to stall as the tail falls away.