Comper CLA7 Swift yasim readme.

This is not an authentic representation of a Comper CLA7 Swift
but it's based on the right numbers, where I could find them.

The actual aircraft modelled is G-ABUU (c/n S32/5) - C of A
first issued 08/04/1932.  The a/c was used as a company
demonstrator on an extensive European sales tour in April/May
1932 and was subsequently placed second in the 1933 King's
Cup race where it flew as number 26.

Notes
-----
There are no flaps on the Swift so I've re-bound the flap keys
'[/]' to adjust the view control, when sitting in the cockpit,
to shift the viewpoint left or right, to allow the pilot to see
what's in front of them.  While this works in the VC mode
(view 0), in other modes (chase etc.) it shifts the view up &
down.  This is to be resolved.

The engine model still requires some more work too, but seems
to be generating the right sort of power at the right rpm.
The issues with the engine are concerned with the fuel
consumption and mixture settings.

The engine will start and run with the mixture at the default
setting of 0.05 but won't generate enough power to move the a/c.
This is intentional.  The 'parking brake' has been set to 0.1,
to simulate the rolling resistance of the low-pressure tyres
fitted to the Swift.  Afaik, the Swift had no brakes and relied
upon it's low approach speed and the rolling resistance of the
LP tyres to stop once on the ground.

Once the engine is running, you can either control the throttle
manually or via the AP but to actually get moving and into the
air the mixture should be increased to around 0.65.

For info:
---------
The Pobjoy 'R' is a seven cyl, air-cooled radial - 2835 cc
with bore & stroke of 77mm x 87mm and a compression ratio of
5.7:1.  Petrol consumption is 0.57 pints (Imp) per b.h.p.
per hour and oil consumption 0.9 pints (Imp) per hour.

Normal engine power and rpm is 75 b.h.p. @ 3000 r.p.m. and
the maximium power is 85 b.h.p. @ 3300 r.p.m. for a maximum
of ten minutes.

The prop is geared at 0.47 of the engine crankshaft speed.

----
Lee Elliott.  2004-01-29.

