Aeros SkyRanger, Operator'S Manual

Page: 18 / 83

Skyranger Operators Manual, Issue 3, Feb 2011
18
5. Performance
5.1 The following data was obtained in the original UK prototype, G-CBIV.
Changes from this data for your particular aircraft will be at Annex A.
When using the data for planning purposes, apply sensible safety
factors, such as are contained in CAA Safety Sense leaflet 7B (aircraft
performance), part of which is reproduced here by kind permission of
the CAA.
5.2 The best climb speed is 53kn CAS [ IAS]. When selecting a
climb speed, always remember that should anything go wrong, more
speed gives you more time to sort your problems out. Although climb
performance may change between aircraft, the best climb speed should
not. Specific performance figures for your aircraft will be in Annex A.
5.3 The best glide speed is 60kn CAS [ IAS], at which a glide ratio
of around 9 to 1 may be expected. Flying a little slower at 50kn CAS
[ IAS] will give the minimum descent rate (min sink) of around
550FPM.
5.4 Cruise performance Because microlight aircraft are very strongly
affected by weight, engine condition, propeller matching, wind and air
temperature, it is very hard to give any reliable information concerning
the cruise performance of the Skyranger. The captain is encouraged to
plan very conservatively until sufficient experience is gained of the fuel
consumption and cruising speeds at the conditions in which he or she
normally fly the aircraft.
5.5 Takeoff performance Take-off performance for short dry grass for
your aircraft is contained in Annex A.
5.5.1 Using the figures above, the following additional safety factors should
be applied to the distance to clear a 15metre obstacle (taken from CAA
GA Safety Sense leaflet 7B). If unsure, always use these factors to
ensure you have sufficient take-off distance available.
Per 1000 ft runway height above Sea Level Multiply by 1.1
Per 10°C increase in temperature above 15°C Multiply by 1.1
Per 2% uphill slope Multiply by 1.1
Soft ground or snow or wet grass Multiply by 1.25