PART Vi-OPERATING DATA
95. Endurance
Maximum endurance is obtained at 30,000 ft. Climb to
this height at maximum permitted power and cruise at
160-185 knots, depending on the weight. If less than
1,540 pounds remain it will be better to maintain height
than expend fuel in a climb. At 160 knots the fuel
consumption varies from about 1,380 pounds per hour
at sea level to 850 pounds per hour at 30,000 ft.
96. Flight planning data
(a) The tables on the following pages show the flight planning
data for :-
(i) Climbing
The climb table gives the data for climbs in I.S.A.
conditions using the speed recommended in para. 64.
(ii) Cruising
Each separate altitude block in the cruise table
shows:-
1. The speed for maximum range, the approximate
A.N.M./100 lb. and the approximate fuel con-
sumption for the particular height. In addition
a speed is given, use of any speed between it and the
max range speed should not cause more than a
5 per cent. reduction in range.
2. The range obtainable for various amounts of
available fuel when flying at the best range speeds
for the height. The range given is to the point
of let-down, allowance being made for the
descent fuel required.
3. The range obtainable for various amounts of
available fuel including the distance covered on
the climb, if a climb is made to another altitude.
In this case the climb must be made at the speed
given in para. 64 and the flight continued at the
new altitude at the best range speed for that
height.
NOTE.-The range at any altitude is independent
of temperature, but dependent on the
weight of fuel carried. 69 [Contd. on p. 74]
|
