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塞斯纳172飞行员操作手册 Cessna 172 PILOT'S OPERATING HANDBOOK(45)

时间:2011-12-29 11:03来源:蓝天飞行翻译 作者:航空 点击:

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16°C x 10% = 16% Increase 10°C
With this factor included, the fuel estimate would be calculated as follows: The total estimated fuel required is as follows:
Engine start, taxi, and takeoff Climb Cruise Total fuel required
This will leave a fuel reserve of:
40.0
-33.1
6.9 Gallons 1.1
1.5
30.5
33.1 Gallons
Fuel to climb, standard temperature Increase due to non-standard temperature (1.3 x 16%)
Corrected fuel to climb 1.3
0.2
1.5 Gallons Once the flight is underway, ground speed checks will provide a more accurate basis for estimating the time enroute and the corresponding fuel required to complete the trip with ample reserve.
LANDING

 
A procedure similar to takeoff should be used for estimating the landing distance at the destination airport. Figure 5-10 presents landing distance information for the short field technique. The distances corres¬ponding to 2000 feet and 30°C are as follows:
Ground roll 590 Feet
Total distance to clear a 50-foot obstacle 1370 Feet
A correction for the effect of wind may be made based on Note 2 of the landing chart using the same procedure as outlined for takeoff.
With an expected 10 knot headwind, the ground speed for cruise is predicted to be:
114
-10
104 Knots
Therefore, the time required for the cruise portion of the trip is:
450 Nautical Miles = 4.3 Hours 104 Knots
The fuel required for cruise is:
4.3 hours x 7.1 gallons/hour = 30.5 Gallons
 
SECTION 5
PERFORMANCE CESSNA MODEL 172N CESSNA MODEL 172N SECTION 5
PERFORMANCE

AIRSPEED CALIBRATION AIRSPEED CALIBRATION
NORMAL STATIC SOURCE ALTERNATE STATIC SOURCE
HEATER/VENTS AND WINDOWS CLOSED
 
TEMPERATURE CONVERSION CHART STALL SPEEDS
 
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