BOEING XB-15
REFERENCE
INFORMATION
For standard procedures, see the Checklists tab.
Total Flight Simulator aircraft weight with full fuel |
68,900 lbs |
Fuel
capacity (4 tanks) |
4200
gals |
NOTE: To adjust fuel load, on the Aircraft menu, click Fuel and
Load.
VS - Stalling Speed no flaps |
80 MPH |
VSO - Stalling Speed in Landing Configuration |
65 MPH |
VY
- Best Rate-of-Climb Speed (sea level) .75 power, 750 FPM |
120 MPH |
VR - Rotation Speed
Standard temperature, sea level pressure altitude
68,000
lbs |
87 MPH |
V2 - Minimum Climb Speed
Standard temperature, sea level pressure altitude
68,000 lbs |
100 MPH |
Engine Limits
Maximum Continuous - 850 hp |
41 in Man.
Press. 2450
RPM |
Takeoff Power (ONE MINUTE) - 1000 hp |
45 in
Man. Press. 2550
RPM |
Airspeed Limits (Indicated Air Speed)
Level flight or climb |
197 MPH |
Glide or dive |
216 MPH |
Flaps
extended 0 to 20 degrees |
135 MPH |
Flaps
extended over 20 degrees |
90 MPH |
Performance (from documentation)
Maximum Operating Speed (6000 feet) |
197 MPH |
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||
Cruising Speed (6000 feet, .60 power) |
152 MPH |
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|
Initial climb |
700 FPM
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|
Time to 5000 feet |
7.1
minutes |
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|
Time to 10000 feet |
14.9
minutes |
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|
Service Ceiling |
18,900
feet |
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|
Absolute Ceiling |
20,900
feet |
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Power plant, 4 P&W “Twin Wasp” R-1830 motors, 850 hp (1000 hp takeoff) |
3400 hp
|
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Experimental
results:
Cruise
speed at 1950 rpm, 27 in man press, (.502 power) at 8000 feet Duration 29 hours, range 3850 miles |
137 MPH |
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Cruise
speed at 2100 rpm, 31 in man press, (.62 power) at 8000 feet Duration 23 hours, range 3500 miles |
152 MPH |
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Cruise
speed at 2250 rpm, 35 in man press, (.70 power) at 8000 feet Duration 19 hours, range 3100 miles |
165 MPH |
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Max speed
at 2450 rpm, 41 in man press, (.90 power) at 8000 feet Duration 14 hours, range 2600 miles |
187 MPH |
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Landing Speed (40 deg flaps) |
67 MPH |
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|
Fuel flow
per engine to achieve 23 hours duration (10% reserve) |
250
pounds per hour |
|
|
Takeoff time |
35
seconds |
|
|
Takeoff
distance (normal temp) |
3000 ft |
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|
Aircraft characteristics (from documentation)
Wing loading weight per square ft |
25 lbs |
Weight per
hp |
20 lbs |
Wing area |
2780
sq. ft |
Wing span |
149 ft
0 in |
Length |
87 ft 7
in |
Tread of
wheels, outside |
27 ft 9
in |
Chord,
maximum |
29 ft |
Dihedral |
3
degrees |
Incidence |
4.5
degrees |
Mean
Aerodynamic Chord |
256 in |
Span of
tail planes |
45 ft |
Prop
diameter |
11 ft 6
in |
Crew |
10 |
Armament |
6
machine guns in 6 turrets (.30 or
.50 cal) |
Bomb load |
4 x 2000 lb
max; 2500 lbs for 3400 mile range |
Empty
weight |
37,309 lbs |
Gross
weight |
65,068 lbs |
Maximum
weight |
70,706 lbs |
NOTE: For explanations of speeds used on this tab, see "V-speeds" in the Learning Center Glossary.