|
|
|
"System Mass Integrating Time & Height" © (SMITH) where Performance = Control ©.
|
 |
| |
Maximum Takeoff Weight: 1,670 Pounds.
Hutchinson Municipal (HUT). Hutchinson, KS.
Elevation: 1,542 Feet
Temperature: 15.8C/60.4F.
Pressure Altitude: 1,542 Feet
Density Altitude: 1,995 Feet.
The following conditions are the basis for data:
1) Flaps - - 10 DEGREES
2) Throttle - - FULL PRIOR TO BRAKE RELEASE
3) Runway - - PAVED, LEVEL, & DRY
4) Field ELEV > 3,000 Feet - - MIXTURE LEANED (see POH)
5) Wind - - ZERO
|
|
Starting at zero, you used 898 feet to achieve liftoff velocity. After liftoff you displaced an additional distance of 621 feet (total distance 1,519 feet) to acquire 93 feet AGL. This represents an average 610 ft/min climb rate. Airports with operational towers and FSS will announce "check density altitude" anytime density altitude is 2,000 feet or higher. We are at the threshold of density altitude performance at a paltry 15.8°C!
Notice the effect of an increased true airspeed. A higher true airspeed is always associated with ever higher density altitude liftoff velocities. The higher the density altitude, the higher the true airspeed. This (f)actually causes a greater takeoff ground roll distance, which may result in contact with trees, buildings or terrain.
|
|
|
|
|
|
|
|
