| Tartalom: |
http://hdl.handle.net/20.500.12944/13095 |
| Archívum: |
Közszolgálati Tudásportál |
| Gyűjtemény: |
Folyóiratok, folyóiratcikkek
AARMS
|
| Cím: |
Aerodynamic effects of horizontal-temporal variability of air density - A first approach
|
| Létrehozó: |
Bottyán, Zsolt
|
| Téma: |
meteorológia
repülésmeteorológia
aerodinamika
légkör
levegő
természettudományok
földtudományok
|
| Tartalmi leírás: |
As we know, the lift force and airplane velocity depend on moist (real) air density. Accordingly we discussed the influence of mentioned aerodynamic parameters based on horizontal-temporal changing of air density around their mean values. Using small perturbation of mean air pressure and temperature we determined the horizontal-temporal variability of the air density and airplane velocity as True Airspeed (TAS). The 10% influence of air temperature, air pressure and vapor pressure involve about 2.4%, 0.8% and 0.05% air density variability, respectively. The same 10% decreasing in air temperature causes 1.2% positive changing in assumed mean TAS. The short-term variability of moist air density has also been investigated and our results show 3–4% changing in TAS during a strong cold front crossing. On the other hand the climatic variability of atmospheric state variables much higher than 10% thus the long-term (climatic) variation of real atmospheric air density (and TAS of course) has to be very significant variability in time!
|
| Nyelv: |
angol
|
| Típus: |
info:eu-repo/semantics/other
|
| Formátum: |
application/pdf
|
| Azonosító: |
nke:1588-8789
nke:AARMS
nke:8
nke:549-558
nke:4
|
| Létrehozó: |
info:eu-repo/semantics/openAccess
|
