All Questions
Tagged with flight-dynamics aircraft-performance
30
questions
0
votes
1
answer
101
views
What are the effects of whiteout (snow) and brownout (sand/dust) on helos?
Is there any other effect besides low visibility?
Both seem to show very similar conditions.
1
vote
2
answers
183
views
What differences would a helicopter designed to withstand many negative Gs have compared with a normal one?
There are a few helicopters that are able to take negative G's, and to this day only one can actually perform aerobatics (ie. Chuck Aaron's BO-105). The BO 105 is a rigid rotor helicopter that has ...
6
votes
2
answers
3k
views
Why is a flat turn less efficient than a coordinated turn?
How I understand a flat (rudder-only) turn:
AOA between relative wind and the fuselage of the airplane causes a sideslip in the direction of yaw.
Vertical stabilizer weathervanes into the relative ...
- 75
8
votes
4
answers
3k
views
If I am at absolute ceiling, can I climb further by trading airspeed for altitude?
If I am flying at absolute ceiling, can I still climb by trading airspeed for altitude?
- 349
8
votes
3
answers
3k
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Why does a sudden tailwind/headwind change IAS?
I read the following statement: “tailwind quickly changing to a headwind causes an increase in airspeed and performance.
Conversely, a headwind changing to a tailwind causes a decrease in airspeed and ...
- 159
4
votes
4
answers
996
views
Why the heavier the aircraft is, the higher the airspeed must be to obtain the same glide ratio?
I know weight does not affect glide ratio. But why does higher weight need higher gliding speed?
- 349
0
votes
1
answer
178
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FAA's Airplane Flying Handbook says more lift is necessary during a climb. Isn't it the opposite? [duplicate]
"If a climb is started from cruise flight, the airspeed gradually decreases is the airplane enters a stabilized climb attitude. The thrust required to maintain straight-and-leve flight at a given ...
- 349
0
votes
2
answers
653
views
How does a zero g aircraft work?
In upward motion, drag and gravity is in the same direction (both in downward direction). So in this situation G is negative or less than 1 or something else?
In downward motion with thrust greater ...
- 109
1
vote
1
answer
151
views
Causes of yaw in slip/skid turn [closed]
Why does the plane yaw when the rate of turn is not suitable to bank angle in a turn? In a slipping/skidding turn, there is an imbalance of centripetal/ centrifugal force. How does that cause a yaw?
- 33
0
votes
1
answer
125
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what is acceleration of gravity in free fall situation with air drag? [closed]
consider a ballistic missile in reentry trajectory with initial velocity of 1000 m/s. as missile enters the atmosphere, air drag decelereting its velocity so missile's acceleration becomes negative. ...
- 109
13
votes
2
answers
3k
views
Which Provides a Faster Turn - A Horizontal Turn or a Vertical Loop?
I am starting to research this question with respect to WWII aircraft - specifically the FM2 Wildcat, which was considered an excellent dogfighter.
To approximate an "apples to apples" ...
- 1,013
17
votes
1
answer
1k
views
At what angle to the ground track does wind become favorable to lower fuel consumption?
We can all agree, flying from point A to B, a headwind will increase fuel consumption, and a tail wind will reduce it. The "jet stream" inspires these types of thoughts.
Quartering headwind,...
- 20.6k
0
votes
0
answers
369
views
Does does turning into the wind increase airspeed and/or climb rate?
At 5:24 to 6:10 in the video linked below, Kelsey appears to be claiming that turning into the wind tends to create 1) an increase in airspeed and 2) and an increase in climb rate. Are either of ...
- 22.9k
1
vote
2
answers
1k
views
What does deploying landing flaps do to the (L/D)max and minimum drag speed of an airplane?
I thought that deploying flaps will increase both the drag and lift, thus increasing L/D ratio? But do they increase proportionately? And how exactly does that correlate with the increase/decrease of ...
- 91
2
votes
1
answer
349
views
Change of absolute ceiling with weight
Let's say an aircraft has an abs ceiling of some value at the start of its cruise and then it consumes some percentage of its fuel during cruise. How will this change the new abs ceiling at the end of ...
- 91