Serious question for a QFI
Not sure you could get roll/yaw coupling in a F104 LM
"....watch the china, alpha..."
SOSL
Centripetal force is that required to keep an object moving in a circle, in an Inertial Reference Frame,i.e. seen from outside the aircraft. It acts towards the centre of the circle, and is usually generated by a component of lift (Bona mates can VIFF too).
Centrifugal force is that experienced by the crew, who are accelerating and thus in a non-inertial reference frame. Newton's Laws do not work directly in non-inertial reference frames (Einstein's do). This force acts outwards.
Or, in a thousand words....
Centripetal force is that required to keep an object moving in a circle, in an Inertial Reference Frame,i.e. seen from outside the aircraft. It acts towards the centre of the circle, and is usually generated by a component of lift (Bona mates can VIFF too).
Centrifugal force is that experienced by the crew, who are accelerating and thus in a non-inertial reference frame. Newton's Laws do not work directly in non-inertial reference frames (Einstein's do). This force acts outwards.
Or, in a thousand words....
Last edited by Fox3WheresMyBanana; 2nd Sep 2011 at 15:30.
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There are only three forces acting on an aircraft in flight. Thrust, weight and total reaction. Lift and drag are just 'lies told to children'. They are artificially defined components of total reaction (a much more valid and useful concept). Of course, take away thrust and there are only two.
....and I presume you believe that lift, sorry total reaction, is generated because of the venturi effect between a wing upper surface and the free stream air above it.
Now then - I know that even an elephant can fly
....seen Dumbo......?
Now then - I know that even an elephant can fly
....seen Dumbo......?
Arthur:
1 Aircrew ARE children. Groundcrew, in my experience, have always referred to the aircrew crewroom as the 'playpen'. Quoth the sign-in desk Sergeant, "What have the children done NOW?".
2 Since the use of physics in this case is to explain, then pontificating about total reaction is worse than useless if it doesn't lead to understanding.
3 Most reference data is provided as separate lift and drag data, so reassembling it into total reaction is inefficient.
4 Acting all superior about it ("lies") does nothing for the reputation of physicists as people worth listening to.
1 Aircrew ARE children. Groundcrew, in my experience, have always referred to the aircrew crewroom as the 'playpen'. Quoth the sign-in desk Sergeant, "What have the children done NOW?".
2 Since the use of physics in this case is to explain, then pontificating about total reaction is worse than useless if it doesn't lead to understanding.
3 Most reference data is provided as separate lift and drag data, so reassembling it into total reaction is inefficient.
4 Acting all superior about it ("lies") does nothing for the reputation of physicists as people worth listening to.
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Not sure you could get roll/yaw coupling in a F104 LM
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Now then - I know that even an elephant can fly
That is unless you are a god like you and me
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How do flies land inverted on a ceiling?!
teeteringhead....here is a link regardin' your flyin' fly question...cool!
BBC - Bang Goes the Theory - Ask Yan - How does a fly turn upside down to land on a ceiling?
BBC - Bang Goes the Theory - Ask Yan - How does a fly turn upside down to land on a ceiling?
Gentleman Aviator
Murdock - many thanks, that's a brilliant piece of film, but to me it seemed he (or possibly she) was still "wingborne" when the landing spot was grabbed.......
And as for
... then they aren't flies, they are "walks"! Tata boom!
And as for
Some species won't even be able to land on ceilings (for example, those that don't have any wings).