7 thoughts on “While we are on the subject of aviation”
great jump suits, built in air bags (or fun bags)
If they’re an invading force I surrender, they can do what they like to me 😉
I see towards the end of the film that Val was having another blonde moment. 😀
What was the question again??
OZ
As anyone knows, the major disadvantage of rotary over fixed wing is airspeed.
A rotating disk is limited in forward speed by the adverse aerodynamic effect generated as the advancing rotor tip breaks the sound barrier. In supersonic flight the principles of lift reverse while the shock wave generated creates massive drag loads on a very localised portion of the blade. The stresses generated during such events can rip the rotor blade to smithereens.
Also consider this, the retreating blade will encounter significantly decreased lift as it effectively travels slower than the airflow passing over it. An effect known as ‘Retreating Blade Stall’, in translational flight it has the effect of causing the helicopter to roll to the retreating blade side. Some stability systems sense airspeed and adjust by feeding in opposite cyclic to counter the effect. Other times you will clearly see the pilot has the cyclic tilted to one side during high speed flight. There comes a point however where mechanical changes in blade pitch have no further effect and the retreating blade will lose all lift, it basically exceeds its maximum angle of attack to the relative airflow and enters a stall condition.
Unless the pilot reduces speed and gains control of the disk, the entire aircraft will simply drop out of the sky.
Also we must factor into the equation that neither a Chinook nor any of the Russian heavylift rotary bohemoths would ever be able to transport that many nekkit women. 🙂
Look out for Lecture 2 in the series. ‘Coriollis Effect, Ground Effect and Going Commando’. 🙂
Ferret that may be the case scientifically but my picture wins hands down any time. 😉
Rick,
That is as may be but pedantry be allowed, it’s not the hands that are down. 🙂
Hiya Ferret – I thought this one might tempt you out of your burrow, but not for the reasons you firstly address. 🙂
OZ
It’s a lot of bother for a jump, innit? 😉 Now going commando, that’s different…..
Boadicea's Chariot 
great jump suits, built in air bags (or fun bags)
If they’re an invading force I surrender, they can do what they like to me 😉
I see towards the end of the film that Val was having another blonde moment. 😀
What was the question again??
OZ
As anyone knows, the major disadvantage of rotary over fixed wing is airspeed.
A rotating disk is limited in forward speed by the adverse aerodynamic effect generated as the advancing rotor tip breaks the sound barrier. In supersonic flight the principles of lift reverse while the shock wave generated creates massive drag loads on a very localised portion of the blade. The stresses generated during such events can rip the rotor blade to smithereens.
Also consider this, the retreating blade will encounter significantly decreased lift as it effectively travels slower than the airflow passing over it. An effect known as ‘Retreating Blade Stall’, in translational flight it has the effect of causing the helicopter to roll to the retreating blade side. Some stability systems sense airspeed and adjust by feeding in opposite cyclic to counter the effect. Other times you will clearly see the pilot has the cyclic tilted to one side during high speed flight. There comes a point however where mechanical changes in blade pitch have no further effect and the retreating blade will lose all lift, it basically exceeds its maximum angle of attack to the relative airflow and enters a stall condition.
Unless the pilot reduces speed and gains control of the disk, the entire aircraft will simply drop out of the sky.
Also we must factor into the equation that neither a Chinook nor any of the Russian heavylift rotary bohemoths would ever be able to transport that many nekkit women. 🙂
Look out for Lecture 2 in the series. ‘Coriollis Effect, Ground Effect and Going Commando’. 🙂
Ferret that may be the case scientifically but my picture wins hands down any time. 😉
Rick,
That is as may be but pedantry be allowed, it’s not the hands that are down. 🙂
Hiya Ferret – I thought this one might tempt you out of your burrow, but not for the reasons you firstly address. 🙂
OZ
It’s a lot of bother for a jump, innit? 😉 Now going commando, that’s different…..