This is a link to my Jett 90 powered G/P revolver, sorry you can't see the plane, but there is a very good sound track of a flypast.
could sombody please run a doppler programe on it, and give me a speed ?
thanks
John
Christchurch NZ

You can also not see the link.

oops

http://www.youtube.com/watch?v=7bLld7IwGkQ

I will call it 209 km/h or 130 mph.

You didn't mention the air temperature. Figuring 61 deg F I get 133 MPH

We are a lot closer this time.

thanks guy's
a bit dissapointing, Ive had 148 on my gps, and felt sure she was running sweeter this time.
I would guess air temp to be around 70

The 148 may have been a high power decent with a tail wind. Or does your gps record the whole flight?

gps records the whole flight,and gives a top speed, but I have always assumed that it was 'one dimentional', Ie records speed parralel to the ground, negating the higher speed achieved during a dive.

I see 134 at 70 degrees.

I would guess that somewhere between a 30 and 45 degree dive, the ground speed would start to diminish. But I feel certain a shallow dive would increase the ground speed. Add a little tail wind and you could get 148.

I would think the the fastest ground speed would be at the bottom of a dive when you first level out, especially going down wind. The plane should not have slowed much from what it was doing in the dive.

I checked this in waveOscope as well I get a little different result.

I used WaveOScope and never got anything that high. It is hard when you have to use the lines so far to the left. Where did you get the English version of the program?

I don't usually use the ones that far left but they were by far the most distinct. I can't remember where I got the English version. Someone put up a link one time and I downloaded it. If I can find it I wll put up the link.

English Version can be found at this link guys.....

http://happykillmore.com/main_downloads.asp

Either zip file or WAVEoSCOPE.exe will do..... Gofastz

Got it. Thanks

What prop are you running ?

11x8 apc