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Old Apr 23, 2014, 11:03 PM
Wonderfully Wicked
The Don's Avatar
Willoughby, Ohio
Joined Jan 2002
13,280 Posts
Thanks. Been flying free flight since I was a kid. Here is what I got on your video, 96.8, 92.5, 104.4, and 95.5mph. The last pass where you said it was a high speed pass, the video cuts out about .5 second too soon before the Doppler shift finishes so could not Doppler that last pass at the end.
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Old May 02, 2014, 04:03 PM
BVM Viper Fever
pdawg's Avatar
United States, OH, Dayton
Joined Apr 2004
5,559 Posts
Don,

Thank you again for the doppler help! I watched the video of your free flight with the live background music. Its unbelievable to see how low those rpm's are! Very cool! BTW, I am moving to Dayton next month for the next few years....maybe we can meet up and go flying at some point!
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Old May 19, 2014, 04:17 PM
BVM Viper Fever
pdawg's Avatar
United States, OH, Dayton
Joined Apr 2004
5,559 Posts
Hey Don,

This Viper is headed with me to Ohio . Any chance you could doppler the first pass? Temp was 85 F. Will you be at E-jets by any chance?

Pdawg's BVM Viper test flight (4 min 16 sec)
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Old May 21, 2014, 07:31 AM
Wonderfully Wicked
The Don's Avatar
Willoughby, Ohio
Joined Jan 2002
13,280 Posts
I got 161 mph. Nice! No plans on going to e-jets.

Don
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Old May 21, 2014, 01:15 PM
EDF Addicted
MustangAce17's Avatar
United States, FL, High Springs
Joined Sep 2005
5,450 Posts
Sweet Viper Bret!
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Old May 23, 2014, 02:44 PM
BVM Viper Fever
pdawg's Avatar
United States, OH, Dayton
Joined Apr 2004
5,559 Posts
Thank you for the reading Don! Hi Kyle! Hope FL is treating you well. I miss your state!
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Old Aug 16, 2014, 09:55 PM
Registered User
Grouser's Avatar
United States, TN, Memphis
Joined Dec 2012
98 Posts
Doppler me Don

Hi, Don.

Still trying to get files to you. Hope this helps.

Thanks,

Grouser

F9F (0 min 20 sec)
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Old Aug 16, 2014, 11:53 PM
Wonderfully Wicked
The Don's Avatar
Willoughby, Ohio
Joined Jan 2002
13,280 Posts
I got two passes at 75 mph, the first and the last pass, the other two I could not get a reading on.
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Old Aug 16, 2014, 11:56 PM
Registered User
Grouser's Avatar
United States, TN, Memphis
Joined Dec 2012
98 Posts
Many thanks, many thanks.
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Old Dec 15, 2014, 07:26 AM
Tim Lampe; Hobbico R&D
KRProton's Avatar
Champaign, IL
Joined Dec 2009
3,894 Posts
Hello Don!

Can you do anything with this? It was the maiden flight, so I didn't have the throws quite right yet. Worst of all, the ceiling was low and it was even a little foggy, so I couldn't fly very far out for extended passes, so I'm not expecting much. I had my smartphone laying out on the runway and just wanted to see if it would work. I think the concept is good because the audio seems okay, just need better weather.

Oh yea, the temp was 47F.

Thanks.

Tim

Rifle 1M Doppler passes for YouTube (0 min 17 sec)
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Old Dec 15, 2014, 07:34 AM
Wonderfully Wicked
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Willoughby, Ohio
Joined Jan 2002
13,280 Posts
Headed to work. I will check it when I get home later today.
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Old Dec 15, 2014, 06:19 PM
Wonderfully Wicked
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Willoughby, Ohio
Joined Jan 2002
13,280 Posts
Here is what I got.

pass #1: 152mph
pass #2: 135mph
pass #3: not dopplerable
pass #4: 134 mph
pass #5, #6, #7: not dopplerable
pass #8: 147 mph
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Old Dec 15, 2014, 07:52 PM
Tim Lampe; Hobbico R&D
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Champaign, IL
Joined Dec 2009
3,894 Posts
Hey, thanks Don!

I speculate the clips you could read were barely adequate because the distance I was able to go full-throttle was pretty short due to the fog. Would longer samples be better next time?

I probably won't get it airborne again until spring time here around April or May, then I'll look you up again.

Thanks again!

Tim
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Old Dec 15, 2014, 09:24 PM
Wonderfully Wicked
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Willoughby, Ohio
Joined Jan 2002
13,280 Posts
Here are how the passes look. The first two have a complete shift so can doppler. The third is not a complete shift, audio was cut off too soon. Fourth OK. Fifth has irregular waveform, maybe lipo sag. Sixth is incomplete, and seventh is incomplete possible lipo sag. Eight is readable.
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Old Dec 16, 2014, 09:04 AM
Tim Lampe; Hobbico R&D
KRProton's Avatar
Champaign, IL
Joined Dec 2009
3,894 Posts
Thanks so much again Don.

Next time the weather will be better and I can get longer runs for better audio clips and more speed!

Tim
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