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Location: UFOUpDatesList.Com > 1997 > Oct > Oct 9

Re: The sky over Roswell

From: Mark Cashman <mcashman@ix.netcom.com>
Date: Thu, 9 Oct 1997 00:53:28 -0700
Fwd Date: Thu, 09 Oct 1997 08:40:42 -0400
Subject: Re: The sky over Roswell

>  From: UFO UpDates - Toronto <updates@globalserve.net>, on 10/8/97 8:10 PM:
>  Date: Wed, 08 Oct 1997 07:04:39 -0700
>  From: Ted Viens <drtedv@smart1.net>
>  To: UFO UpDates - Toronto <updates@globalserve.net>
>  Subject: Re: The sky over Roswell

>It is not a question of familiarity with the actual characteristics of
>secret military aircraft. First comes the observation. From the observation
>comes a range of possible flight characteristics. These characteristics
>determine the level of response. They can range from known flight
>characteristics through just past the rumored edge of secret technology
>to "Good Golly Miss Molly!" I am suggesting that an NL that goes from
>zenith to horizon in a minute or less is in the "Miss Molly" range.

Ted -

In the interest of providing some material for discussion, I ran
your estimate of 90 degrees of travel in 1 min (1.5 degrees /
sec) through my distance / speed spreadsheet for a range of
altitudes ranging from 1,300 - 21,000 feet. I used the
intermediate angle of 45 degrees elevation to calculate the
resulting speeds.

I also calculated the speed at 100 and 200 miles.

At 1300' = 33.33 mph
At 2600' = 66.66 mph
At 5280' = 133.32 mph
At 10,560' = 266.63 mph
At 15,840' = 399.95 mph
At 21,120' = 533.27 mph
At 100 mi =13,331.69 mph or 21,455.33 km/h
At 200 mi = 26,663.39 mph or 42,910.65 km/h

Most speeds at aircraft altitudes are not abnormal for aircraft
within those ranges. The rate at 100 mi is also not abnormal,
since the space shuttle travels at 28,160 km/h at between 100-600
mi altitudes.

The shuttle info is from


The following are the equations I used (please feel free to
indicate if you think there are any errors):

Sight Distance = Ground Distance /cos(Elevation*(@PI/180))
Altitude = tan(Elevation*(@PI/180))*Ground Distance
Actual Size =(tan(Angular Size*(@PI/180))*Sight Distance)*5280
Estimated Speed = (tan(Angular Speed Per Second *(@PI/180))*
	Sight Distance)*3600
:Ground Distance In Feet = Ground Distance *5280
:Sight Distance In Feet = Sight Distance *5280
:Altitude In Feet = Altitude *5280
'Estimated Speed km/h' = Estimated Speed *1.6093472

Because the base and elevation side of the triangle are of the same
length, the altitude is the same as the ground distance.

Mark Cashman, creator of The Temporal Doorway at
- Original digital art, writing, and UFO research -
Author of SF novels available at...

Search for other documents from or mentioning: mcashman | drtedv

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