On Feb 12, 9:35*am, Eric Greenwell wrote:
On 2/12/2011 7:29 AM, Bob wrote:

On Feb 11, 11:42 pm, *wrote:
A few years back I had the opportunity to visit the Mecoplex Stand at
the Friedrichshafen Aero during which I asked about the problem of
radiation exposure and was assured that their canopy materials
absorbed both UVA and UVB to a very high degree (approx.98%). *In
support of this they mailed me a copy of their catalogue
substantiating this claim. *I am sure they will provide the same info
to anyone interested.

Lorry

It all depends on which canopy one has. *My Ventus B, with original
canopy, failed a UV test miserbly with testing equipment from a local
college.

Exactly what was the failure? All UVA transmitted? All UVB also
transmitted? I'm very curious, because my poking around the Internet
indicates finding plastic that will transmit UVB usually involves paying
quite a bit extra for plastic with that ability.

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to
email me)
- "Transponders in Sailplanes - Feb/2010" also ADS-B, PCAS, Flarmhttp://tinyurl.com/yb3xywl
- "A Guide to Self-launching Sailplane Operation Mar/2004" Much of what
you need to know tinyurl.com/yfs7tnz

I got an amazing sun tan under that old ASW19 canopy. But nothing of
the sort with my DG800.
Anecdotal evidence may be indicating the canopy material of the 80's
and earlier simply let this radiation through?