Today's Message Index:
----------------------
1. 08:49 PM - Trick to opening canopy in flight? (barry speronello)
2. 10:41 PM - Re: Trick to opening canopy in flight? (Gary L Vogt)
3. 10:45 PM - Re: Trick to opening canopy in flight? (jetinc@comcast.net)
Message 1
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| Subject: | Trick to opening canopy in flight? |
I tried for the first time today to open my Tiger's canopy in flight. IAS
about 100 kts. Pulled back on the latch, and nothing. Reached up for a
better grip and it moved some, but did not open. Tried a third time with
two hands and it felt like the front seal was stretching flightly, but it
would not separate. It was like I was trying to open it against a vacuum
and as long as no air leaked in, the canopy wouldn't slide back.
I stopped at that point, as I was concerned that pulling harder might tear
the relatively soft seal on the front face of the canopy.
Other information. I am sure the latch was unhooked...it holds my canopy
solidly forward and on my second and third tries the canopy moved to the
extent that the seal stretched. Movement like that does not happen with
the latch closed.
Both air vents were full open and blowing lots of air into the cabin. Hot
air was closed.
What am I missing? Is there a trick to getting it open in flight? During
one of my training flights in a rental Tiger the instructor opened the
canopy with little effort. That was in the autumn, though, so the vents
were probably closed. But I would have guessed that the vents would help
equalize the pressure and make opening easier. Is it that the interior was
actually pressurized relative to outside and the problem is that it can't
slide against the top of the rails?
Thanks in advance for your help.
Barry S(2)
Message 2
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| Subject: | Re: Trick to opening canopy in flight? |
Barry,
I think everyone tries to open their canopy in flight sooner or later. You r
eally do have to pull hard on the handle. It won't open easily. Once you get
it open even a quarter of an inch, it'll open easier.
A long time ago,l in land far, far, away, I opened the canopy of my Cheetah f
ar enough to lean out to take pictures. Worked ok for a while. Then, I got a
little behind the power curve and drag build up was hard and fast. It felt l
ike I was going to fall out of the air. I had about 1500 feet AGL and had e
nough time or forethought to push the nose over and dive at the ground to ga
in airspeed. Once heading downhill, I was able to grab the canopy and pull i
t shut. At about 10 inches from being closed it was like it snapped out of m
y hand and slammed shut. That was the last time I opens my canopy beyond jus
t an inch or two.
One note of caution: it gets damn windy with the canopy open.
Gary
Sent from my iPad
On May 12, 2012, at 8:48 PM, barry speronello <bkspero@gmail.com> wrote:
> I tried for the first time today to open my Tiger's canopy in flight. IAS
about 100 kts. Pulled back on the latch, and nothing. Reached up for a be
tter grip and it moved some, but did not open. Tried a third time with two h
ands and it felt like the front seal was stretching flightly, but it would n
ot separate. It was like I was trying to open it against a vacuum and as lo
ng as no air leaked in, the canopy wouldn't slide back.
>
> I stopped at that point, as I was concerned that pulling harder might tear
the relatively soft seal on the front face of the canopy.
>
> Other information. I am sure the latch was unhooked...it holds my canopy s
olidly forward and on my second and third tries the canopy moved to the exte
nt that the seal stretched. Movement like that does not happen with the lat
ch closed.
>
> Both air vents were full open and blowing lots of air into the cabin. Hot
air was closed.
>
> What am I missing? Is there a trick to getting it open in flight? During
one of my training flights in a rental Tiger the instructor opened the cano
py with little effort. That was in the autumn, though, so the vents were pr
obably closed. But I would have guessed that the vents would help equalize t
he pressure and make opening easier. Is it that the interior was actually p
ressurized relative to outside and the problem is that it can't slide agains
t the top of the rails?
>
> Thanks in advance for your help.
>
> Barry S(2)
>
>
>
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Message 3
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| Subject: | Re: Trick to opening canopy in flight? |
What he said....
----- Original Message -----
From: "Gary L Vogt" <teamgrumman@yahoo.com>
Sent: Saturday, May 12, 2012 10:40:47 PM
Subject: Re: TeamGrumman-List: Trick to opening canopy in flight?
Barry,
I think everyone tries to open their canopy in flight sooner or later. You really
do have to pull hard on the handle. It won't open easily. Once you get it open
even a quarter of an inch, it'll open easier.
A long time ago,l in land far, far, away, I opened the canopy of my Cheetah far
enough to lean out to take pictures. Worked ok for a while. Then, I got a little
behind the power curve and drag build up was hard and fast. It felt like I
was going to fall out of the air. I had about 1500 feet AGL and had enough time
or forethought to push the nose over and dive at the ground to gain airspeed.
Once heading downhill, I was able to grab the canopy and pull it shut. At about
10 inches from being closed it was like it snapped out of my hand and slammed
shut. That was the last time I opens my canopy beyond just an inch or two.
One note of caution: it gets damn windy with the canopy open.
Gary Sent from my iPad
On May 12, 2012, at 8:48 PM, barry speronello < bkspero@gmail.com > wrote:
I tried for the first time today to open my Tiger's canopy in flight. IAS about
100 kts. Pulled back on the latch, and nothing. Reached up for a better grip
and it moved some, but did not open. Tried a third time with two hands and it
felt like the front seal was stretching flightly, but it would not separate. It
was like I was trying to open it against a vacuum and as long as no air leaked
in, the canopy wouldn't slide back.
I stopped at that point, as I was concerned that pulling harder might tear the
relatively soft seal on the front face of the canopy.
Other information. I am sure the latch was unhooked...it holds my canopy solidly
forward and on my second and third tries the canopy moved to the extent that
the seal stretched. Movement like that does not happen with the latch closed.
Both air vents were full open and blowing lots of air into the cabin. Hot air was
closed.
What am I missing? Is there a trick to getting it open in flight? During one of
my training flights in a rental Tiger the instructor opened the canopy with little
effort. That was in the autumn, though, so the vents were probably closed.
But I would have guessed that the vents would help equalize the pressure and
make opening easier. Is it that the interior was actually pressurized relative
to outside and the problem is that it can't slide against the top of the rails?
Thanks in advance for your help.
Barry S(2) ==================================
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