Popham
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Extremely variable both longitudinally and laterally. On the other hand it's 900m long, so if you've got an aircraft THAT critical on a 900m runway I'd use Thruxton if I were you.
On the other hand if you want a flat short (non waterlogged) runway, use Chilbolton which is 410m on 24/06 about 5nm SW of Popham.
G
On the other hand if you want a flat short (non waterlogged) runway, use Chilbolton which is 410m on 24/06 about 5nm SW of Popham.
G
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airclues - why do you ask? I have never found it too much of a problem getting into 21 however take off needs a little more care with fairly tall trees to be crossed on climb out (alternatively if you have sufficient height and speed a gentle turn to carry on the climb down the 26 axis is helpful). I remember watching a Rallye 100 going over the trees this Autumn - it looked very close and the a/c did not reappear until it had turned left away from the circuit - it looked as if it was going back in ground effect!
arrow2
arrow2
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Well according to the office copy:
08, 1% downslope at threshold.
26, 3.3% downslope at threshold.
(I guess therefore there's an upslope somewhere in the middle ;o))
Hope that helps! (Probably won't seeing as you actually asked for the other runway! Doh - sorry!)
[This message has been edited by Daifly (edited 19 December 2000).]
08, 1% downslope at threshold.
26, 3.3% downslope at threshold.
(I guess therefore there's an upslope somewhere in the middle ;o))
Hope that helps! (Probably won't seeing as you actually asked for the other runway! Doh - sorry!)
[This message has been edited by Daifly (edited 19 December 2000).]
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Excuse me for being a tad boastful, I went to Popham the other week for the first time.
We rang up prior and they said "We're waterlogged". We said "We're a helicopter."
That was the only landing fee they'd had for some while, apparently.
And this post has no connection to the slope on the runways, because we didn't need to know that either.
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I got bored with "WhoNeedsRunways"
We rang up prior and they said "We're waterlogged". We said "We're a helicopter."
That was the only landing fee they'd had for some while, apparently.
And this post has no connection to the slope on the runways, because we didn't need to know that either.
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I got bored with "WhoNeedsRunways"
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Just another number
Joined: Jun 2001
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From: UK
arrow2
The reason that I ask is that nobody seems to know. My flight manual says that I must increase the TOD by 6% for each 1% of uphill gradient. If I assume 3%, then I cannot carry a passenger, and have to arrange to meet them at another airfield. The trees seem to be getting taller, although a Yak 52 did lower them by about 5 feet this year.
I have seen some very close shaves this year with heavily loaded aircraft. It is only a matter of time before there is an incident.
So if nobody knows the correct answer, perhaps you can tell be what gradient you use in your performance calculations. Alternatively, if there are any Civil Engineers on the forum, could you tell me how to measure it?
Airclues
The reason that I ask is that nobody seems to know. My flight manual says that I must increase the TOD by 6% for each 1% of uphill gradient. If I assume 3%, then I cannot carry a passenger, and have to arrange to meet them at another airfield. The trees seem to be getting taller, although a Yak 52 did lower them by about 5 feet this year.
I have seen some very close shaves this year with heavily loaded aircraft. It is only a matter of time before there is an incident.
So if nobody knows the correct answer, perhaps you can tell be what gradient you use in your performance calculations. Alternatively, if there are any Civil Engineers on the forum, could you tell me how to measure it?
Airclues
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Is this uphill or downhill? One append seems to say the ground falls away, another talks about not taking a passenger if the slope is greater than 3%... I'm confused now.
Also, don't you just wait til the tide goes out, then get a friendly local to taxi to both ends, measure the height difference by altimeter, convert to meters, and convert that to a percentage against 900 metres... or am I still confused?
Also, don't you just wait til the tide goes out, then get a friendly local to taxi to both ends, measure the height difference by altimeter, convert to meters, and convert that to a percentage against 900 metres... or am I still confused?
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Flying I, I was getting all confused and was referring to the reciprocal, 03. Over the trees, avoid taxiing microlights on 26 and think sh#t, too fast, too fast as the ground slopes down away from you. It would have been less embarassing if I hadn't made a smart ars#ed comment about a Pitts doing exactly the same thing an hour earlier..... 
