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Search: Posts Made By: pchapman
Showing results 1 to 34 of 34
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Forum: Accidents and Close Calls
10th Dec 2022, 13:40
Replies: 298
Views: 181,814
Posted By pchapman

All the airshow regs would be a whole different...

All the airshow regs would be a whole different thread, but yes in USA & Canada some flight over the crowd is still allowed -- but only "simple" flying.

For example I checked the current Canadian...
Forum: Private Flying
1st Apr 2022, 00:11
Replies: 48
Views: 5,913
Posted By pchapman

It is tough to argue the subtleties of these...

It is tough to argue the subtleties of these situations; one gets buffeted on all sides.
One person says the plane might have too much lift after touchdown and still be light on its wheels. So I...
Forum: Private Flying
31st Mar 2022, 18:21
Replies: 48
Views: 5,913
Posted By pchapman

Let's not forget that angle of attack is in there...

Let's not forget that angle of attack is in there somewhere too! Getting the nose down for tri gear should make a big difference (depending on all the angles and incidence and wing sections...
Forum: Private Flying
30th Mar 2022, 17:19
Replies: 48
Views: 5,913
Posted By pchapman

vs. I think we could have a good long...

vs.


I think we could have a good long debate on that whole issue -- maybe in a new thread!

Yes one doesn't want to start landing way too fast, especially if talking about a larger heavier...
Forum: Accidents and Close Calls
30th Mar 2022, 15:42
Replies: 6
Views: 3,032
Posted By pchapman

Interesting. So would you consider it worse than...

Interesting. So would you consider it worse than a cornfield for landing?
Sometimes one imagines that a forced landing into tougher crops might provide somewhat of a carrier landing deceleration,...
Forum: Accidents and Close Calls
5th Nov 2021, 15:54
Replies: 65
Views: 25,846
Posted By pchapman

You got a better idea? Ok, it is a turbine...

You got a better idea? Ok, it is a turbine aircraft with good altitude performance, so maybe that's only a small difference in altitude, fair enough.
The pilot report stated, "The stall and...
Forum: Accidents and Close Calls
4th Nov 2021, 21:31
Replies: 65
Views: 25,846
Posted By pchapman

Of course every dropzone & skydiving aircraft...

Of course every dropzone & skydiving aircraft operator have their own procedures for handling jump run without stalling. What jump run speeds, what engine & flap settings, how many jumpers outside...
Forum: Accidents and Close Calls
27th Feb 2021, 01:49
Replies: 17
Views: 5,514
Posted By pchapman

Not actually a factor on the date of the accident...

Not actually a factor on the date of the accident flight, I *think*.
Still, even this "4 airports" rule has exceptions. I was just alerted (by a COPA email) to Transport Canada's AIC 6/21, which...
Forum: Military Aviation
8th Dec 2020, 21:17
Replies: 47
Views: 19,061
Posted By pchapman

Yeager was indeed a great fighter & test pilot...

Yeager was indeed a great fighter & test pilot who achieved high rank, although like everyone he had his failings too. He is so universally lauded so a little critique is OK too. He could be quite...
Forum: Military Aviation
23rd May 2020, 21:56
Replies: 283
Views: 203,781
Posted By pchapman

Although the descent angle wasn't nearly as...

Although the descent angle wasn't nearly as vertical as it seemed to people, based on some of the comments, in this post I'd like to address that the timing of the ejection sequence.
The time from...
Forum: Military Aviation
23rd May 2020, 21:05
Replies: 283
Views: 203,781
Posted By pchapman

Does anyone have a link to the original video...

Does anyone have a link to the original video which gives a "new video angle" seen in the video in post #145, the CBC "Key moments in the Snowbirds crash" video with a former Snowbirds pilot...
Forum: Military Aviation
20th May 2020, 20:57
Replies: 283
Views: 203,781
Posted By pchapman

I'd like to add a bit to Dune's excellent...

I'd like to add a bit to Dune's excellent technical post on the ejection system. I'm no expert on military stuff though, only being a PPL / skydiver / trained aero engineer.

Modern military...
Forum: Tech Log
17th Apr 2020, 12:32
Replies: 16
Views: 6,448
Posted By pchapman

@ the original poster: One can also have a...

@ the original poster:
One can also have a steel pin in steel fittings, attached to aluminum spars.
Google something like 'Corsair wing fold mechanism'. I'm not sure but there seems to be just a...
Forum: Rumours & News
11th Jan 2020, 12:07
Replies: 685
Views: 1,732,895
Posted By pchapman

That seemed a reasonable article -- Yes people...

That seemed a reasonable article -- Yes people who are all keyed up for incoming enemy air strikes might well make mistakes.
In a similar vein, one article I heard of mentions other Iranian SAM and...
Forum: Private Flying
20th Nov 2019, 18:31
Replies: 34
Views: 11,190
Posted By pchapman

Some good stuff in this thread, contrasting all...

Some good stuff in this thread, contrasting all sorts of different aircraft which may have a low glide ratio -- some military jets, parachutes, lifting bodies, Space Shuttles, ultralights /...
Forum: Private Flying
15th Nov 2019, 23:04
Replies: 34
Views: 11,190
Posted By pchapman

Interesting thoughts. I kind of like it. ...

Interesting thoughts. I kind of like it.
Although I haven't thought about the relationship of the best glide speed and the typical approach speeds specified for aircraft. Someone else can look into...
Forum: The Pacific: General Aviation & Questions
23rd Jul 2019, 11:34
Replies: 30
Views: 11,111
Posted By pchapman

I hope nobody minds an older thread being dredged...

I hope nobody minds an older thread being dredged up just to post some NTSB info relevant to the thread, the Preliminary report from back in June 2018. It's actually a useful description of the...
Forum: Accidents and Close Calls
20th Jul 2019, 23:29
Replies: 32
Views: 25,424
Posted By pchapman

Yes it would be silly to ground an aircraft that...

Yes it would be silly to ground an aircraft that had a wing structural failure after the tail had already been torn off due to outside influences (such as overspeed after stall, or entanglement with...
Forum: Rumours & News
5th Apr 2019, 19:19
Replies: 5,109
Views: 13,082,680
Posted By pchapman

Not sure about jumping into this 3300+ post...

Not sure about jumping into this 3300+ post thread but here goes:
I'm concerned about the crew's actions both for the manual trim attempt, and with the electrical trim attempts just before they lose...
Forum: Rotorheads
13th Mar 2018, 21:15
Replies: 464
Views: 181,932
Posted By pchapman

Regarding Australia: I see you posted about...

Regarding Australia:

I see you posted about that already in 2010.

(Just one update to your understanding: The 'plastic rod' holding the 3-ring, that gets pulled, if it follows skydiving...
Forum: Canada
28th Nov 2017, 16:31
Replies: 4
Views: 2,905
Posted By pchapman

I came across this on programs like NASA ASRS...

I came across this on programs like NASA ASRS internationally: https://asrs.arc.nasa.gov/international/overview.html
It mentions a Canadian program CASRP, which nowadays is known as SECURITAS:...
Forum: Passengers & SLF (Self Loading Freight)
4th Aug 2017, 13:18
Replies: 40
Views: 24,378
Posted By pchapman

Reports in Canada make it sound like Air Transat...

Reports in Canada make it sound like Air Transat could have gotten assistance for the plane, despite all the other planes (20 or 30, not clear) that diverted to Ottawa (only a medium sized airport...
Forum: North America
23rd Feb 2017, 17:13
Replies: 82
Views: 39,907
Posted By pchapman

I watched one of the videos that are out on news...

I watched one of the videos that are out on news sites. I see that some of the previous news reports gave an incorrect impression.

It looks like Harrison wasn't faced with an airliner under his...
Forum: Rumours & News
2nd Feb 2016, 05:32
Replies: 49
Views: 25,923
Posted By pchapman

Re: the -1g push that's a side show to the...

Re: the -1g push that's a side show to the thread:

Wouldn't a push typically be needed when you roll inverted? (Even if the aircraft is a more symmetrical type, and not draggier and less...
Forum: Aviation History and Nostalgia
7th Dec 2014, 22:20
Replies: 23
Views: 5,279
Posted By pchapman

My understanding of the high scoring issue...

My understanding of the high scoring issue follows along with what others have said, with a few additions. I say what I do just as someone with an aviation background who has read a bunch of war...
Forum: Rumours & News
8th Nov 2014, 03:36
Replies: 281
Views: 221,438
Posted By pchapman

I've edited out what I had just written because...

I've edited out what I had just written because of new info I read.

The Guardian article recently mentioned, did make it seem like the pneumatic pistons would hold the tail down at Mach 1.4 as...
Forum: Rumours & News
7th Nov 2014, 13:48
Replies: 281
Views: 221,438
Posted By pchapman

I found the following in a forum without any...

I found the following in a forum without any attribution to the original source - so it isn't the best evidence. Still, on the face of it, it confirms that it is a physical lock. It also confirms...
Forum: Rumours & News
6th Nov 2014, 16:20
Replies: 281
Views: 221,438
Posted By pchapman

Video from 2nd powered flight is instructive...

Video from 2nd powered flight is instructive about one normal sequence of events, as it looks back over the tail and includes cockpit audio that seems synchronized:
...
Forum: Rumours & News
6th Nov 2014, 14:25
Replies: 281
Views: 221,438
Posted By pchapman

For high speed ejections we always have to look...

For high speed ejections we always have to look at the equivalent airspeed (EAS). That's what basically matters for wind blast. (Although I guess there are heating effects which might not relate...
Forum: Rumours & News
4th Nov 2014, 15:00
Replies: 281
Views: 221,438
Posted By pchapman

Deptrai quoted: "Two main pneumatic 625-psi...

Deptrai quoted: "Two main pneumatic 625-psi actuators with a 9.5-in bore and 31-in stroke, change the position of the feather ..."

625 psi (max?) over an area corresponding to 9.5" diameter...
Forum: Rumours & News
4th Nov 2014, 06:19
Replies: 281
Views: 221,438
Posted By pchapman

Just for reference, to wrap one's head around how...

Just for reference, to wrap one's head around how a vehicle like SS2 might work, here's info on Space Ship ONE. I don't know what systems and methods may have changed when scaling up to Space Ship...
Forum: Rumours & News
1st Nov 2014, 17:48
Replies: 281
Views: 221,438
Posted By pchapman

Just musings: It does indeed look like the...

Just musings:

It does indeed look like the aircraft did a complete 180, as PrvtPilotRaderTech wrote, but it isn't certain. And it possibly happened very suddenly. (The Daily Mail does have good...
Forum: Tech Log
27th Oct 2011, 16:22
Replies: 1,412
Views: 469,375
Posted By pchapman

Re: 1g felt? The BEA interim report #3...

Re: 1g felt?

The BEA interim report #3 shows the last data before impact of 1.012 g Nz, -.17 Nx (lateral), -.10 Ny (longitudinal). 16.2 deg nose up, 5.3 deg L roll, -10912 fpm. The traces show...
Forum: Aviation History and Nostalgia
5th Sep 2010, 22:51
Replies: 21
Views: 9,298
Posted By pchapman

The Mr Spitfire show did show up on a file...

The Mr Spitfire show did show up on a file sharing website, FWIW.
(Link at THE EXTRAORDINARY MR. SPITFIRE (http://uprius.com/view1.php?id=242223))
I haven't watched it all, but it seems to have...
Showing results 1 to 34 of 34


 
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