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Search: Posts Made By: LoadMan
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Forum: Tech Log
14th Jan 2015, 09:52
Replies: 51
Views: 19,818
Posted By LoadMan

The B787-9 is about 122t OEW.

The B787-9 is about 122t OEW.
Forum: Tech Log
12th Jan 2015, 15:05
Replies: 51
Views: 19,818
Posted By LoadMan

When I worked in research we looked at the same...

When I worked in research we looked at the same figures. We had pretty good and reliable data for a couple of aircraft, including very detailed OEW figures that took into account operational items...
Forum: Spectators Balcony (Spotters Corner)
11th Oct 2007, 21:46
Replies: 165
Views: 38,607
Posted By LoadMan

I actually thought Boeing would get the December...

I actually thought Boeing would get the December date, as I expected them to be conservative. Now, I think they really are conservative. So, I believe the date for first flight, well, it is put with...
Forum: Tech Log
27th Jul 2007, 09:17
Replies: 5
Views: 2,058
Posted By LoadMan

Actually, you can download the manual via eMule...

Actually, you can download the manual via eMule (or other fileshare programs).
Otherwise the Boeing ACAP is always a good place to start from, although performance data are limited.
Forum: Flight Testing
25th Jul 2007, 12:14
Replies: 5
Views: 2,006
Posted By LoadMan

Google for "strain gage skopinski" and...

Google for
"strain gage skopinski"
and download that report from NASA. Not exactly hwat you are looking for, but it is about flight test instrumentation for flight loads measurement. Comparable...
Forum: Rumours & News
19th Jul 2007, 13:19
Replies: 2,761
Views: 738,092
Posted By LoadMan

>It also states that 30 seconds elapsed between...

>It also states that 30 seconds elapsed between touchdown and crash.

This would fit with the video footage. the straight line distance between runway 35L treshold and the crash site is 2km (from...
Forum: Airlines, Airports & Routes
19th Jul 2007, 13:06
Replies: 910
Views: 178,681
Posted By LoadMan

I think the days for Alitalia are counted....

I think the days for Alitalia are counted. Basically other airlines were interested, but demanded pretty much free hand, unhindered from labor unions. The Italian government cannot promise that...
Forum: Rumours & News
18th Jul 2007, 09:21
Replies: 2,761
Views: 738,092
Posted By LoadMan

A320 with 180 pax, Airbus OEW (normally too low)...

A320 with 180 pax, Airbus OEW (normally too low) and some remaining fuel is ~60 tons, maximum MLW is 66 tons for several weight variants.
Landing Field Length requirement would be ~4000-4500ft for...
Forum: Tech Log
17th Jul 2007, 13:46
Replies: 7
Views: 1,585
Posted By LoadMan

This topic is intensively covered in many...

This topic is intensively covered in many pubilcations, still, explicit graphs are rare and not public. Likewise performance graphs of commercial in-service aircraft.


Just take a guess: B737...
Forum: Tech Log
17th Jul 2007, 07:06
Replies: 50
Views: 45,328
Posted By LoadMan

That is one limit. Maneuvers may lead to...

That is one limit. Maneuvers may lead to excessive airframe loads above VD/MD, which is the limit where maneuver loads have to be calculated and the maneuver loads above VD are tghus not accounted...
Forum: Tech Log
16th Jul 2007, 09:18
Replies: 10
Views: 1,903
Posted By LoadMan

I assume Boeing had the ability to make an...

I assume Boeing had the ability to make an elliptical lift distribution before everybody got a computer. But a new wing normally doesn't need winglets. It is interesting when the weight increases and...
Forum: Flight Testing
16th Jul 2007, 07:49
Replies: 16
Views: 5,695
Posted By LoadMan

I cannot comment specifically about the B767, but...

I cannot comment specifically about the B767, but most aircraft experience a raise of pitch stability and then a sudden drop. Hence, an aircraft would experience a slight pitch-up before going beyond...
Forum: Tech Log
14th Jul 2007, 00:05
Replies: 7
Views: 1,962
Posted By LoadMan

I think the B747 was never assessed well. I think...

I think the B747 was never assessed well. I think it makes sense to have a more serious investigation on the wake vortex issue. It may increase the data and finally lead to more reasonable...
Forum: Tech Log
13th Jul 2007, 13:33
Replies: 26
Views: 16,843
Posted By LoadMan

They are indeed, so that stall behavior is...

They are indeed, so that stall behavior is normally quite gentle. I think some early high performance aircraft had problems, along with some surprises about the aerolasticity of wings.
Forum: Tech Log
13th Jul 2007, 13:31
Replies: 7
Views: 1,962
Posted By LoadMan

For example at take-off and landing with a...

For example at take-off and landing with a different slat/flap system.
Forum: Tech Log
13th Jul 2007, 13:26
Replies: 10
Views: 3,617
Posted By LoadMan

There is no simple way, at least if you have...

There is no simple way, at least if you have large flexible aircraft.
Forum: Tech Log
13th Jul 2007, 13:16
Replies: 16
Views: 16,994
Posted By LoadMan

I hope you consider the change the change of TSFC...

I hope you consider the change the change of TSFC over altitude and Mach number as well as thrust setting. Thrust and TSFC are quite ugly functions of both. For a JT9D I would set the TSFC at common...
Forum: Tech Log
13th Jul 2007, 13:08
Replies: 26
Views: 16,843
Posted By LoadMan

At higher angles of attack the lift distribution...

At higher angles of attack the lift distribution normally changes to more outwards loaden wing. As such the local lift coefficient os higher outwards and - as far as I know - the local pressure is...
Forum: Flight Testing
13th Jul 2007, 12:55
Replies: 16
Views: 5,695
Posted By LoadMan

It most likely will be affected by Mach Tuck....

It most likely will be affected by Mach Tuck. Although I am no "Boeing expert", I just took a look at a "comparable aircraft". The tendency to have adverse pitch stability above a certain Mach number...
Showing results 1 to 19 of 19


 
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