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Search: Posts Made By: HazelNuts39
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Forum: Tech Log
29th Aug 2011, 17:05
Replies: 3,435
Views: 1,668,366
Posted By HazelNuts39

Lonewolf 50, I do not have access to a...

Lonewolf 50,

I do not have access to a flight simulator or computer simulation. I did no more than define a condition where '1 g' requires an angle of attack of five degrees, and the combination...
Forum: Tech Log
29th Aug 2011, 07:21
Replies: 3,435
Views: 1,668,366
Posted By HazelNuts39

Lonewolf 50; Please accept my apologies for...

Lonewolf 50;

Please accept my apologies for misreading your post. I think we also agree that five degrees nose-up is not the optimum response to UAS at FL350.

P.S. Rereading your post caused me...
Forum: Tech Log
25th Aug 2011, 14:50
Replies: 3,435
Views: 1,668,366
Posted By HazelNuts39

For no good reason? Two apparently very brief...

For no good reason? Two apparently very brief occurences of stall warning were observed at 02:10:10 and 02:10:13 (page 29 of BEA#3). The reason for those is clearly shown in the traces for normal...
Forum: Tech Log
18th Aug 2011, 17:46
Replies: 3,435
Views: 1,668,366
Posted By HazelNuts39

RE:: Lyman #3036 It all depends. Yes, as...

RE:: Lyman #3036

It all depends. Yes, as you say, pitch attitude in level flight and still air would have been about 2.5 degrees nose-up. At AP disconnect, pitch was zero and slowly increasing at...
Forum: Tech Log
5th Aug 2011, 09:33
Replies: 3,435
Views: 1,668,366
Posted By HazelNuts39

My understanding from the Perpignan report is...

My understanding from the Perpignan report is that, with autotrim in operation, the THS only moves when the elevator goes past the neutral position: nose down elevator will command the THS to move...
Forum: Tech Log
26th Jun 2011, 20:47
Replies: 3,435
Views: 1,668,366
Posted By HazelNuts39

When you're flying at Mach 0.6, and have lost...

When you're flying at Mach 0.6, and have lost your airspeeds, how do you know where your stall zone is on the AoA indicator?
Forum: Tech Log
22nd Jun 2011, 13:27
Replies: 3,435
Views: 1,668,366
Posted By HazelNuts39

Barit1; bank 28 degrees, 1.133 g. In my...

Barit1;

bank 28 degrees, 1.133 g. In my simulation TAS changed progressively from 260 to 150 kt in the last 120 seconds.
Forum: Tech Log
22nd Jun 2011, 10:07
Replies: 3,435
Views: 1,668,366
Posted By HazelNuts39

The average turn radius of about 1.23 nm, at an...

The average turn radius of about 1.23 nm, at an airspeed of 150 kt TAS, corresponds to a turn rate of 1.925 deg/s at an angle of bank of about 15 degrees, n=1.035.
Forum: Tech Log
20th Jun 2011, 09:09
Replies: 3,435
Views: 1,668,366
Posted By HazelNuts39

More terminology

From the Introduction of NACA Report No. 460, The Characteristics of 78 Related Airfoil Sections ...: Very old stuff, but still valid. The 'mean line' is equidistant between top and bottom surfaces...
Forum: Tech Log
19th Jun 2011, 20:52
Replies: 3,435
Views: 1,668,366
Posted By HazelNuts39

About angles

Castle Don;

The AoA of most large airplanes is defined as the angle between the (undisturbed) airflow and the airplane's longitudinal reference axis, and is correctly shown in mm43's super...
Forum: Tech Log
18th Jun 2011, 15:03
Replies: 3,435
Views: 1,668,366
Posted By HazelNuts39

Perhaps not really important in the overall...

Perhaps not really important in the overall context of your very informative post, but the airplane must have begun to stall shortly before reaching its apogee at FL380, and was well into a fully...
Forum: Tech Log
7th Jun 2011, 09:34
Replies: 3,435
Views: 1,668,366
Posted By HazelNuts39

Clogging of the pitots is thought to be caused by...

Clogging of the pitots is thought to be caused by ingestion of ice particles. At -40 °C there was no liquid water to cause icing of the airframe.

Increasing rate of climb to 7000 and back to 700...
Forum: Tech Log
5th Jun 2011, 16:13
Replies: 3,435
Views: 1,668,366
Posted By HazelNuts39

Machinbird; First three sentences: Yes. On...

Machinbird;

First three sentences: Yes. On the other hand, I was mainly interested in the motion of the airplane, and did not work out the "seat of the pants feel". The lift coefficient and hence...
Forum: Tech Log
5th Jun 2011, 10:39
Replies: 3,435
Views: 1,668,366
Posted By HazelNuts39

No, you are not reading the graph correctly....

No, you are not reading the graph correctly. Perhaps you should read it together with another graph...
Forum: Tech Log
5th Jun 2011, 08:17
Replies: 3,435
Views: 1,668,366
Posted By HazelNuts39

G's

Here is a graph (https://docs.google.com/leaf?id=0B0CqniOzW0rjYjY2ZGRhNzUtYjIzYy00ZTM5LTkxNjYtMzZlMGYyYzY5Zjkw&hl=en_GB&authkey=CLeNnpMK) showing my estimate of the G's that produce the trajectory...
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