Official Fulqrum Publishing forum
Page 2 of 2 1 2
Show 100 post(s) from this thread on one page

Official Fulqrum Publishing forum (http://forum.fulqrumpublishing.com/index.php)
-   FM/DM threads (http://forum.fulqrumpublishing.com/forumdisplay.php?f=196)
-   -   Violent manoeuvring breaks the Artificial Horizon indicator? (http://forum.fulqrumpublishing.com/showthread.php?t=21481)

Russkly 04-17-2011 03:19 PM
Quote:
Originally Posted by Viper2000 (Post 264643)
The way this works is that the gyro is biased to self-erect.

So if you give it about 5 minutes, it will return to showing level flight...
V. interesting!

Does this account for the DI being constantly out too then?

I'll do some more testing, but IIRC it's out by up to 180 deg. even during level flight and not after manoeuvring.

R

senseispcc 04-17-2011 06:28 PM
Quote:
Originally Posted by DC338 (Post 264358)
No bug. The gyro's are toppled by violent manuevring. British aircraft are not fitted with a caging mechanism (holds the gyro in place) at this stage of the war and so after periods of heavy manuevring you need a fair stretch of straight and level in order for the auto leveling function to work and get your AH back.


Sorry,

But in a book "First light" autor Wellum Geoffrey he write about caging and uncaging instruments (most of the time the artificial horizon), I do think they had this possibility.

Have a nice game.

IvanK 04-17-2011 10:54 PM
Sorry senseipcc, I suggest you re read First light I think you will find the only Gyro caging mentioned was during training when his mate pranged after take off during night flying. He took off with the AH caged .... that was in a Harvard.

Spits and Hurricanes in 1940 did not have the ability to cage the AH.

jimbop 04-18-2011 05:56 AM
Quote:
Originally Posted by IvanK (Post 265511)
AH precession (not as a result of Gyro toppling) is overdone. AH errorrs after extreme manoeuvering (i.e. Gyro limits excedded) is well done. There are 2 possible AH versions the MKI and the MKII each has slightly differrent limits. the limits as detailed in the AP1257 are:

MKI +-60 degrees in Pitch, +- 90 degree in Roll
MKII +_45 degrees in pitch, +- 360 degrees in roll
Helpful, thanks.

Pist-N-Broke 04-22-2011 03:09 PM
Quote:
Originally Posted by IvanK (Post 266312)
Sorry senseipcc, I suggest you re read First light I think you will find the only Gyro caging mentioned was during training when his mate pranged after take off during night flying. He took off with the AH caged .... that was in a Harvard.

Spits and Hurricanes in 1940 did not have the ability to cage the AH.
Why would a Harvard trainer have a caged AH, and not a front line combat aircraft like a Spit or Hurri?

DC338 04-22-2011 10:46 PM
Quote:
Originally Posted by Pist-N-Broke (Post 270578)
Why would a Harvard trainer have a caged AH, and not a front line combat aircraft like a Spit or Hurri?
Because one was built in the US with US instruments and the other was built by the British. Also these were originally built as day VFR fighters. Partial panel is a blast;)


All times are GMT. The time now is 05:54 AM.
Page 2 of 2 1 2
Show 100 post(s) from this thread on one page

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright © 2007 Fulqrum Publishing. All rights reserved.