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Re: Old Sharjah film
Posted: 25 Sep 2010, 17:27
by DelP
According to Wiki (

) automatic slats were developed independently by Gustav Lachmann in Germany
and Handley Page.
Both parties reached an agreement on patent and Lachmann went on to spend the rest of his working life with Handley Page.
The licensing of the Handley Page Automatic Slat became a major source of income for the company.
ATB,
Derek

Re: Old Sharjah film
Posted: 25 Sep 2010, 18:05
by Garry Russell
Thanks for that Derek

Re: Old Sharjah film
Posted: 25 Sep 2010, 19:08
by cstorey
I did not realise they were automatic, because they appear ( at about 3.17 in the second film) to be locked open during taxying - or is it that they automatically closed on reaching 53 kts?
Re: Old Sharjah film
Posted: 25 Sep 2010, 19:13
by Garry Russell
Hmmm....sureley that would be the case....open up to 53 then closed.
Re: Old Sharjah film
Posted: 25 Sep 2010, 19:21
by DelP
cstorey wrote:I did not realise they were automatic, because they appear ( at about 3.17 in the second film) to be locked open during taxying - or is it that they automatically closed on reaching 53 kts?
That was the case....on the HP42 the slats opened at 53kts or less and closed automatically above that speed.
All photos and film of the '42 show them parked and taxying with slats extended
ATB,
Derek

Re: Old Sharjah film
Posted: 25 Sep 2010, 19:38
by cstorey
Thank you Derek - you learn something new every day. I only ever flew one aeroplane with auto slats, and that on one occasion only. I think it was a Rallye ( my logbooks for the period have gone missing) but I remember the noticeable clang as the bl**dy things opened and shut which gave one a nasty fright - IIRC they were governed not by speed but by angle of attack, so that they tended to open just after rotation !
Re: Old Sharjah film
Posted: 25 Sep 2010, 20:14
by DelP
Paul K wrote:Any one else feel a little sense of longing when they watch such things ?
Well, yes.....I started school at the age of 5 in Malta. The headmaster always wore perfectly pressed whites...
Paul K wrote:Oh yes, forgot...we need a native FSX H.P. 42 !
Well you won't get it from me

..although I have been giving the old FS9 model a spring-clean
ATB,
Derek
Re: Old Sharjah film
Posted: 25 Sep 2010, 21:01
by DaveB
I did wonder if that last comment was worthy of a black eye
ATB
DaveB

Re: Old Sharjah film
Posted: 25 Sep 2010, 21:44
by DelP
Re: Old Sharjah film
Posted: 25 Sep 2010, 22:07
by DaveB