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martin perman20/02/2019 21:09:27
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1614 forum posts
67 photos

They must have skirted around the edges of Bedfordshire on the way up from Duxford. As far as Look East was concerned they went from Duxford to High Wycombe direct.

Martin P

Philip Powell20/02/2019 22:34:48
57 forum posts
15 photos

They came from the direction of St Neots, flew down the RAE Bedford car park, sorry runway, then turned 90 degrees left heading for Cranfield.

Phil.

Andrew Johnston26/02/2019 18:39:20
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4704 forum posts
532 photos

Must be springtime; heard, and saw, the first Spitfire of the year doing aerobatics this afternoon. thumbs up

Andrew

Tim Chambers26/02/2019 19:23:36
82 forum posts
33 photos

Working in the garden this afternoon to the rasp of a Hartzell as a Harvard was doing aerobatics in the distance.

Ian S C27/02/2019 09:42:20
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7425 forum posts
230 photos

I think you'll find that the Harvard has a Hamilton Standard prop, it won't get a C of A with anything else,. We used Hartzell, and McCaullay(?spelling) props on our Cessna 180/185/188 and Piper Pawnee and Fletcher aircraft.

Unfortunately they use minimum blade length, and reduced RPM to keep the noise down, it also lowers stress on the engine, and reduces fuel consumption.

Ian S C

martin perman27/02/2019 10:49:31
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1614 forum posts
67 photos

There is a T6 Texan that the post mentioned that used a Hartzell propeller but it is 50 years younger and built by Beechcraft as a turboptop trainer.

Martin P

Neil Wyatt27/02/2019 13:47:04
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Moderator
16248 forum posts
679 photos
74 articles

My workshop got buzzed by two Hercules at about 150 feet yesterday.

Jon Lawes27/02/2019 17:10:35
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313 forum posts

All the photographers at Boscombe Down complain bitterly that their Harvard was sold. It was a perfect platform for photography.

martin perman27/02/2019 17:27:20
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1614 forum posts
67 photos

The weather has dragged out loads of PPL flyers today, the sky above my house has been very busy today.

Martin P

Danny M2Z28/02/2019 05:37:50
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740 forum posts
278 photos

It appears that our (Australian) govt. has committed funds to a new locally designed advanced combat drone Australian Drone

* Danny M *

Martin Connelly28/02/2019 08:15:53
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847 forum posts
99 photos

Marham are planning to have a 9 Tornado formation fly to Cranwell and back today. The aim is to fly over Cranwell at 15:15hrs. This is all dependent on the weather, yesterday would have been perfect, today may not be so good.

Martin C

martin perman28/02/2019 10:29:48
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1614 forum posts
67 photos

Just had permission from Management so Son In Law and myself will take the 84 mile dash up the A1

Martin P

Martin Connelly28/02/2019 14:14:12
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847 forum posts
99 photos

Tornado flight details

**LINK**

Martin C

martin perman28/02/2019 17:37:34
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1614 forum posts
67 photos

Arrived to find RAF Cranwell heaving with parked cars and a very low cloud base, it rained all the way up but wasnt when we got there, bang on 15:15 all nine came in from the south in Diamond Nine with a Hawk on their port side obviously for taking pictures, sadly the idiot behind the camera didnt allow the camera time to focus so picture not perfect.

img_7188.jpg

Martin Connelly28/02/2019 22:52:10
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847 forum posts
99 photos

Glad to hear you made it. I saw them after they left Cranwell but they were disappearing in the low cloud as they passed.

Martin C

Ian S C05/03/2019 10:29:09
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7425 forum posts
230 photos

There are some photos taken at RAF Marham of the take off and return of the nine GR-4 Tornados, they are on the Wings over New Zealand web site.

Ian S C

Ian S C05/03/2019 14:04:18
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7425 forum posts
230 photos

Might be of interest to Andrew, currently there are a pair of Grob G-109B powered gliders in NZ, piloted by Tim Dews(with his son Ben), and Jonathan Turnbull, they flew a trip from just south of Auckland , to a bit north of Christchurch the other day, escorted by a local DH-1 Chipmunk. One machine is G-DFIX, not sure about the other, it might be G-CIND.

Ian S C

Cornish Jack08/03/2019 11:28:46
908 forum posts
120 photos

Just come across this - https://www.abc.net.au/news/2019-03-08/nasa-captures-incredible-images-of-supersonic-shockwaves-intera/10882590

Don't understand the technical significance but VERY impressive images!

rgds

Bill

DrDave08/03/2019 12:03:24
163 forum posts
32 photos
Posted by Cornish Jack on 08/03/2019 11:28:46:

Just come across this - https://www.abc.net.au/news/2019-03-08/nasa-captures-incredible-images-of-supersonic-shockwaves-intera/10882590

Don't understand the technical significance but VERY impressive images!

rgds

Bill

That’s impressive photography! I’ve only seen this type of photograph from a supersonic wind tunnel before: to achieve these results in the Great Blue Yonder opens up all sorts of possibilities.

Dave

Speedy Builder508/03/2019 12:18:25
1790 forum posts
127 photos

Interesting, As an apprentice at Weybridge, we used Schleron image photography for taking shockwave photos of wind tunnel models at mach 6.0 back in 1965. The breakthrough is doing this via telemetry in free air. Back in the day, the "flash" came from a bank of high voltage charged capacitors. During a 30 second run, the angle of attack could be changed 3 times, with 3 photos being taken from separate banks of capacitors. The wind tunnel working section was between a huge steel chamber (Statosphere chamber) and a barage baloon inflated with dried air which had passed over huge trays of silica gel. Either side of the working section were huge gate valves. These were closed, the "strato chamber" pumped out to near vacuum. When the "go" button was pressed, the gate valves opened and the air rushed through the plenum section, click, alter angle of attack, click etc and 30 seconds later it was all over.
BobH

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