Aircraft General Discussion

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Aircraft General Discussion

This topic has 2,012 replies, 207 voices, and was last updated 14 March 2025 at 18:50 by Martin Connelly.

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20 February 2019 at 22:34 #397251
Philip Powell
Participant
@philippowell34749
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.
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26 February 2019 at 18:39 #398056
Anonymous
Must be springtime; heard, and saw, the first Spitfire of the year doing aerobatics this afternoon.

Andrew
26 February 2019 at 19:23 #398064
Tim Chambers
Participant
@timchambers76147
Working in the garden this afternoon to the rasp of a Hartzell as a Harvard was doing aerobatics in the distance.
27 February 2019 at 09:42 #398100
Ian S C
Participant
@iansc
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
27 February 2019 at 10:49 #398108
martin perman 1
Participant
@martinperman1
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
27 February 2019 at 13:47 #398121
Neil Wyatt
Moderator
@neilwyatt
My workshop got buzzed by two Hercules at about 150 feet yesterday.
27 February 2019 at 17:10 #398138
Jon Lawes
Participant
@jonlawes51698
All the photographers at Boscombe Down complain bitterly that their Harvard was sold. It was a perfect platform for photography.
27 February 2019 at 17:27 #398142
martin perman 1
Participant
@martinperman1
The weather has dragged out loads of PPL flyers today, the sky above my house has been very busy today.

Martin P
28 February 2019 at 05:37 #398201
Danny M2Z
Participant
@dannym2z
It appears that our (Australian) govt. has committed funds to a new locally designed advanced combat drone Australian Drone

* Danny M *
28 February 2019 at 08:15 #398207
Martin Connelly
Participant
@martinconnelly55370
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
28 February 2019 at 10:29 #398216
martin perman 1
Participant
@martinperman1
Just had permission from Management so Son In Law and myself will take the 84 mile dash up the A1

Martin P
28 February 2019 at 14:14 #398240
Martin Connelly
Participant
@martinconnelly55370
Tornado flight details

**LINK**

Martin C
28 February 2019 at 17:37 #398263
martin perman 1
Participant
@martinperman1
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.
28 February 2019 at 22:52 #398293
Martin Connelly
Participant
@martinconnelly55370
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
5 March 2019 at 10:29 #398777
Ian S C
Participant
@iansc
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
5 March 2019 at 14:04 #398804
Ian S C
Participant
@iansc
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
8 March 2019 at 11:28 #399236
Cornish Jack
Participant
@cornishjack
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
8 March 2019 at 12:03 #399239
DrDave
Participant
@drdave
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
8 March 2019 at 12:18 #399241
Speedy Builder5
Participant
@speedybuilder5
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
11 March 2019 at 20:15 #399776
martin perman 1
Participant
@martinperman1
Gentlemen,

I read in Flypast that a Westland Wessex 5 has been restored to flying condition and is about to join the airshow circuit in the UK.

Martin P
19 March 2019 at 18:34 #401268
Martin Connelly
Participant
@martinconnelly55370
I saw one of the new f35 fighters doing a practice approach yesterday. Good roar as it put on the power to go around.

Martin C
11 April 2019 at 14:19 #404610
martin perman 1
Participant
@martinperman1
The airshow season is coming soon so Shuttleworth had their Spitfire doing aerobatics yesterday for a good 30 – 40 minutes and today we had the Lysander circling above us, weve had clear skys both days so a good view of them.

Martin P
11 April 2019 at 14:19 #404611
martin perman 1
Participant
@martinperman1
The airshow season is coming soon so Shuttleworth had their Spitfire doing aerobatics yesterday for a good 30 – 40 minutes and today we had the Lysander circling above us, weve had clear skys both days so a good view of them.

Martin P
11 April 2019 at 14:20 #404612
martin perman 1
Participant
@martinperman1
Ooops to many clicks.
11 April 2019 at 15:10 #404620
Robert Atkinson 2
Participant
@robertatkinson2
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

Been there, done that – 21 years ago with a car!
https://www.reddit.com/r/pics/comments/uvtjg/shockwaves_visible_as_thrust_ssc_breaks_sound/ and http://www.flymicro.com/photolib/boom-boom.cfm

I know the two photographers, built the machmeter and was part of the team.

Robert G8RPI.
Author

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