Picture of the day. (34 Viewers)

[Elvis]

Obviously photoshoped (maybe long before Photoshop...) . All aircrafts have their propellers in the same position...

...so?

 

[WARSPITER]

It's still a good pic.

 

[MiTasol]

...so?

Never happened in real life before the turboprop Lockheed Electra was built and even then only when the aircraft was approaching phase sync. In full phase sync every prop is 22.5 or 45 off angle to all the others.

 

[Elvis]

Never happened in real life before the turboprop Lockheed Electra was built and even then only when the aircraft was approaching phase sync. In full phase sync every prop is 22.5 or 45 off angle to all the others.

...and?

 

[Elvis]

It's still a good pic.

Thank you

 

[Zippythehog]

Obviously photoshoped (maybe long before Photoshop...) . All aircrafts have their propellers in the same position...

No, not photoshop.
Do you know how many attempts it took to get the propellers synched?

"Sorry chaps, number two is noticeably out from Squadron Leader's ship. Let's have another go."

The higher aircraft have a higher true airspeed, so it's completely reasonable that they have flaps and gear down. They can hold formation that way.

 

[Zippythehog]

...Lancasters...

View attachment 747906

Anyway, I always liked Elsa the best.

 

[Snautzer01]

...and?

He said:

In full phase sync every prop is 22.5 or 45 off angle to all the others.

 

[Bretoal2]

No, not photoshop.
Do you know how many attempts it took to get the propellers synched?

"Sorry chaps, number two is noticeably out from Squadron Leader's ship. Let's have another go."

The higher aircraft have a higher true airspeed, so it's completely reasonable that they have flaps and gear down. They can hold formation that way.

Ok Ok. Let's not talk about planes anymore, but only about fundamental optical rules.

Here is a little retro-engineering work on the photomontage: I brought the 4 planes to the same size. We see very clearly that they are all presented from the same perspective, which is strictly impossible and demonstrates deception.

It's still a good pic.

A good electronic drawing, but not a photo.

 

[Elvis]

Looks like a photo to me....I'm callin' it a photo. =)

 

[MiTasol]

...and?

Phase sync means the pulses of the air from the prop blades hitting the leading edge of the wing are spread out over the full 360 degrees of rotation and therefore minimised - in that lanc photo every blade pulse would hit the leading edges at the same time producing considerable vibration and possibly destructive harmonics. A good example of that was found on the early Sikorsky S-58T helicopters and resulted in the tails separating from the rest of the aircraft.

When in phase sync the Allison 501 (T-56) engines are all turning at exactly 13,820 rpm - no piston engine was ever able to synchronise that accurately.

 

[Zippythehog]

Phase sync means the pulses of the air from the prop blades hitting the leading edge of the wing are spread out over the full 360 degrees of rotation and therefore minimised - in that lanc photo every blade pulse would hit the leading edges at the same time producing considerable vibration and possibly destructive harmonics. A good example of that was found on the early Sikorsky S-58T helicopters and resulted in the tails separating from the rest of the aircraft.

When in phase sync the Allison 501 (T-56) engines are all turning at exactly 13,820 rpm - no piston engine was ever able to synchronise that accurately.

The mighty King Air 350 (maybe 200s?) has syncro-phasers. This isn't a weapon, but prevents an unpleasant and potentially damaging harmonic between the props.

 

[Elvis]

Phase sync means the pulses of the air from the prop blades hitting the leading edge of the wing are spread out over the full 360 degrees of rotation and therefore minimised - in that lanc photo every blade pulse would hit the leading edges at the same time producing considerable vibration and possibly destructive harmonics. A good example of that was found on the early Sikorsky S-58T helicopters and resulted in the tails separating from the rest of the aircraft.

When in phase sync the Allison 501 (T-56) engines are all turning at exactly 13,820 rpm - no piston engine was ever able to synchronise that accurately.

...so?

 

[WARSPITER]

Ok Ok. Let's not talk about planes anymore, but only about fundamental optical rules.

Here is a little retro-engineering work on the photomontage: I brought the 4 planes to the same size. We see very clearly that they are all presented from the same perspective, which is strictly impossible and demonstrates deception.



A good electronic drawing, but not a photo.

Fits nicely here then. Picture of the day thread not photo of the day so it's all good. Nice work with the resizing too.

 

[Elvis]

Fits nicely here then. Picture of the day thread not photo of the day so it's all good. Nice work with the resizing too.

It was just a picture I found on the net. All I did was post it here.

 

[Snautzer01]

Airframes orders a drink for himself. Other punters seem amazed.

Foto Kriegsweihnachten Wehrmacht Soldaten Bierflaschen Feier Gruppenbild | eBay

Da es sich hier um gebrauchte Ware handelt, weisen die Fotos altersbedingte Gebrauchsspuren auf, diese können sein: Flecken, Beschriftungen, gestoßene Ecken und/ oder Knicke. Foto / Porträt.

www.ebay.de

 

[Wurger]

I have thought it was our forum team visiting Terry.

 

[Gnomey]

Nice shots!

 

[syscom3]

The remains of the B-25 that Crashed Into the Empire State Building. July 28, 1945

 

[Elvis]

I remember my dad telling me about that.