Late Second World War radar countermeasure known as Lace

[fortrena]

While Window is a rather well known form of radar countermeasure, has anyone heard of a late Second World War radar countermeasure known as Lace, which was seemingly developed to deal with German short wave radar sets? The aluminium strips of Lace would be significantly narrower and shorter than the ones for Window.

 

[Grey Havoc]

I've heard of it, but I don't think I have come across much on it, sorry.

 

[fortrena]

Many thanks.

The Canada Aviation and Space Museum in Ottawa has a few rolls (six?) of Lace, donated a good fifteen years ago.

 

[Josh_TN]

First I've heard of it. Did differ from Window in anything but dimension?

 

[fortrena]

From what I can recall when the material arrived, it was narrow aluminium foil on rolls, with onion skin (?) paper to separate the layers of foil.

 

[T. A. Gardner]

Lace or ribbon chaff was used against long wave radar where you needed longer dipole to effectively reflect the signal



While this is a bit extreme on length, this sort of ribbon chaff was used during WW 2 against mostly long wave air search radar. It would be streamed out of the plane manually then released once unwound.

 

[yellowaster]

Long streamers of metal foil were known as 'rope' in the UK (and also in the US). One type (CHR0) used against German 70-200 MHz EW radar was 400ft long and 0.5 inch wide.