Is there a way to save Aperture RAW edits (previews) as .tif files?

In iPhoto Preferences/Advanced, it is possible to choose to save RAW edits as .tif files. The resulting files are then stored in the Previews folder inside the iPhoto Library. In Aperture, edits of RAW files are stored in the Previews folder as .jpg files. I am aware that I can export the edited versions as .tif files outside of the Aperture Library. Is there a way to do it inside the Aperture Library, just the way iPhoto does??