tjg
I hope you don’t think it a nitpick, but I suspect you mean tailless delta wing aircraft.
The Javelin (a delta winged aircraft if ever there was one) most certainly has flaps and as a result has a bundle of lift in the flare without a high nose attitude.
The Tu-144 that crashed at Paris (the version with a canard) had an effective flap as all the trailing edged surfaces were well down at touchdown unlike an ordinary tailless delta where all the trailing edge surfaces are necessarily up to flare. As a result it landed some 25 kts slower than the original version without a canard.
So I would not go so far as Genghis and say deltas don’t need them as I see that as a tad simplistic. Its no good having all the Clmax in the world if you can’t use it. Yes deltas can use a very high AOA and get a tremendous max lift coefficient as a result but at the expense of a very high nose attitude. This leads not just to view problems (as solved by drooped noses) but even more important (and not much talked about) the very high available Cl is quite unusable on the approach as the back end hits first with any reasonable length of undercarriage leg. As a result the approach speed has to be stuffed right up and you sit there thinking I wish I had some flaps on this thing. It was nothing to have to land the HP 115 at 90 kts to avoid clobbering the back end - despite a few minutes earlier being quite happy with the handling at 60kts.
Cheers
JF