Dec. 21, 2021 AFRL, Northrop Grumman demonstrate solar to radio frequency conversion KIRTLAND AIR FORCE BASE, N.M. (AFRL) – The Air Force Research Laboratory’s and Northrop Grumman’s Space Solar Power Incremental Demonstrations and Research (SSPIDR) Project have successfully conducted the first end-to-end demonstration of key hardware for the Arachne flight experiment. A ground