Additionally, the X-22 was to provide more insight into the tactical application of vertical take-off troop transporters such as the preceding Hiller X-18 and the X-22 successor, the Bell XV-15.
Na mgbakwunye, X-22 bụ iji nyekwuo nghọta banyere iji ụzọ aghụghọ nke ndị na-ebugharị ndị agha agha kwụ ọtọ dị ka Hiller X-18 na nke mbụ X-22, Bell XV-15.