This indicates that the stage shown is a propellant tank. The engine on another stage is drawing propellants from this tank; performance shown is for that of the engine on the other stage.

• Used on stage: Albatros Momentum Block. on launch vehicle: Albatros.

• Used on stage: MAKS Tank. on launch vehicle: MAKS.

• Used on stage: McDonnell-Douglas ILRV Drop Tanks.

• Used on stage: Pegasus Tanks. on launch vehicle: Pegasus VTOVL.

• Used on stage: Rombus Tank. on launch vehicle: Rombus.

• Used on stage: Shuttle Super Lightweight Tank. on launch vehicle: Shuttle ISS.

• Used on stage: Shuttle Tank. on launch vehicle: IHLLV.

• Used on stage: Shuttle Tank. on launch vehicle: Saturn Shuttle.

• Used on stage: Shuttle Tank. on launch vehicle: Shuttle.

• Used on stage: Shuttle Tank. on launch vehicle: Shuttle ASRM.

• Used on stage: Shuttle Tank. on launch vehicle: Shuttle C.

• Used on stage: Shuttle Tank. on launch vehicle: Shuttle LRB.

• Used on stage: Starlifter Tank. on launch vehicle: Starclipper.

• Used on stage: X-15A-2 Tanks. on launch vehicle: X-15A-2.