Loading question...
You are in free guest mode. Timed Practice Revision List Attempt History Progress Tracking Create a free account to unlock these tools
Prev Next
Practice Reading: Fill in the Blanks (Dropdown) ID: #5437 Airship 1
Instructions
In  August  2001  NASAs  Glenn  Research  Centre  began  studying  the  technologies  needed  to  build  renewable  electrical  power  systems  for  long-duration  observation  aircraft.  The    examined  power  management  and  distribution  architectures  for  a  coast-observing,  stratospheric  airship  concept.
The  inquiry    that  long-duration,  coast-observing,  stratospheric  airships  using  renewable  energy  systems  were  feasible    appropriate  technology  investments  were  made.  Although  feasible,  such  airships  were  not  without  many  development  challenges  and  airship  size  was  strongly  influenced  by  the  seasons  and  coastal  latitudes.
Wide-area  surveillance  for  months  at  a  time  is  presently  impossible  as  neither  satellites  nor  aircraft  can  provide  these  capabilities  simultaneously.  However,  renewable  energy  technology    enough  to  seriously  consider  building  aircraft  for  ultra-long  duration  flights.  In  this  arena,  airships  have  significant  potential.  Airships,  unlike  aircraft,  generate  lift  from  buoyancy  instead  of  through  aerodynamics.  Consequently,  airships  do  not  need  to  stay  in  motion  to  remain  aloft.  Therefore,  they  can  stay  over  a  specific  location  as  well  as  move  to  a  new  location.  In  addition,  airships  can  carry  large-volume,  heavy  payloads.    characteristics  make  airships  superb  candidates  for  long-endurance  surveillance  missions.

Result:

With a free account: Retry and compare every attempt.
How difficult was this question?
Others found: 100% Easy · 0% Medium · 0% Hard
Saving...