Northrop HAVSTOL and RALS studies

flateric

ACCESS: Above Top Secret
Staff member
Top Contributor
Senior Member
Joined
Apr 2, 2006
Messages
9,249
Reaction score
1,682
Northrop 1978 Advanced Research Configuration. Two last pics show upper munitions carriage studies.
 

Attachments

  • AC80-0459-2_a.jpg
    AC80-0459-2_a.jpg
    42.4 KB · Views: 726
  • AC80-0459-3_a.jpg
    AC80-0459-3_a.jpg
    36 KB · Views: 671
  • Nortrop 1981 Advanced Research Configuration (ARC)a.jpg
    Nortrop 1981 Advanced Research Configuration (ARC)a.jpg
    16.9 KB · Views: 673
  • Nortrop 1981 Advanced Research Configuration (ARC)b.jpg
    Nortrop 1981 Advanced Research Configuration (ARC)b.jpg
    21.1 KB · Views: 681

elmayerle

ACCESS: Top Secret
Senior Member
Joined
Jan 8, 2006
Messages
1,434
Reaction score
303
I'm not entirely certain, but I believe it was in conjunction with some studies they were conducting for the US Navy.
 

Trident

ACCESS: Top Secret
Senior Member
Joined
May 8, 2006
Messages
1,256
Reaction score
743
Wouldn't it be somewhat arkward for ground crew to arm such an aircraft? That might be another reason why it never got used in the real world.
 

hesham

ACCESS: USAP
Senior Member
Joined
May 26, 2006
Messages
28,366
Reaction score
6,022
Hi,

Northrop RALS configuration.
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19790001853_1979001853.pdf
 

Attachments

  • 1.JPG
    1.JPG
    20.9 KB · Views: 891
  • 2.JPG
    2.JPG
    47.8 KB · Views: 607

hesham

ACCESS: USAP
Senior Member
Joined
May 26, 2006
Messages
28,366
Reaction score
6,022
hesham said:
Hi,

Northrop RALS configuration.
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19790001853_1979001853.pdf

Also the Northrop RALS;
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19980201072_1998074642.pdf
 

Attachments

  • RALS.JPG
    RALS.JPG
    24.5 KB · Views: 1,417

Steve Pace

Aviation History Writer
Joined
Jan 6, 2013
Messages
2,268
Reaction score
60
Was the Northrop RALS Northrop's version of the Rockwell XFV-12A?
 

elmayerle

ACCESS: Top Secret
Senior Member
Joined
Jan 8, 2006
Messages
1,434
Reaction score
303
XB-70 Guy said:
Was the Northrop RALS Northrop's version of the Rockwell XFV-12A?
Nope, the blown wing and canard system of the XFV-12A was eariler than the RALS concept. RALS might well have worked, but the system used on the XFV-12A clearly lost something between test fiacilities and full-up configuration. I do remember people from Rockwell visiting P&W's West Palm Beach facility in 1974 (since all JTF22 (F100/F401) engineering was consolidated there) to get help on trying to improve efficiencies in the system, not that they had much success.
 

JazzTime

ACCESS: Restricted
Joined
Dec 30, 2009
Messages
14
Reaction score
0
Excuse me... In your opinion... - all these ideas are deadlock road on a way of development VSTOL?
 

elmayerle

ACCESS: Top Secret
Senior Member
Joined
Jan 8, 2006
Messages
1,434
Reaction score
303
JazzTime said:
Excuse me... In your opinion... - all these ideas are deadlock road on a way of development VSTOL?
Well, the ejector concept has shown itself rather poorly in the XV-4A (to be replaced by a battery of J85 engines in the XV-4B) and in the XFV-12A. RALS (or for those of a somewhat outre' turn, "Bleed and Burn") is Remote Augmented Lift System which ducts bleed air to a remote combustor and nozzle to generate lift at a remove from the main engine in order to increase the total vtol thrust and balance the aircraft; the problem is that it's a very "thirsty" way of doing so. In my own personal opinion, the tandem fan concept that RR came up with and which Vought looked at extensively is, despite some of the mechanical problems, one of the better alternate approaches. One could argue that the F-35's shaft-driven lift fan is a specialized adaptation of this concept. I thik either this or the 3- or 4-poster versions of the basic Harrier concept are the best approaches for combat aircraft. For larger aircraft like cargo aircraft, things get a bit more problematical and I'm not sure we've found the best solution there.
 

Stargazer2006

ACCESS: USAP
Senior Member
Joined
Jun 25, 2009
Messages
13,225
Reaction score
807
From the same report as the attachment posted by Paul:
 

Attachments

  • HAVSTOL Inboard Profile.gif
    HAVSTOL Inboard Profile.gif
    1.1 MB · Views: 166
Top