• Hi Guest! Forum rules have been updated. All users please read here.

Grumman G-xxx turboprop Albatross

boxkite

ACCESS: Top Secret
Senior Member
Joined
Jul 12, 2006
Messages
845
Reaction score
147
I’m looking for the Grumman design number of this ”Albatross“ turboprop conversion. I only know it’s NOT the G-305 (another proposed four-engined turboprop flying-boat for ASW duties from 1961). Any idea of the G-xxx number?

SOURCE: “Der Flieger“ 11/1968
 

Attachments

  • turboprop Albatross.JPG
    turboprop Albatross.JPG
    74.3 KB · Views: 1,283

TinWing

ACCESS: Top Secret
Senior Member
Joined
Jan 3, 2006
Messages
887
Reaction score
56
boxkite said:
I’m looking for the Grumman design number of this ”Albatross“ turboprop conversion. I only know it’s NOT the G-305 (another proposed four-engined turboprop flying-boat for ASW duties from 1961). Any idea of the G-xxx number?

SOURCE: “Der Flieger“ 11/1968

Four engines?

It doesn't surprise me, because four 750hp PT6 category turboprops were cheaper and lighter than a pair of Darts or T55s.

I do wonder what engines were being considered?
 

hesham

ACCESS: USAP
Senior Member
Joined
May 26, 2006
Messages
27,019
Reaction score
3,715
Dear boxkite,

I don't know that design now,and I will research about it for you,but
the ASW design was G-251.
 

boxkite

ACCESS: Top Secret
Senior Member
Joined
Jul 12, 2006
Messages
845
Reaction score
147
For comparison, this is the mentioned G-305 from René Francillon’s “Grumman Aircraft since 1929” (Putnam), powered by four GE T64-GE-4.

Hesham, I only know of the existence of a projected G-215 (Nov 1959). Please, more detailed information on the G-251.
 

Attachments

  • Grumman G-305.JPG
    Grumman G-305.JPG
    54.9 KB · Views: 1,082

hesham

ACCESS: USAP
Senior Member
Joined
May 26, 2006
Messages
27,019
Reaction score
3,715
My dear boxkite,

I will search about it to you,there are some Albatross designs:

G-191 Albatross for Germany.
G-231 ,, (CSR-110) for Canada.
G-234 ,, for USCG (UF-2G) and Argentina.
G-262 ,, for Japan.
 

hesham

ACCESS: USAP
Senior Member
Joined
May 26, 2006
Messages
27,019
Reaction score
3,715
Dear boxkite,

The Grumman G-251 was a version of G-231, which also entered service
with USCG,but I have not any picture,the only I find was for G-231,which
called G-111-2
 

Attachments

  • GrummanG111-2.jpg
    GrummanG111-2.jpg
    9.8 KB · Views: 981

hesham

ACCESS: USAP
Senior Member
Joined
May 26, 2006
Messages
27,019
Reaction score
3,715
Dear boxkite,

the G-231 was also used as ASW aircraft for USCG and its variants
were G-234,G-270 and G-288, but I have no details.
 

hesham

ACCESS: USAP
Senior Member
Joined
May 26, 2006
Messages
27,019
Reaction score
3,715
boxkite said:
For comparison, this is the mentioned G-305 from René Francillon’s “Grumman Aircraft since 1929” (Putnam), powered by four GE T64-GE-4.

Hesham, I only know of the existence of a projected G-215 (Nov 1959). Please, more detailed information on the G-251.

The info about G-305.
 

Attachments

  • G-305.png
    G-305.png
    171.2 KB · Views: 678

Apophenia

ACCESS: Top Secret
Senior Member
Joined
Jul 25, 2007
Messages
2,635
Reaction score
952
Could that Der Flieger image represent the unbuilt Frakes proposal to refit the Albatross with four 1,000 shp PT6As?

American Flying Boats and Amphibious Aircraft (pg 243) also mentions a proposal to re-engine the Albatross with four 1,100 shp Garrett TPE331s but doesn't name the company involved.
 

iverson

ACCESS: Secret
Joined
Sep 24, 2009
Messages
360
Reaction score
156
TinWing said:
boxkite said:
I’m looking for the Grumman design number of this ”Albatross“ turboprop conversion. I only know it’s NOT the G-305 (another proposed four-engined turboprop flying-boat for ASW duties from 1961). Any idea of the G-xxx number?

SOURCE: “Der Flieger“ 11/1968

Four engines?

It doesn't surprise me, because four 750hp PT6 category turboprops were cheaper and lighter than a pair of Darts or T55s.

I do wonder what engines were being considered?

Could this have been a planned development aircraft for the Shin-Meiwa US-1/PS-1? I seem to remember that they used a Grumman Albatros to test hull designs.
 

riggerrob

I really should change my personal text
Senior Member
Joined
Mar 11, 2012
Messages
1,190
Reaction score
589
Apophenia said:
Could that Der Flieger image represent the unbuilt Frakes proposal to refit the Albatross with four 1,000 shp PT6As?

American Flying Boats and Amphibious Aircraft (pg 243) also mentions a proposal to re-engine the Albatross with four 1,100 shp Garrett TPE331s but doesn't name the company involved.

Also avoid confusing Turbo-Albatross with the 5 Turbo-Mallards that Chalks Airlines flew out of Fort Laudrdale, Florida for many years. Chalks' Turbo-Mallard conversions only sported a pair of PT-6A engines. Sadly, Chalks' fleet of Mallards was grounded after a crash that was blamed on wing spars. Wing spars were fracked by metal fatigue or corrosion or a combination of the two.

Only a related note: did any military users hang Westinghouse J34 booster jets under their Albatross (similar to booster engines on P2 and C123)?
 

Apophenia

ACCESS: Top Secret
Senior Member
Joined
Jul 25, 2007
Messages
2,635
Reaction score
952
Yes, the 12 Grumman-Frakes G73T Turbo Mallard conversions predate Frakes' turbine Albatross proposal.

Flight mentions Chalk's desire for an Albatross turboprop conversion in Oct 1983. Airliners.net gives a date of 1986 for Frakes International's re-engined Albatrosses. Airliners.net repeats online mentions of unnumbered PT6As or "PW-120" turboprops. Can anyone confirm that PW120 proposal?

https://www.flightglobal.com/FlightPDFArchive/1983/1983%20-%201832.PDF
http://www.airliners.net/aircraft-data/grumman-g-64111-albatross/233
 

GTX

All hail the God of Frustration!!!
Senior Member
Joined
Apr 15, 2006
Messages
3,036
Reaction score
553
Website
beyondthesprues.com
New version being offered - see attached.
 

Attachments

  • AIBI36NB_Albatross Technical Brief.pdf
    780.2 KB · Views: 80
Top