Post by bhk on Jul 23, 2007 21:48:51 GMT -5
Using information available in an article in the current (August 2007) issue of Aeroplane Monthly I have created the flight taken by P-38 "Glacier Girl" and P-51 "Miss Velma" from Chino, California to Duxford, U.K., for the Duxford Air Show, 7/8 July 2007.
For the second time in 65 years, "Glacier Girl" never made it.
She succumbed to major engine problems before leaving the USA and had to stay behind...at Presque Isle, I think it was.
"Miss Velma" went the distance, performed at Duxford and remains in the UK with her new owners.
If you are interested in this Flight, look for bolero_2.zip at both Avsim.com and Flightsim.com.
P.S.
I omitted to include some flight information in the readme, in that the P-51 carried two 75-gal fuel tanks. The P-38 did not fly with external tanks.
The settings, as described by "Glacier Girl" pilot Steve Hinton, were as follows (directly quoted from the article):-
"Both Glacier Girl and Miss Velma will have about 7hr of usable fuel on board.
In cruise, with the P-38 we will indicate about 220 m.p.h. at 10,000ft above mean sea level, while Miss Velma will probably run 30-33inHg (inches of mercury, equivalent to 15-16lb/in2) of manifold pressure and 2,100-2,200 r.p.m., which gives the Mustang a fuel burn of about 50 US gal per hour.
A stock P-51D at cruise will run about 37in of manifold pressure and 2,300 r.p.m., which consumes about 65 g.p.h. with an indicated airspeed of 260-270 m.p.h.
At 10,000ft that gives about 320 m.p.h. true airspeed.
To get the best range for a P-51 you should run 1,600 r.p.m. and adjust the manifold pressure not to exceed 33in, which will indicate 180-190 m.p.h.
When the Mustang is heavy (she will carry two 75 US gallon drop tanks) it will require higher manifold pressure but as fuel is consumed it will require a lot less pressure; 33in at 1,600 r.p.m. will consume about 45 g.p.h. while 25in of pressure and 1,600 r.p.m. will use as little as 35 g.p.h.
Our longest leg will be between Goose Bay and Frobisher Bay (Iqaluit) which is about 3.45hrs, so you can see we have built in a very good safety margin."
Phew!
Regards,
Bruce
For the second time in 65 years, "Glacier Girl" never made it.
She succumbed to major engine problems before leaving the USA and had to stay behind...at Presque Isle, I think it was.
"Miss Velma" went the distance, performed at Duxford and remains in the UK with her new owners.
If you are interested in this Flight, look for bolero_2.zip at both Avsim.com and Flightsim.com.
P.S.
I omitted to include some flight information in the readme, in that the P-51 carried two 75-gal fuel tanks. The P-38 did not fly with external tanks.
The settings, as described by "Glacier Girl" pilot Steve Hinton, were as follows (directly quoted from the article):-
"Both Glacier Girl and Miss Velma will have about 7hr of usable fuel on board.
In cruise, with the P-38 we will indicate about 220 m.p.h. at 10,000ft above mean sea level, while Miss Velma will probably run 30-33inHg (inches of mercury, equivalent to 15-16lb/in2) of manifold pressure and 2,100-2,200 r.p.m., which gives the Mustang a fuel burn of about 50 US gal per hour.
A stock P-51D at cruise will run about 37in of manifold pressure and 2,300 r.p.m., which consumes about 65 g.p.h. with an indicated airspeed of 260-270 m.p.h.
At 10,000ft that gives about 320 m.p.h. true airspeed.
To get the best range for a P-51 you should run 1,600 r.p.m. and adjust the manifold pressure not to exceed 33in, which will indicate 180-190 m.p.h.
When the Mustang is heavy (she will carry two 75 US gallon drop tanks) it will require higher manifold pressure but as fuel is consumed it will require a lot less pressure; 33in at 1,600 r.p.m. will consume about 45 g.p.h. while 25in of pressure and 1,600 r.p.m. will use as little as 35 g.p.h.
Our longest leg will be between Goose Bay and Frobisher Bay (Iqaluit) which is about 3.45hrs, so you can see we have built in a very good safety margin."
Phew!
Regards,
Bruce