Hot and High (Actually quite low!)

VA Crew Room and general forum area.

Moderators: Guru's, The Ministry

Post Reply
adysmith
VC10
VC10
Posts: 563
Joined: 12 Jun 2013, 11:43
Location: EGNH

Hot and High (Actually quite low!)

Post by adysmith »

Currently in Africa with a DC4.

This aircraft struggles to stay up at FL100 at the best of times but these last two flights, cruising at FL90 over Africa, I noticed an OAT between 20 and 30 degrees!

I needed almost TOGA power just to maintain flying speed in the hot temperatures but surprisingly the fuel flow was about two thirds of usual amount ( down to below 500 Kg per hour)
ImageImage
Image
Old pilots never die, they just run out of runway.

User avatar
blanston12
Vintage Pair
Vintage Pair
Posts: 2717
Joined: 28 Jun 2004, 20:45
Location: San Francsico, California

Re: Hot and High (Actually quite low!)

Post by blanston12 »

Interesting, are you sure its not a mixture issue?
Joe Cusick,

Image
I am serious, and don't call me Shirley.

adysmith
VC10
VC10
Posts: 563
Joined: 12 Jun 2013, 11:43
Location: EGNH

Re: Hot and High (Actually quite low!)

Post by adysmith »

Mixture is automatic, the JBK series DC4.

Perhaps it is because the majority of flight this type does are relatively short so the additional fuel for take off/climb makes a far greater difference to average flow than a ten hour cruise??
ImageImage
Image
Old pilots never die, they just run out of runway.

Post Reply