Thursday, March 2, 2017

A-1E Yankee Escape System

The US Air Force installed Stanley's Yankee escape system in its A-1E Skyraiders as well as its single-seat ones. The Navy incorporated it in single-seat Skyraiders in at least two attack squadrons late in their fleet service but not in any of their wide-body A-1s.

From a Stanley Aviation Brochure:



From Ed Barthelmes excellent A-1 Skyraider Walkaround*:

* If you don't have it, you should buy it:

Sunday, January 15, 2017

C-130 Dihedral

In response to a discussion about C-130 wing dihedral:

The outboard wing panel had 2.5 degrees of dihedral, probably measured at the trailing edge.

 Note that this drawing is from a Lockheed C-130 (no revision letter) so it shows an outboard location for the external fuel tank.

As a result, the wing was not flat across the top as shown by the red line in the front view above and by comparison of the airfoils on the side view here, at least statically when there was no fuel load:

Some say that when the airplane was fueled (all of it was in the wing, most in the outboard wing panels) that the wing was flat across the top.

Sunday, January 8, 2017

F4H Aft Fuselage Cross Sections

The shape of the aft part of the engine nacelle of the excellent 1/48th Zoukei-Mura F-4J Phantom has been questioned. For what it's worth to the discussion, this is a depiction of the cross sections from pretty good drawings produced by McAir. Note that it depicts the Blue Angels F-4J, almost all of which had the F-4B J79-8 engines installed. However, the nacelle shape of the F-4B/N/J/S forward of FS 493, i.e. the unpainted "finger plate" surrounding the afterburner nozzle was the same.

For a description of the difference between the F-4B/N and F-4J/S afterburner nozzles and their respective "finger plates", see http://tailspintopics.blogspot.com/2012/12/j79-exhaust-nozzles.html