Questions tagged [lockheed-tristar]
Lockheed's only jetliner, produced from 1968 until 1984, and the last commercial airliner it ever produced.
12 questions
11
votes
1
answer
2k
views
What is the piston/leg on the aft wall of the L-1011?
In this response to the APU location on an L-1011, in this image, there appears to be a large piston or leg extended downward along the centerline from the aft wall:
Modified: By Reedy (Own work) [CC ...
- 295
3
votes
1
answer
225
views
How is it an advantage for the L1011 to not right itself?
A friend who flew the L1011s loved them because of their stability. His joke was that you could put the plane into a banked turn , go to the bathroom, come back, and you would still be in the same ...
12
votes
2
answers
2k
views
Why did the L1011's direct lift control help make good landings?
In landing configuration the 1011 had what was called “Direct Lift Control” or DLC. That feature was actually pretty cool. Once the airplane was in landing configuration the spoilers would come up to ...
10
votes
1
answer
653
views
Did Lockheed test the TriStar in conditions similar to a century of operation?
I have no source for this claim except a motivational book. I am unable to find anything on Google regarding this.
The claim is that they ran a test on s TriStar that put it through the stresses of ...
19
votes
2
answers
3k
views
Why is the S-duct intake on the Tu-154 uniquely oblong?
Is there an advantage to the oval/elliptical shape of the Tu-154's S-duct intake? It appears to be taller and an overall different shape than the side-mounted cowlings.
This doesn't appear to be a ...
- 2,238
15
votes
1
answer
2k
views
What were the advantages of the L-1011 AoA sensor design?
The Lockheed L-1011 had an unusual type of AoA sensor. Instead of the usual vanes it used a tube with two rows of holes in it about 90° apart. A diaphragm sensed the pressure differential between the ...
- 28.7k
18
votes
5
answers
4k
views
Why was a Lockheed L-1011 chosen by Orbital ATK for its Pegasus launches?
Not sure whether this fits better here in Aviation, or would be better suited for Space, but since the question is about a terrestrial aircraft, I'll start it out here.
The topic of my question is ...
- 1,789
2
votes
0
answers
97
views
What is a possible reason for an L-1011 wing fuel tank overflow? [duplicate]
I was on a TWA Charter flight from Boston to Montego Bay Jamaica in 1989. During pushback from the gate, the right wing began to leak jetfuel (like gallons pouring out of the wing). They stopped the ...
- 21
9
votes
1
answer
598
views
Why were the TWA TriStar middle seats smaller than the aisle seats?
I was watching an old TWA advert and a question came up:
why were the L-1011 TriStar middle seats smaller than the aisle seats?
- 5,145
14
votes
2
answers
5k
views
Where is the APU in the case of an S-duct (like the L-1011)?
This question asks about the S-duct of the L-1011 Tristar. Fooot's answer shows a cut-out of the L-1011. Looking at this cut-out, I'm wondering:
If the engine is at the 'normal' location of the APU, ...
- 8,272
19
votes
4
answers
11k
views
Why is the nacelle outlet of the tail engine of the L-1011 Tristar lower than the engine itself?
I've noticed that the nacelle outlet of the Lockheed Tristar is situated below the engine itself. It is at the end of the fuselage. The nacelle outlet of the tail engine of the DC-10 on the other hand,...
- 5,739
22
votes
2
answers
4k
views
Orange object on back of jet-engine pylons, what is it?
Watching this Video of a L-1011, I noticed an orange/brown object on the back of the jet-engine pylons I never saw before.
What is it?
What's the purpose of it?
- 5,145