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weight and performance calculations for the Lockheed L1011-200 Tristar

Lockheed L-1011 Tristar 200 | Saudi Arabian Airlines | HZ-AHR

Saudi Airlines HZ-AHR c/n 193S-1214 taking off at Schiphol airport, Oktober 1990. Saudi Airlines was a main user of the Tristar 200 variant.

Lockheed L1011-385-1-15 Tristar 200

role : wide-body airliner

importance : **

first flight : 10 April 1976 operational : May 1977 (Saudi Arabian Airlines)

country : United States of America

production : 22 -200 aircraft and 6 -200F freighter at Burbank

general information :

Longer range version with more powerful RB211-524 engines giving better hot & high

Performance. Aimed to replace the early long range jets, like the DC-8-53 and Boeing

707-320C on intercontinental routes.

primary users : British Airways, Gulf Air (8), Saudi Arabian Airlines, LTU, Delta Airlines

Accommodation:

flight crew : 3 cabin crew : 9

flight crew consist of pilot, co-pilot and flight engineer

passengers : seating for 256 in two class : 28 business class and 228 economy class seats

( 32 -in pitch) exit limit : 400 passengers, high density seating for 384 passengers

engine : 3 Rolls Royce RB211-524 turbofan engines of 213.5 [KN] (47995.9 [lbf])

Lockheed L-1011 Tristar 200 | Delta Airlines | N724DA | 3-side view scale drawing

Delta Airlines N724DA c/n 193C-1151 is an L1011-200 (L1011-385-1-15)

dimensions :

wingspan : 47.34 [m], length overall: 54.17 [m], length of fuselage : 54.17 [m] height : 16.87 [m]

wing area : 321.1 [m^2] fuselage exterior width : 5.97 [m]

weights :

empty weight : 111495 [kg]

operating empty weight : 112130 [kg] max. structural payload : 33020 [kg]

Zero Fuel weight (ZFW) : 145150 [kg] max. landing weight (MLW) : 166920 [kg]

max. take-off weight : 216363 [kg] weight fuel : 78749 [kg] (100317 [litres])

performance :

Never-exceed speed : 0.95 [Mach] (1035 [km/hr]) at 9145 [m]

critical Mach speed : 0.88 [Mach]

max. cruising speed : 982 [km/hr] (Mach 0.92 ) at 10670 [m] (33 [%] power)

economic cruising speed : 899 [km/hr] (Mach 0.84 ) at 10670 [m]

service ceiling : 12800 [m]

range with max fuel and MTOW : 9044 [km] (ATA domestic fuel reserves - 370.0 [km]

alternate)

description :

cantilever low-wing monoplane with retractable landing gear with nose wheel

Wings : primary two-spar box-type fail-safe wing structure of high-strength aluminium alloy

with Fowler-type double slotted trailing edge flaps with Kruger flaps on the LE wing root

and slotted LE flaps (slats) on outer wing ,with spoilers airfoil : Lockheed

average thickness/chord ratio : 10.0 [%], sweep angle 3/4 chord: 35.0 [°]

2 engines attached to the wings 1 in the tail, landing gear attached to the wings, fuel tanks

in the wings and in the fuselage

Fuselage : Pressurized conventional semi-monocoque fail safe structure of circular cross-

section built mainly of high-strength aluminium alloy

calculation : *1* (dimensions)

wing chord at root : 10.46 [m]

wing chord at tip : 3.12 [m]

taper ratio : 0.298 [ ]

mean wing chord : 6.78 [m]

calculated average wing chord tapered wing with rounded tips: 6.99 [m]

wing aspect ratio : 6.98 []

Oswald factor (e): 0.670 []

seize (span*length*height) : 43262 [m^3]

calculation : *2* (fuel consumption)

oil consumption : 5.8 [kg/hr]

fuel consumption (econ. cruise speed) : 7520.2 [kg/hr] (9579.9 [litre/hr]) at 31 [%] power

distance flown for 1 kg fuel : 0.12 [km/kg] at 10670 [m] height, sfc : 38.3 [kg/KN/h]

total fuel capacity : 100317 [litre] (78749 [kg])

calculation : *3* (weight)

weight engine(s) dry : 15000.0 [kg] = 23.42 [kg/KN]

weight 94.1 litre oil tank : 8.00 [kg]

oil tank filled with 4.0 litre oil : 3.6 [kg]

oil in engine 7.8 litre oil : 7.0 [kg]

fuel in engine 35.0 litre fuel : 25.62 [kg]

weight fuel lines : 189.3 [kg]

weight engine cowling : 1665.3 [kg]

weight thrust reversers : 960.8 [kg]

total weight propulsion system : 17860 [kg](8.3 [%])

***************************************************************

Accommodation cabin facilities:

Lockheed L-1011 Tristar 200 interior with laughing stewardesses

typical 2-class cabin layout for 256 passengers : economy : pitch : 81.3 [cm] 32.0 [-in]

( 2+5+2 ) seating in 29.3 rows

weight passenger seats : 1561.0 [kg]

weight cabin crew seats : 45.0 [kg]

weight flight crew seats : 63.0 [kg]

weight 2 jump seats in the cockpit :14.0 [kg]

high density seating passengers : 384 [pax] at mainly 10 -abreast seating in 43.8 rows,

pitch 79.2 [cm] 31.2 [-in]

pax density, normal seating : 0.84 [m2/pax], high density seating : 0.56 [m2/pax]

weight 7 lavatories : 202.5 [kg]

weight 3 galleys : 311.0 [kg]

Lockheed L-1011 Tristar 200 galley elevator door | Air Rum | 9L-LFB

Galley elevator Air Rum 9L-LFB. Also, there was the option for the Tristar 200 that the underfloor galley was brought to the main deck, giving a shorter passenger cabin but more underfloor luggage/cargo space.

weight elevator galley : 145 [kg]

weight overhead stowage for hand luggage : 89.6 [kg]

weight 3 wardrobe closets : 25.6 [kg]

weight 3 movie screens : 63.7 [kg]

weight 61 windows (47x38cm) : 54.6 [kg]

weight 6 (1.93 x 1.07 [m]) Type A main entry doors : 364.6 [kg]

weight 3 (main door size : 1.75 x 1.78 [m]) freight doors (belly) : 259.0 [kg]*

total belly baggage/cargo hold volume : 110.4 [m3]

underfloor belly hold can accommodate : 16 LD3 containers

and : 19.8 [m3] bulk cargo

cabin volume (usable), excluding flight deck : 452 [m3]

passenger compartment volume : 295 [m3]

passenger cabin max width : 5.77 [m] cabin length : 41.44 [m] max cabin height : 2.41 [m]

floor area : 215.4 [m2]

weight cabin facilities : 3198.6 [kg]

safety facilities:

weight 2 type I emergency exits (0.61 x 1.52 [m]): 54.6 [kg]

evacuation time with 384 passengers : 54 [sec]

Lockheed L1011 cross-section scale drwaing with underfloor galley and upward sliding main entry doors

Top : The galley of the Tristar with the refrigeration and oven units on the lower level connected by a lift to the passenger level. Bottom : The main doors of the Tristar pull in and slide upwards.

weight 12 hand fire extinguisher : 36 [kg]

weight cockpit voice recorder (CVR) and flight data recorder (FDR): 20.0 [kg]

weight oxygen masks & oxygen generators : 166.4 [kg]

weight emergency flare installation : 10 [kg]

weight 6 emergency evacuation slides : 347.3 [kg]

weight safety equipment & facilities : 635 [kg]

fuselage construction:

fuselage aluminium frame : 20628 [kg]

floor loading (payload/m2): 153 [kg/m2]

weight rear pressure bulkhead : 445.3 [kg]

fuselage covering ( 806.3 [m2] duraluminium 2.86 [mm]) : 6150.2 [kg]

weight floor beams : 5230.7 [kg]

weight cabin furbishing : 3239.7 [kg]

weight cabin floor : 3046.5 [kg]

weight (sound proof) isolation : 648.3 [kg] TO-noise level : 98.0 [EPNdB]

weight 10178 [litre] main central fuel tanks empty : 570.0 [kg]

weight empty 260 [litre] potable water tank : 23.0 [kg]

weight empty waste tank : 27.2 [kg]

weight engine mount in tail : 107 [kg]

weight fuselage structure : 40115.6 [kg]

Avionics:

weight VHF radio and Selcal : 9.0 [kg]

weight flight and service attendants intercom : 5.0 [kg]

weight dual cloud-collision radar : 25.0 [kg]

weight monochromatic weather X-band (3.2cm wavelength) radar system : 25.0 [kg]

Onboard A Lockheed L-1011 TriStar In Cotonou, Benin - Live and Let's Fly | 9L-LFB | Air Rum | cockpit

Cockpit of Air Rum 9L-LFB c/n 193P-1156. The aircraft ended up at the beach of Cotonou, Benin and can be visited there. Location : 6°20’51.30”N 2°22’47.15”E

weight VOR/ILS,RMI,DME,radio altimeter, ASI, time clock : 20.0 [kg]

weight Avionic Flight Control System : 33.0 [kg]

weight CAT IIIA auto-landing system : 10.0 [kg]

weight artificial horizons, compass, alti-meters : 7 [kg]

weight ground proximity warning system (GPWS) : 6 [kg]

The engineer's station inside the L1011 flight deck - Photo: Jerome de Vries | 9L-LFB | Air Rum | engineer's station

Air Rum L1011-200 9L-LFB Engineer’s station

weight engine monitoring gauges & control switches : 21 [kg]

weight reserve ADI, ASI, alti-meter, compass, engine temp. and rpm indicators : 15 [kg]

weight DLC (spoiler) control: 95 [kg]

weight avionics : 246.0 [kg]

Systems:

Air-conditioning and pressurization system maintains sea level conditions up to 6400 [m]

and gives equivalent of 2440 [m] at 12200 [m]. pressure differential : 0.58 [bar] (kg/cm2)

pressurized fuselage volume : 624 [m3] cabin air refreshment time : 3.1 [min]

weight air-conditioning and pressurization system : 341 [kg]

weight APU / engine starter: 106.8 [kg]

weight lighting : 84.5 [kg]

weight four independent 207 bar hydraulic systems : 182.9 [kg]

weight three engine-driven 90kVA 400 Hertz electricity generators : 64.0 [kg]

weight integrated drive generator (IDG) : 25 [kg]

weight three 24V 25Ah nickel-cadmium batteries : 35.6 [kg]

weight controls : 22.4 [kg]

weight systems : 862.3 [kg]

total weight fuselage : 45057 [kg](20.8 [%])

***************************************************************

total weight aluminium ribs (1453 ribs) : 6882 [kg]

weight engine mounts : 214 [kg]

weight 6 wing fuel tanks empty for total 90139 [litre] fuel : 5048 [kg]

weight wing covering (painted aluminium 3.91 [mm]) : 6788 [kg]

total weight aluminium spars (multi-cellular wing structure) : 8929 [kg]

weight wings : 22599 [kg]

weight wing/square meter : 70.38 [kg]

weight thermal leading-edge anti-icing : 52.1 [kg]

weight high & low speed ailerons (14.86 [m2]) : 524.2 [kg]

weight fin (51.10 [m2]) : 1802.2 [kg]

weight rudder (11.89 [m2]) : 402.4 [kg]

weight variable-incidence tailplane (flying stabilizer) (94.85 [m2]): 3753.0 [kg]

weight elevators (24.19 [m2]): 460.59 [kg]

weight flight control hydraulic servo actuators: 72.1 [kg]

Lockheed L1011 trailing-edge flaps and leading-edge Kruger flaps cross-section scale drawing, retracted and deployed 1.Trailing-edge flaps in the cruise position 2. Deployed for landing 3. The leading-edge Kruger flaps retracted 4. Deployed – the flaps extend from the pylons to the wing root

Lockheed L1011 Tristar trailing-edge flaps , ailerons and spoilers drawing, and leading-edge slats cross-section 5. the leading-edge slat which extends from the pylon to the tip; 6. The slat rolls out on tracks to deploy. 7. Outboard aileron 8.flight spoilers 9.inboard aileron 10. Ground spoilers 11. Ball screw jacks 12. Flap tracks and fairings 13. Torque rod to leading edge flaps 14. Asymmetric sense and control unit 15. Torque rod to slats 16. Leading-edge Kruger flap drive motor and gearbox 17. Leading-edge slat drive motor and gearbox

weight trailing-edge double slotted flaps (49.80 [m2]) : 1492.5 [kg]

weight leading edge Kruger flaps and slats (33.45 [m2]) : 697.0 [kg]

weight spoilers (19.9 [m2]) : 342.6 [kg]

total weight wing construction : 37415 [kg] (33.4 [%])

*******************************************************************

tire pressure main wheels : 12.41 [Bar] (nitrogen), ply rating : 23 PR

tire speed limit : 389 [km/hr]

total tyre footprint : 1.11 [m2]

Runway LCN at MTOW (0.76m radius of rigidity) : 50 [ ]

Aircraft Classification Number (ACN), MTOW on rigid runway and medium

subgrade strength (B) : 71 [ ]

Can only operate from paved runways subgrade A

wheel pressure : 23799.9 [kg]

weight 8 Dunlop main wheels (1270 [mm] by 508 [mm]) : 1416.7 [kg]

weight 2 nose wheels : 177.1 [kg]

weight hydraulic disc wheel-brakes : 145.2 [kg]

weight Duplex anti-skid units : 9.0 [kg]

weight oleo-pneumatic shock absorbers : 193.5 [kg]

weight wheel hydraulic operated retraction system : 1991.5 [kg]

weight undercarriage struts (four-wheel bogies) with axle 5925.0 [kg]

total weight landing gear : 9858.0 [kg] (4.6 [%]

*******************************************************************

Lockheed L-1011 Tristar 200 | Gulf Air | Gulf Air used several Tristar 200’s

********************************************************************

calculated empty weight : 110131 [kg](50.9 [%])

weight oil for 11.1 hours flying : 72.4 [kg]

weight lifejackets : 115.2 [kg]

weight 5 life rafts : 160.0 [kg]

weight catering : 288.0 [kg]

weight water : 230.4 [kg]

weight crew : 972 [kg]

weight crew luggage, nav. chards, flight doc., miscell. items : 161 [kg]

operational weight empty : 112130 [kg] (51.8 [%])

********************************************************************

weight 256 passengers : 19712 [kg]

weight luggage : 4096 [kg]

weight cargo : 9212 [kg] (cargo + luggage/m3 belly : 111 [kg/m3])

zero fuel weight (ZFW): 145150 [kg](67.1 [%])

weight fuel for landing (2.9 hours flying) : 21770 [kg]

max. landing weight (MLW): 166920 [kg](77.1 [%])

max. fuel weight : 190879 [kg] (88.2 [%])

payload with max fuel : 274 passengers + luggage 25484 [kg]

published maximum take-off weight : 216363 [kg] (100.0 [%])

calculation : * 4 * (engine power)

power loading (Take-off) : 338 [kg/KN]

power loading (Take-off) 1 PUF: 507 [kg/KN]

max. total take-off power : 640.5 [KN]

calculation : *5* (loads)

manoeuvre load : 1.6 [g] at 9000 [m]

limit load : 2.5 [g] ultimate load : 3.8 [g] load factor : 1.1 [g]

design flight time : 2.25 [hours]

design cycles : 14650 sorties, design hours : 32962 [hours]

max. wing loading (MTOW & flaps retracted) : 674 [kg/m2]

wing stress (2 g) during operation : 166 [N/kg] at 2g emergency manoeuvre

calculation : *6* (angles of attack)

angle of attack zero lift : -2.06 ["]

max. angle of attack (stalling angle, clean) : 15.39 ["]

max. angle of attack (full flaps) : 19.49 ["]

angle of attack at max. speed : 1.68 ["]

calculation : *7* (lift & drag ratios

lift coefficient at angle of attack 0° : 0.17 [ ]

lift coefficient at max. speed : 0.31 [ ]

lift coefficient at max. angle of attack (clean): 1.44 [ ]

max. lift coefficient full flaps : 2.19 [ ]

drag coefficient at max. speed : 0.0523 [ ]

D-AERN Lockheed L.1011 Tristar 200 LTU Lufttransport Unter… | Flickr

LTU Tristar 200 D-AERN c/n 193A-1158

drag coefficient at econ. cruise speed : 0.0516 [ ]

induced drag coefficient at econ. cruise speed : 0.0142 [ ]

drag coefficient (zero lift) : 0.0374 [ ]

lift/drag ratio at econ. speed : 5.91 [ ]

calculation : *8* (speeds

take-off decision speed (V1) : 265 [km/u] (143 [kt])

lift-off speed (VLOF) : 291 [km/u] (157 [kt])

take-off safety speed (V2) : 307 [km/u] (166 [kt])

steady initial climb speed (V4) : 333 [km/u] (180 [kt])

flap retraction speed (V3) at 500m (OW loaded : 208843 [kg]): 329 [km/u] (178 [kt])

climb speed (to FL150 with 60 [%] power) : 511 [km/hr] (276 [kt])

max. endurance speed (Vbe): 692 [km/u] min. fuel/hr : 6716 [kg/hr] at height : 10363 [m]

max. range speed (Vbr): 918 [km/u] (0.87 [mach]) min. fuel consumption : 8.07 [kg/km] at cruise height : 11278 [m]

max. cruising speed : 982 [km/hr] (530 [kt]) at 10670 [m] (power:38 [%])

max. operational speed (Mmo) : 1035 [km/hr] (Mach 0.95 ) at 9145 [m] (power:49 [%])

airflow at cruise speed per engine : 389.9 [kg/s]

speed of thrust jet : 1723 [km/hr]

initial descent speed 10000 - 7315 [m]: Mach 0.72

descent speed 7315 - 3048 [m]: 519 [km/u] (280 [kt])

approach speed 3048 - 500 [m] (clean): 389 [km/u] (210 [kt])

minimum control speed (MCS) Vmca (clean): 322 [km/u] (174 [kt])

stalling speed clean at 500 [m] height at Max.Landing Weight : 166920 [kg]): 280 [km/u]

(151 [kt])

final approach speed (landing speed) at sea-level with full flaps VREF (max. landing weight):

263 [km/u] (142 [kt])

ICAO Aircraft Approach Category (APC) : D

stalling speed at sea-level with full flaps VSO (max. landing weight): 202 [km/u]

rate of climb at sea-level ROC (loaded, 60 % power) : 795 [m/min]

rate of climb at sea-level ROC (loaded, 75% power) : 1250 [m/min]

rate of climb at 1000 [m] with 1 engine out (PUF/MTOW, 100 % power on remaining

engines) : 1960 [m/min]

Lockheed L-1011 Tristar 200 | British Airways | G-BHBN

L1011-200 British Airways G-BHBN at Faro, Portugal in 1990

rate of descent from FL240 to FL100 (7315m > 3048m): 1067 [m/min] (3501 [ft/min])

rate of descent during approach with landing gear extended, with use of spoilers:

457 [m/min] (1499 [ft/min])

calculation : *9* (regarding various performances)

high wheel pressure, can only take off from paved runways

take-off distance at sea-level concrete runway : 2044 [m]

ICAO Aerodrome Reference Code : 4D

take-off distance at sea-level over 15 [m] height : 2205 [m]

FAR TO runway length requirement at MTOW, standard day at SL (ASDA): 2572 [m]

N75AA 1 Lockheed L1011 Tristar 200 Tradewinds Airlines MAN… | Flickr

Tradewinds airlines Tristar 200 N75AA c/n 193U-1201 touching down.

landing run (MLW) : 881 [m]

landing distance (C.A.R.) from 15 [m] at SL, dry runway : 1849 [m]

landing distance (C.A.R.) from 15 [m] at SL, wet runway : 2149 [m]

FAR landing runway length requirements at SL : 1761 [m]

max. lift/drag ratio : 9.91 [ ]

climb to 5000 [m] with max payload : 5.82 [min]

climb to 10000 [m] with max payload : 17.92 [min]

descent time from 10000 [m] to 250 [m] : 24.33 [min]

ceiling limited by max. pressure differential 14125 [m]

theoretical ceiling fully loaded (mtow- 60 min.fuel: 208843 [kg] ) : 16700 [m]

calculation *10* (action radius & endurance)

range with max. payload: 8414 [km] with 33020.0 [kg] max. useful load (90.4 [%] fuel)*

range with high density pax: 8057 [km] with 384 passengers (87.0 [%] fuel)*

range with typical two-class pax: 9463 [km] with 256 passengers (100.0 [%] fuel)*

range with max.fuel : 9414 [km] with 12 crew and 274 passengers and 100.0 [%] fuel*

ferry range : 10197 [km] with 3 crew and zero payload (100.0 [%] fuel)*

max range theoretically with additional fuel tanks total 134370 [litre] fuel : 13135 [km]*

* calculated ranges without fuel reserves

Available Seat Kilometres (ASK) : 2821156 [paskm]

useful load with range 1000km : 33020 [kg]

useful load with range 1000km : 384 passengers

production (theor.max load): 32426 [tonkm/hour]

production (useful load): 32426 [tonkm/hour]

production (passengers): 306578 [paskm/hour]

oil and fuel consumption per tonkm : 0.232 [kg]

calculation *11* (operating cost)

fuel cost per hour (9580 [litre]):5747 [eur] (32 [pax-km/litre fuel])

fuel cost per seat 1000km flight (312 [pax] 2-class seating): 18.75 [eur/1000PK]

oil cost per hour: 24 [eur]

crew cost per hour : 1650 [eur]

list price 2023 : 292 [mln USD]

average flying hours in 1 year : 2460 [hours] technical life : 13 [year]

real average service life : 15 [years]

depreciation - 16 [years] to 10% residual value

L-1011-200 Tristar Airliner Eastern Express 144106 | N305EA

Eastern Airlines L-1011-200 N305EA, reg. N305EA was for a Eastern Airlines L-1011-1…c/n 193A-1006. Mismatch between airplane type Tristar 200 and registration.

economic hours (expected total flying hours) : 39360 [hours]

financing interest per flying hour : 2669 [EUR]

write off per flying hour : 4512 [EUR]

time between engine failure : 17173 [hr]

can continue fly on 2 engines, low risk for emergency landing for PUF

workhours per day : 8.99 [hr]

average flight hours till crash : 0.41 [mln hr] (165 service years)

safe flight hours till fatality : 2679 [hr] (1.1 service years)

reservation pax liability/flying hour : 48.08 [SDR*] (60.10 [eur])

insurance cost per hour : 3311 [eur] insurance rate : 7.5 [%]

engine maintenance cost per hour : 739.0 [eur]

wing maintenance cost per hour : 314.0 [eur]

fuselage maintenance cost per hour : 318.52 [eur]

tire life (time till worn out) : 101 [cycles]

maintenance cost per hour (excluding engines): 4051 [eur]

direct operating cost per hour: 22765 [eur], DOC per km : 25.32 [eur]

DOC per seat 1000km flight (312 [pax] 2-class seating): 74.25 [eur/1000PK]

DOC per seat 1000km flight (high density seating): 60.32 [eur/1000PK]

DOC per kg cargo for a 1000km flight : 0.70 [eur/kg] (= DOC/tonkm)

passenger service charge (depart at Schiphol): 11.34 [eur]

security service charge (depart at Schiphol): 10.08 [eur]

airport take-off fee / passenger : 4.14 [eur/pax]

airport landing fee / passenger : 4.14 [eur/pax]

retour ticket price 1000km trip : 228.69 [eur/pax]

price retour ticket Schiphol-Barcelona : 269.53 [eur/pax]

Lockheed L-1011 Tristar 200 | Air Rum | 9L-LFB

Air Rum L1011-200 9L-LFB

accidents with fatalities > see the accident file

Literature :

Lockheed L-1011 TriStar - Wikipedia

Advanced jetliners page 4

Jane’s all the world aircraft 1979-80 page 374

Air International apr’94 page 204

Air International apr’90 page 186

Luchtvaart sep’93 page 306

Lockheed L-1011 TriStar Production list | Airfleets aviation

confidence rating regarding source data : medium - all information is only available from news, social media or unofficial sources

DISCLAIMER Above calculations are based on published data, they must be

regarded as indication not as facts.

Calculated performance and weight may not correspond with actual weights

and performances and are assumptions for which no responsibility can be taken.

Calculations are as accurate as possible, they can be fine-tuned when more data

is available, you are welcome to give suggestions and additional information

so we can improve our program. For copyright on drawings/photographs/

content please mail to below mail address

(c) B van der Zalm 18 November 2023 contact : info.aircraftinvestigation@gmail.com ac jetpax 2020.py python 3.7.4