Bristol Scout C
role : fighter
first flight : Scout A : februar 1914 operational : Februar 1915
country : United-Kingdom
design : F.S.Barnwell
production : Scout A : 1 Scout B : 2 Scout C 161 aircraft
general information : For it’s time the Scout A was a modern and streamlined aircraft. On 23 Februar 1914 Harry Busteed flew at 153 km/hr. At the Olympia Aro Show in March 1914 it was the centre of interest. At that moment it still carried the name of Baby Biplane. After the show a wing was fitted with 7.49m span and with this it reached 157 km/hr. The aircraft was sold for 400 pound sterling to lord Carbery. It was redesignated as Scout A. Carbery replaced the 80 HP Gnome by a 80 HP Le Rhone engine and with this he reached 161 km/u.
Carbery participated in July 1914 in the London – Paris airrace but ended in the Chanal and the plane could not be recovered from the sea. In the mean time work had started to built 2 Scout B’s. These differed little from the Scout A. At the start of WWI these had not yet flown. They were confiscated by the war office and consigned to 3rd and 5th RFC Squadron and given registration nrs. 633 en 648. Experiments were carried out with oblique firing carabines. A German airplane was intercepted and hit by bullets but it was not shot down (olr1054). The Scout B performed well and in november 1914 additional orders were placed, these were indicated as Scout C and first delivered Februar 1915.
The Scout C was nice to fly and higly manoeuvrable it only lacked proper armament. Soon pilots took with hem pistols or carabines and on some Scout’s a machinegun was fixed that could shoot oblique past the propellor disc.
Dispite this difficult way of shooting there were some pilots who managed to shoot down an enemy plane. The well-known pilot Lanoe Hawker shot down 3 German armed 2-seat Albatros aircraft. Hij used the unarmed BE’s as bate.
Some RNAS Scouts carried Ranken darts for anti-zeppelin missions or four small
bombs under the fuselage.
The cockpit was very small and a man of normal posture just fitted in.
users : RFC (87). RNAS (74)
crew : 1
armament : 1 fixed 7.70 [mm] (0.303 in) Lewis machine-gun firing oblique forward at 45°
engine : 1 Gnome 7A Monosoupape air-cooled 7 -cylinder Monosoupape rotary engine 80 [hp](58.8 KW)
dimensions :
wingspan : 7.49 [m], length : 6.3 [m], height : 2.59[m]
wing area : 18.39 [m^2]
weights :
max.take-off weight : 544 [kg]
empty weight operational : 345 [kg] bombload : 20 [kg]
performance :
maximum speed : 149 [km/hr] at sea-level
climbing speed : 330 [m/min]
service ceiling : 4724 [m]
endurance : 2.5 [hours]
estimated action radius : 168 [km]
description :
1-bay biplane with fixed landing gear and tail strut
wingtype : 21 two spar upper and lower wing
engines, landing gear, fuel and bombs in or attached to the fuselage
airscrew :
fixed pitch 2 -bladed tractor airscrew with max. efficiency :0.66 [ ]
estimated diameter airscrew 2.37 [m]
angle of attack prop : 20.34 [ ]
reduction : 1.00 [ ]
airscrew revs : 1200 [r.p.m.]
pitch at Max speed 2.07 [m]
blade-tip speed at Vmax and max revs. : 155 [m/s]
calculation : *1* (dimensions)
mean wing chord : 1.23 [m]
calculated wing chord (rounded tips): 1.41 [m]
wing aspect ratio : 6.10 []
estimated gap : 1.29 [m]
gap/chord : 1.05 [ ]
seize (span*length*height) : 122 [m^3]
calculation : *2* (fuel consumption)
oil consumption : 6.5 [kg/hr]
fuel consumption(cruise speed) : 16.0 [kg/hr] (21.8 [litre/hr]) at 64 [%] power
distance flown for 1 kg fuel : 8.38 [km/kg]
estimated total fuel capacity : 62 [litre] (45 [kg])
calculation : *3* (weight)
weight engine(s) dry : 109.4 [kg] = 1.86 [kg/KW]
weight 23 litre oil tank : 2.0 [kg]
oil tank filled with 0.4 litre oil : 0.4 [kg]
oil in engine 0 litre oil : 0.3 [kg]
fuel in engine 0 litre fuel : 0.3 [kg]
weight 9 litre gravity patrol tank(s) : 1.4 [kg]
weight cowling 2.4 [kg]
weight airscrew(s) (wood) incl. boss & bolts : 13.5 [kg]
total weight propulsion system : 128 [kg](23.5 [%])
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fuselage skeleton (wood gauge : 5.32 [cm]): 46 [kg]
bracing : 2.0 [kg]
fuselage covering ( 7.5 [m2] doped linen fabric) : 2.4 [kg]
weight controls + indicators: 5.2 [kg]
weight seats : 3.0 [kg]
weight other details, lighting set, etc. : 5.1 [kg]
weight bomb storage : 1.4 [kg]
weight 53 [litre] main fuel tank empty : 4.2 [kg]
weight engine mounts & firewalls : 3 [kg]
total weight fuselage : 72 [kg](13.2 [%])
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weight wing covering (doped linen fabric) : 12 [kg]
total weight ribs (36 ribs) : 32 [kg]
load on front upper spar (clmax) per running metre : 744.4 [N]
load on rear upper spar (vmax) per running metre : 208.6 [N]
total weight 8 spars : 24 [kg]
weight wings : 68 [kg]
weight wing/square meter : 3.70 [kg]
weight 4 interplane struts & cabane : 6.2 [kg]
weight cables (38 [m]) : 1.4 [kg] (= 38 [gram] per metre)
Francis Donald Holden Bremner in Thasos in 1916 with one of the seven Bristol Scout Type C biplane he flew.
diameter cable : 2.5 [mm]
weight fin & rudder (0.7 [m2]) : 2.5 [kg]
weight stabilizer & elevator (2.1 [m2]): 7.8 [kg]
total weight wing surfaces & bracing : 86 [kg] (15.8 [%])
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weight machine-gun(s) : 12.7 [kg]
weight fixed mounting mg :2.0 [kg]
weight armament : 15 [kg]
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wheel pressure : 272.0 [kg]
weight 2 wheels (710 [mm] by 79 [mm]) : 14.2 [kg]
weight tailskid : 1.7 [kg]
weight undercarriage with axle 14.9 [kg]
total weight landing gear : 30.7 [kg] (5.6 [%]
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calculated empty weight : 331 [kg](60.9 [%])
weight oil for 3.0 hours flying : 19.4 [kg]
weight 5 drums empty : 1.0 [kg]
weight ammunition (235 rounds) : 9.0 [kg]
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calculated operational weight empty : 360 [kg] (66.1 [%])
published operational weight empty : 345 [kg] (63.4 [%])
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weight crew : 81 [kg]
weight fuel for 1.5 hours flying : 24 [kg]
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operational weight : 465 [kg](85.4 [%])
bomb load : 20 [kg]
operational weight bombing mission : 485 [kg]
fuel reserve : 21 [kg] enough for 1.34 [hours] flying
possible additional useful load : 38 [kg]
operational weight fully loaded : 544 [kg] with fuel tank filled for 100 [%]
published maximum take-off weight : 544 [kg] (100.0 [%])
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calculation : * 4 * (engine power)
power loading (operational without bombload) : 7.89 [kg/kW]
total power : 58.8 [kW] at 1200 [r.p.m]
calculation : *5* (loads)
manoeuvre load : 2.7 [g] at 1000 [m]
limit load : 4.5 [g] ultimate load : 6.8 [g] loadfactor : 2.7 [g]
design flight time : 2.00 [hours]
design cycles : 425 sorties, design hours : 850 [hours]
operational wing loading : 248 [N/m^2]
wing stress (3 g) during operation : 201 [N/kg] at 3g emergency manoeuvre
calculation : *6* (angles of attack)
angle of attack zero lift : -1.26 ["]
max.angle of attack (stalling angle) : 13.00 ["]
angle of attack at max.speed : 1.74 ["]
calculation : *7* (lift & drag ratios
lift coefficient at angle of attack 0° :0.10 [ ]
lift coefficient at max. angle of attack : 1.13 [ ]
lift coefficient at max.speed : 0.24 [ ]
induced drag coefficient at max.speed : 0.0053 [ ]
drag coefficient at max.speed : 0.0484 [ ]
drag coefficient (zero lift) : 0.0431 [ ]
calculation : *8* (speeds
stalling speed at sea-level (OW): 68 [km/u]
landing speed at sea-level (OW without bombload): 82 [km/hr]
min.drag speed (max endurance) : 99 [km/hr] at 2362 [m](power :45 [%])
min. power speed (max range) : 107 [km/hr] at 2362 [m] (power:48 [%])
max.rate of climb speed : 92.4 [km/hr] at sea-level
cruising speed : 134 [km/hr] op 2362 [m] (power:66 [%])
design speed prop : 145 [km/hr]
maximum speed : 149 [km/hr] op 100 [m] (power:99 [%])
climbing speed at sea-level (without bombload) : 249 [m/min]
calculation : *9* (regarding various performances)
take-off distance at sea-level : 181 [m]
lift/drag ratio : 7.91 [ ]
max. practical ceiling : 4525 [m] with flying weight :440 [kg]
practical ceiling (operational weight): 4200 [m] with flying weight :465 [kg]
practical ceiling fully loaded (mtow- 1 hour fuel) : 3425 [m] with flying weight :528 [kg]
published ceiling (4724 [m]
climb to 1500m (without bombload) : 6.86 [min]
climb to 3000m (without bombload) : 17.82 [min]
max.dive speed : 318.5 [km/hr] at 2425 [m] height
load factor at max.angle turn 1.87 ["g"]
turn radius at 500m: 45 [m]
time needed for 360* turn 10.8 [seconds] at 500m
calculation *10* (action radius & endurance)
operational endurance : 2.84 [hours] with 1 crew and 58 [kg] useful (bomb)load and 100.0 [%] fuel
published endurance : 2.50 [hours] with 1 crew and possible useful (bomb) load : 63 [kg] and 88.1 [%] fuel
action radius : 350 [km] with 1 crew and 20[kg] photo camera/radio transmitter or bombload
max range theoretically with additional fuel tanks for total 153 [litre] fuel : 943 [km]
useful load with action-radius 250km : 53 [kg]
production : 7.08 [tonkm/hour]
oil and fuel consumption per tonkm : 3.17 [kg]
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Literature :
Praktisch handboek vliegtuigen deel 1 page 172
Gevechtsvliegtuigen 14-18 deel 1 page 14,15
Fighters 1914-19 page 58,
Jane’s fighting aircraft WOI page 61
The friendless sky page 60
Warplanes WOI page 26,37,45,85
De oorlog in de lucht en de ruimte deel 1 page 54
Historische vliegtuigen page 87
last check python :
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 04 January 2019 contact : info.aircraftinvestigation@gmail.com python 3.4.1
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